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Wu KY, Mina M, Carbonneau M, Marchand M, Tran SD. Advancements in Wearable and Implantable Intraocular Pressure Biosensors for Ophthalmology: A Comprehensive Review. Micromachines (Basel) 2023; 14:1915. [PMID: 37893352 PMCID: PMC10609220 DOI: 10.3390/mi14101915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023]
Abstract
Glaucoma, marked by its intricate association with intraocular pressure (IOP), stands as a predominant cause of non-reversible vision loss. In this review, the physiological relevance of IOP is detailed, alongside its potential pathological consequences. The review further delves into innovative engineering solutions for IOP monitoring, highlighting the latest advancements in wearable and implantable sensors and their potential in enhancing glaucoma management. These technological innovations are interwoven with clinical practice, underscoring their real-world applications, patient-centered strategies, and the prospects for future development in IOP control. By synthesizing theoretical concepts, technological innovations, and practical clinical insights, this review contributes a cohesive and comprehensive perspective on the IOP biosensor's role in glaucoma, serving as a reference for ophthalmological researchers, clinicians, and professionals.
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Affiliation(s)
- Kevin Y. Wu
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Mina Mina
- Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Marjorie Carbonneau
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Michael Marchand
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Simon D. Tran
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
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Andrieux C, Marchand M, Larroquet L, Veron V, Biasutti S, Morisson M, Coustham V, Panserat S, Houssier M. Optimization of embryonic thermal programming confirms increased liver fattening in mule ducks and changes in lipid metabolism. Front Physiol 2023; 14:1142398. [PMID: 37275234 PMCID: PMC10233139 DOI: 10.3389/fphys.2023.1142398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/02/2023] [Indexed: 06/07/2023] Open
Abstract
Introduction: The embryonic thermal programming (TM) in birds has been shown to impact several physiological parameters such as resistance to thermal stress, muscle growth or immunity. In mule ducks, it has recently been shown that TM can induce metabolic programming resulting in increased liver weight and fat storage after overfeeding. However, a decrease in hatchability and foie gras quality was also observed, suggesting that this technique needs to be optimized. Here, we tested a new thermal manipulation condition determined with the objective of avoiding negative impacts while maintaining or improving liver properties. Methods: The eggs of the control group were incubated at 37.6°C during the whole incubation period while those of the experimental group (TM group) were incubated at 39.3°C 16 h/24 h from the 11th day of incubation to the 21st. After hatching, all the animals were fed and raised under the same conditions until the age of 12 weeks. At this stage, one part of the animals was overfed and then slaughtered 2 h (to measure rapid changes in metabolism) or 10 h after the last meal (to obtain the best technological yields), while the other part was ration-fed and slaughtered 2 h after the last meal, at the same age. Results: An 8% increase in foie gras production was measured in the TM group compared to the control group without altering the quality of the final product (nor hatchability), confirming the successful optimization of the metabolic programming. Interestingly, these results allowed us not to reject the previously suggested hypothesis of a potential delay in metabolic processes involved in liver fattening in programmed animals, in particular by measuring a trend reversal regarding the amount of total hepatic lipids in both groups at 2 h and then 10 h after the last meal. Discussion: This study therefore validates the optimization of metabolic programming by embryonic thermal manipulation for duck liver fattening. The understanding of the mechanisms of embryonic thermal programming in birds remains today very incomplete and the search for epigenetic marks (main hypothesis of the concept of programming) at the origin of the observed phenotypes could be the next step of this work.
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Affiliation(s)
- C. Andrieux
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - M. Marchand
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - L. Larroquet
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - V. Veron
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - S. Biasutti
- Univ Pau and Pays Adour, E2S UPPA, IUT Génie Biologique, Mont de Marsan, France
| | - M. Morisson
- GenPhySE, Université de Toulouse, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), ENVT (Ecole Nationale Vétérinaire de Toulouse), Castanet Tolosan, France
| | - V. Coustham
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - S. Panserat
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
| | - M. Houssier
- Univ Pau and Pays Adour, E2S UPPA, INRAE (Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement), NUMEA (Nutrition Métabolisme et Aquaculture), Mont de Marsan, France
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Wu KY, Ashkar S, Jain S, Marchand M, Tran SD. Breaking Barriers in Eye Treatment: Polymeric Nano-Based Drug-Delivery System for Anterior Segment Diseases and Glaucoma. Polymers (Basel) 2023; 15:polym15061373. [PMID: 36987154 PMCID: PMC10054733 DOI: 10.3390/polym15061373] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/25/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
The eye has anatomical structures that function as robust static and dynamic barriers, limiting the penetration, residence time, and bioavailability of medications administered topically. The development of polymeric nano-based drug-delivery systems (DDS) could be the solution to these challenges: it can pass through ocular barriers, offering higher bioavailability of administered drugs to targeted tissues that are otherwise inaccessible; it can stay in ocular tissues for longer periods of time, requiring fewer drug administrations; and it can be made up of polymers that are biodegradable and nano-sized, minimizing the undesirable effects of the administered molecules. Therefore, therapeutic innovations in polymeric nano-based DDS have been widely explored for ophthalmic drug-delivery applications. In this review, we will give a comprehensive overview of polymeric nano-based drug-delivery systems (DDS) used in the treatment of ocular diseases. We will then examine the current therapeutic challenges of various ocular diseases and analyze how different types of biopolymers can potentially enhance our therapeutic options. A literature review of the preclinical and clinical studies published between 2017 and 2022 was conducted. Thanks to the advances in polymer science, the ocular DDS has rapidly evolved, showing great promise to help clinicians better manage patients.
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Affiliation(s)
- Kevin Y. Wu
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Said Ashkar
- Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Shrieda Jain
- Department of Experimental Surgery, McGill University, Montreal, QC H3G 1A4, Canada
| | - Michael Marchand
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Simon D. Tran
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
- Correspondence:
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Geoffrion D, Hassanaly SI, Marchand M, Daoud R, Agoumi Y, Harissi-Dagher M. Assessment of the Role and Timing of Glaucoma Surgery in Boston Keratoprosthesis Type 1 Patients. Am J Ophthalmol 2022; 235:249-257. [PMID: 34543660 DOI: 10.1016/j.ajo.2021.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE To determine the role and optimal timing of glaucoma surgery in relation to Boston keratoprosthesis type 1 (KPro) implantation. DESIGN Retrospective, comparative, nonrandomized clinical study. METHODS Single-center study of a total of 100 eyes (100 patients) implanted with a KPro between 2008 and 2017, and diagnosed with glaucoma before or after KPro. Patients were separated into 2 groups: those with preexisting glaucoma and those who developed de novo glaucoma after KPro. Groups were then divided based on whether patients were medically or surgically managed. Glaucoma surgery included glaucoma drainage device (GDD) implantation, trabeculectomy, and cyclophotocoagulation (CPC). Primary outcomes included best-corrected visual acuity (BCVA), glaucoma progression, and complications. Differences in outcomes were compared using parametric and nonparametric tests, as well as log-rank test to compare time-to-outcome events. RESULTS Among 72 eyes with preexisting glaucoma, 27 (38%) had glaucoma surgery before KPro (18 GDD), whereas 45 (62%) were medically managed only. Among the latter, 19 (42%) needed glaucoma surgery post-KPro (16 GDD). Among 28 eyes with de novo glaucoma, 12 (43%) had glaucoma surgery post-KPro (9 GDD). For eyes with preexisting glaucoma, glaucoma progression was greater with glaucoma surgery performed post-KPro (100%) compared with pre-KPro (74%, P = .016) and to medical management (54%, P = .002). No increase in complications were observed with glaucoma surgery compared to medications only (P > .05), whereas fewer eyes maintained a BCVA of 20/200 or better over time with medical management (P = .013). Eyes with de novo glaucoma had similar progression, BCVA, and complications between medical and surgical care (P > .05). CONCLUSIONS Glaucoma surgery should be performed before or at the same time as KPro implantation in eyes with preexisting glaucoma. Complication rates are not increased when glaucoma surgery is performed in KPro eyes with either preexisting or de novo glaucoma. To ensure optimal glaucoma control, glaucoma surgery should be performed as early as possible in KPro eyes with good visual potential.
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Affiliation(s)
- Dominique Geoffrion
- From the Department of Ophthalmology, Centre hospitalier de l'Université de Montréal (CHUM) (D.G., S.I.H., M.M., R.D., Y.A., M.H.-D.), Montreal, Quebec, Canada; Department of Experimental Surgery, Faculty of Medicine, McGill University (D.G.), Montreal, Quebec, Canada
| | - Salima I Hassanaly
- Department of Ophthalmology & Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago (S.I.H.), Chicago, Illinois, USA
| | - Michael Marchand
- From the Department of Ophthalmology, Centre hospitalier de l'Université de Montréal (CHUM) (D.G., S.I.H., M.M., R.D., Y.A., M.H.-D.), Montreal, Quebec, Canada
| | - Roy Daoud
- From the Department of Ophthalmology, Centre hospitalier de l'Université de Montréal (CHUM) (D.G., S.I.H., M.M., R.D., Y.A., M.H.-D.), Montreal, Quebec, Canada
| | - Younes Agoumi
- From the Department of Ophthalmology, Centre hospitalier de l'Université de Montréal (CHUM) (D.G., S.I.H., M.M., R.D., Y.A., M.H.-D.), Montreal, Quebec, Canada
| | - Mona Harissi-Dagher
- From the Department of Ophthalmology, Centre hospitalier de l'Université de Montréal (CHUM) (D.G., S.I.H., M.M., R.D., Y.A., M.H.-D.), Montreal, Quebec, Canada.
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Roberts HP, Jones MT, Willey LL, Akre TS, Sievert PR, deMaynadier P, Gipe KD, Johnson G, Kleopfer J, Marchand M, Megyesy J, Parren S, Thompson E, Urban C, Yorks D, Zarate B, Erb L, Ross AM, Dragon J, Johnson L, Lassiter E, Lassiter E. Large-scale collaboration reveals landscape-level effects of land-use on turtle demography. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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6
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Marchand M, El-Khoury J, Harissi-Dagher M, Robert MC. Outcomes of First Cases of Descemet Membrane Endothelial Keratoplasty (DMEK) at a Canadian University Hospital Centre. Can J Ophthalmol 2021; 57:214-215. [PMID: 34119465 DOI: 10.1016/j.jcjo.2021.05.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 04/07/2021] [Accepted: 05/13/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Michael Marchand
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal, Montreal, Que
| | - Jonathan El-Khoury
- Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, Que
| | - Mona Harissi-Dagher
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal, Montreal, Que
| | - Marie-Claude Robert
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal, Montreal, Que..
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Favalier N, Véron V, Marchand M, Surget A, Maunas P, Turonnet N, Panserat S, Marandel L. Short-Term Effect of a Low-Protein High-Carbohydrate Diet on Mature Female and Male, and Neomale Rainbow Trout. Int J Mol Sci 2021; 22:ijms22116149. [PMID: 34200395 PMCID: PMC8201289 DOI: 10.3390/ijms22116149] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 12/30/2022] Open
Abstract
Rainbow trout are considered as a poor user of dietary carbohydrates, displaying persistent postprandial hyperglycaemia when fed a diet containing high amounts of carbohydrates. While this phenotype is well-described in juveniles, less attention was given to broodstock. Our objective was to assess for the first time the short-term consequences of feeding mature female and male, and neomale trout with a low-protein high-carbohydrate diet on glucose and lipid metabolism. Fish were fed for two days with a diet containing either no or 32% of carbohydrates. We analysed plasma metabolites, mRNA levels and enzymatic activities of glycolysis, gluconeogenesis, de novo lipogenesis and β-oxidation in the liver. Results demonstrated that the glucose and lipid metabolism were regulated by the nutritional status in all sexes, irrespective of the carbohydrate intake. These data point out that carbohydrate intake during a short period (5 meals) at 8 °C did not induce specific metabolic changes in broodstock. Finally, we demonstrated, for the first time, sex differences regarding the consequences of two days of feeding on glucose and lipid metabolism.
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Scheen AJ, Marchand M, Philips JC. [Crossed eyes on arterial blood pressure in sitting position]. Rev Med Liege 2021; 76:221-223. [PMID: 33830683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Prolonged standing or even sitting position can induce a fall in arterial blood pressure because of gravity that provokes a blood volume sequestration in lower limbs. Such a phenomenon may be associated with orthostatic dizziness or sometimes syncope. We present the image of a continuous monitoring using a Finometer® of systolic blood pressure and heart rate. Crossing legs while in sitting position allows immediate increase of arterial blood pressure. This pathophysiological mechanism explains why numerous people cross legs in sitting position, for instance during a prolonged meeting, in an auditorium or in a movie theater. This common phenomenon has potential diagnostic, therapeutic and prognostic implications.
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Affiliation(s)
- A J Scheen
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
| | - M Marchand
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
| | - J C Philips
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
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El-Khazen Dupuis J, Marchand M, Javidi S, Nguyen TQT. Enophthalmos as the Initial Systemic Finding of Undiagnosed Metastatic Breast Carcinoma. Int Med Case Rep J 2021; 14:25-31. [PMID: 33536796 PMCID: PMC7850410 DOI: 10.2147/imcrj.s282113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/09/2020] [Accepted: 01/05/2021] [Indexed: 12/30/2022] Open
Abstract
Purpose To report on the importance of detecting and investigating non-traumatic enophthalmos, which occurred as the first presenting sign of an undiagnosed metastatic breast carcinoma in two patients with no prior history of neoplasia. Design Case series. Observations The first case consists of a 74-year-old woman with no significant past medical history, who presented with a non-traumatic enophthalmos and ptosis of her left eye, and horizontal diplopia on right-gaze. Imaging revealed an intraconal lesion of her left orbit, with orbital fat atrophy. Transcutaneous anterior orbitotomy was performed for tumor biopsy, and the histopathology study concluded on a diagnosis of orbital metastasis consistent with infiltrative breast carcinoma. Thorough breast imaging and multiple breast biopsies were not able to localize the primary tumor. The second case consists of a 76-year-old woman, with no prior relevant medical history, who presented for progressive enophthalmos and ptosis of her right eye. Imaging revealed an osteolytic lesion of her right frontal bone, and multiple infiltrative lesions implicating both orbits. A biopsy was performed through a transcutaneous anterior orbitotomy and histopathology study lead to a diagnosis of metastatic lobular breast carcinoma. The primary breast tumor was localized using positron emission tomography, and further biopsy confirmed the diagnosis. Conclusion Although uncommon, non-traumatic enophthalmos has a broad differential diagnosis. In some rare instances, it may be the initial presentation of orbital metastases in patients with no prior history of cancer, and in the absence of other systemic symptoms. Clinicians must be thorough when assessing and investigating this clinical entity. A comprehensive eye exam, systemic evaluation, orbit imaging, biopsy and immunohistochemistry analysis are essential to promptly diagnose orbital metastases and plan the appropriate treatment.
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Affiliation(s)
- Jessica El-Khazen Dupuis
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC H2X 3E4, Canada
| | - Michael Marchand
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC H2X 3E4, Canada
| | - Simon Javidi
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC H2X 3E4, Canada
| | - Tuan Quynh Tram Nguyen
- Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC H2X 3E4, Canada
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El-Khoury J, Marchand M, Allaire G, Robert MC. Conjunctival stromal tumour: case report and review of the literature. Can J Ophthalmol 2020; 55:e174-e175. [PMID: 32446503 DOI: 10.1016/j.jcjo.2020.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/14/2020] [Indexed: 12/18/2022]
Affiliation(s)
| | | | - Guy Allaire
- Centre Hospitalier de l'Université de Montréal, Montreal, Que
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Marandel L, Plagnes-Juan E, Marchand M, Callet T, Dias K, Terrier F, Père S, Vernier L, Panserat S, Rétaux S. Nutritional regulation of glucose metabolism-related genes in the emerging teleost model Mexican tetra surface fish: a first exploration. R Soc Open Sci 2020; 7:191853. [PMID: 32257342 PMCID: PMC7062055 DOI: 10.1098/rsos.191853] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/30/2020] [Indexed: 06/11/2023]
Abstract
Astyanax mexicanus has gained importance as a laboratory model organism for evolutionary biology. However, little is known about its intermediary metabolism, and feeding regimes remain variable between laboratories holding this species. We thus aimed to evaluate the intermediary metabolism response to nutritional status and to low (NC) or high (HC) carbohydrate diets in various organs of the surface-dwelling form of the species. As expected, glycaemia increased after feeding. Fish fed the HC diet had higher glycaemia than fish fed the NC diet, but without displaying hyperglycaemia, suggesting that carbohydrates are efficiently used as an energy source. At molecular level, only fasn (Fatty Acid Synthase) transcripts increased in tissues after refeeding, suggesting an activation of lipogenesis. On the other hand, we monitored only moderate changes in glucose-related transcripts. Most changes observed were related to the nutritional status, but not to the NC versus HC diet. Such a metabolic pattern is suggestive of an omnivorous-related metabolism, and this species, at least at adult stage, may adapt to a fish meal-substituted diet with high carbohydrate content and low protein supply. Investigation to identify molecular actors explaining the efficient use of such a diet should be pursued to deepen our knowledge on this species.
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Affiliation(s)
- Lucie Marandel
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Elisabeth Plagnes-Juan
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Michael Marchand
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Therese Callet
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Karine Dias
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Frederic Terrier
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Stéphane Père
- Paris-Saclay Institute of Neuroscience, CNRS UMR9197, Université Paris-Saclay, Avenue de la terrasse, Gif-sur-Yvette, France
| | - Louise Vernier
- Paris-Saclay Institute of Neuroscience, CNRS UMR9197, Université Paris-Saclay, Avenue de la terrasse, Gif-sur-Yvette, France
| | - Stephane Panserat
- INRAE, Université de Pau & Pays de l'Adour, E2S UPPA, UMR1419 Nutrition Metabolism and Aquaculture, Aquapôle, 64310 Saint-Pée-sur-Nivelle, France
| | - Sylvie Rétaux
- Paris-Saclay Institute of Neuroscience, CNRS UMR9197, Université Paris-Saclay, Avenue de la terrasse, Gif-sur-Yvette, France
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Mehdizadeh A, Alavi A, Piguet V, Sibbald G, Vernich L, Marchand M, Rosella L, Hu H, Laporte A, Bashash M. Surgically resected hidradenitis suppurativa: a population-based cost analysis. Br J Dermatol 2019; 182:1300-1301. [PMID: 31774145 DOI: 10.1111/bjd.18738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- A Mehdizadeh
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - A Alavi
- Division of Dermatology, Women's College Hospital, Toronto, ON, Canada
| | - V Piguet
- Division of Dermatology, Women's College Hospital, Toronto, ON, Canada.,Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - G Sibbald
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,Division of Dermatology, Women's College Hospital, Toronto, ON, Canada
| | - L Vernich
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - M Marchand
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - L Rosella
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - H Hu
- School of Public Health, University of Washington, Seattle, WA, U.S.A
| | - A Laporte
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada.,Canadian Centre for Health Economics, Toronto, ON, Canada
| | - M Bashash
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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Marchand M, Harissi-Dagher M. Recurrent preseptal cellulitis in Boston keratoprosthesis type II implantation for ocular Stevens-Johnson syndrome. Can J Ophthalmol 2019; 55:e59-e61. [PMID: 31712017 DOI: 10.1016/j.jcjo.2019.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/01/2019] [Accepted: 07/21/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Marchand
- Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, Que..
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Marchand M, Harissi-Dagher M, Germain M, Thompson P, Robert MC. Serum drops for ocular surface disease: national survey of Canadian cornea specialists. Can J Ophthalmol 2018; 53:266-271. [DOI: 10.1016/j.jcjo.2017.09.007] [Citation(s) in RCA: 5] [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] [Received: 03/04/2017] [Revised: 08/04/2017] [Accepted: 09/05/2017] [Indexed: 10/18/2022]
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15
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Stroh M, Winter H, Marchand M, Claret L, Eppler S, Ruppel J, Abidoye O, Teng SL, Lin WT, Dayog S, Bruno R, Jin J, Girish S. Clinical Pharmacokinetics and Pharmacodynamics of Atezolizumab in Metastatic Urothelial Carcinoma. Clin Pharmacol Ther 2017; 102:305-312. [PMID: 27981577 DOI: 10.1002/cpt.587] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/18/2016] [Accepted: 11/18/2016] [Indexed: 12/14/2022]
Abstract
Atezolizumab, a humanized immunoglobulin G1 (IgG1) monoclonal antibody targeting human programmed death-ligand 1 (PD-L1), is US Food and Drug Administration (FDA) approved in metastatic urothelial carcinoma (MUC) and is being investigated in various malignancies. This analysis based upon 906 patients from two phase I and one phase II MUC studies, is the first report of the clinical pharmacokinetics (PK) and pharmacodynamics (PD) of atezolizumab. Atezolizumab exhibited linear PK over a dose range of 1-20 mg/kg, including the labeled 1,200 mg dose. The clearance, volume of distribution, and terminal half-life estimates from population pharmacokinetic (PopPK) analysis of 0.200 L/day, 6.91 L, and 27 days, respectively, were as expected for an IgG1. Exposure-response analyses did not identify statistically significant relationships with either objective response rate or adverse events of grades 3-5 or of special interest. None of the statistically significant covariates from PopPK (body weight, gender, antitherapeutic antibody, albumin, and tumor burden) would require dose adjustment.
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Affiliation(s)
- M Stroh
- Genentech, South San Francisco, California, USA
| | - H Winter
- Genentech, South San Francisco, California, USA
| | - M Marchand
- Pharsight Consulting Services, Marseille, France
| | - L Claret
- Pharsight Consulting Services, Marseille, France
| | - S Eppler
- Genentech, South San Francisco, California, USA
| | - J Ruppel
- Genentech, South San Francisco, California, USA
| | - O Abidoye
- Genentech, South San Francisco, California, USA
| | - S L Teng
- Genentech, South San Francisco, California, USA
| | - W T Lin
- Genentech, South San Francisco, California, USA
| | - S Dayog
- Genentech, South San Francisco, California, USA
| | - R Bruno
- Pharsight Consulting Services, Marseille, France
| | - J Jin
- Genentech, South San Francisco, California, USA
| | - S Girish
- Genentech, South San Francisco, California, USA
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Marchand M, Umana C, Pichol-Thievend C, Salza R, Ricard-Blum S, Monnot C, Guilluy C, Muller L, Germain S. Lysyl oxidase like-2 (LOXL2) regulates endothelial mechanotransduction and 3D vascular morphogenesis through scaffolding of basement membrane. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30407-x] [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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Zahalsky M, Dessources G, Marchand M, Valenzuela R, Blick S, Carrion R. 120 A Multi-Institutional Retrospective Study on Safety, Usage, and Quantity of ProFlo, an Amniotic Fluid Injectable, used in the treatment of Erectile Dysfunction and Peyronie’s Disease. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.107] [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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Zahalsky G, Marchand M, Cassini W, Spindell G, Zahalsky M. 168 The Treatment of Erectile Dysfunction in Men post Radical Prostatectomy with Amniotic Fluid injection. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.156] [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: 11/28/2022]
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Cyrus A, Marchand M, Estrade L, Massip P, Cestac P, Pomies S, Jouglen J, Juillard-Condat B. PS-055 Setting the computerised physician order entry system: Between security and new risks of errors. Eur J Hosp Pharm 2016. [DOI: 10.1136/ejhpharm-2016-000875.539] [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] Open
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20
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Cyrus A, Marchand M, Estrade L, Massip P, Cestac P, Pomies S, Jouglen J, Juillard-Condat B. PS-061 Computerised physician order entry: New risks identified by hospital pharmacists. Eur J Hosp Pharm 2016. [DOI: 10.1136/ejhpharm-2016-000875.545] [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] Open
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21
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Marchand M. La place des médicaments biologiques similaires des érythropoïétines sur le marché en France et en Midi-Pyrénées. Rev Epidemiol Sante Publique 2015. [DOI: 10.1016/j.respe.2015.02.014] [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: 11/30/2022] Open
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22
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Olen SII, Machet MP, Marchand M. Images of grandparents in English South African children'spicture books. South African Journal of Libraries and Information Science 2014. [DOI: 10.7553/66-2-1446] [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: 10/24/2022] Open
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23
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Toesca R, Guyon V, Marchand M, Bessereau J, Abbona F, Amérigo K, Beaurain F, Brun PM, Chaume I, Cochet L, Costa M, Cremniter D, De Olivera A, Desplantes A, Duval S, Fallot JL, Garcia M, Garry P, Gourdon X, Martignoni S, Meyran D, Michelet P, Nahmias V, N'Guyen C, Nguyen J, Perrion F, Petaroscia C, Pinzelli P, Puget A, Pugliarese S, Richard E, Rougier S, Roy N, Zekri D, Topin F, Auffray JP, Samuelian JC. Early psychological care of the French victims of the Costa Concordia shipwreck. Int Marit Health 2013; 64:2-6. [PMID: 23788158] [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] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 05/08/2013] [Indexed: 06/02/2023] Open
Abstract
Most of the French passengers who survived the shipwreck of the cruise ship Costa Concordia were repatriatedfrom Italy to Marseille, one of the stopovers of the cruise. The shipwreck happened during the nightof 13th-14th January 2012 and entailed the forced evacuation of 4195 passengers and crewmembers.Thirty-two persons died and 2 others are still reported missing. The massive and unexpected inflow of402 French citizens in the port of Marseille required the quick setting up of welcome facilities, not only tosolve logistical problems, but also to address psychological and sometimes even medical problems. ThePrehospital Psychological Emergency Service (CUMP) and the Prehospital Emergency Medical Service(SAMU) of Marseille examined 196 persons in total, and were able to avoid a great number of emergencyadmissions deemed necessary because of difficult psychological situations (death, missing or lost persons,acute stress). The objective of this report is to rapidly present the emergency committee as a whole andto describe in more detail the work that the CUMP accomplished during the 36 hours necessary to takecharge of the majority of the French passengers of the Costa Concordia.
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Affiliation(s)
- R Toesca
- SAMU 13, Pôle RUSH, CHU La Timone, Marseille, France
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Luce S, De Breucker S, Van Gossum A, Demols A, Mekinda Z, Ena G, Kentos A, Roumeguère T, Ghanooni R, Nouwynck C, Van Laethem JL, Sokolow Y, Simon P, Bailly B, Vervaet C, Marchand M, Pepersack T. How to identify older patients with cancer who should benefit from comprehensive geriatric assessment? J Geriatr Oncol 2012. [DOI: 10.1016/j.jgo.2012.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Luce⁎ S, De Breucker S, Van Gossum A, Demols A, Mekinda Z, Ena G, Maerevoet M, Bailly B, Roumeguère T, Ghanooni R, Nouwynck C, Van Laethem J, Sokolow Y, Simon P, Bron D, Vervaet C, Marchand M, Pepersack T. How to identify older cancer patients who should benefit from comprehensive geriatric assessment? J Geriatr Oncol 2012. [DOI: 10.1016/j.jgo.2012.10.084] [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: 11/16/2022]
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Roger-Leroi V, Mishellany-Dutour A, Woda A, Marchand M, Peyron MA. Substantiation of an artificial saliva formulated for use in a masticatory apparatus. Odontostomatol Trop 2012; 35:5-14. [PMID: 22988786] [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: 06/01/2023]
Abstract
The aim of this work was to substantiate artificial saliva prepared for use in a masticator apparatus. Mastication's goal is to produce a viscous and plastic food bolus where these properties authorize a safe swallow. Apart from its biochemical contribution, saliva is mainly used in this kind of apparatus to provide a viscous component to the bolus. Artificial saliva was prepared with water and minerals, and completed with mucin and amylase. Different physico-chemical conditions were applied and the resultant viscosity was compared to that of human saliva. Mechanically- or chemically-stimulated salivas of ten healthy subjects were collected. Viscosity was measured with a capillary viscometer in response to changes in measurement's temperature, air exposure or pH. The effects of circadian saliva collection and the stimulation type on viscosity of human saliva were also studied. Viscosity of artificial and human salivas was comparable. An increase in the measurement's temperature or a 30 min-exposure of saliva to air led to a significant decrease in viscosity of both types of saliva. Amylase in artificial saliva did not change viscosity. The viscosity of human saliva displayed important subject variability as well as a dependence on the stimulation type of saliva production. This work allowed a useful evaluation of the formulated artificial saliva. It exhibited similar viscosity as the natural saliva in response to different methodological conditions. Therefore the proposed artificial saliva satisfies the major requirement of viscosity for a use in the masticator apparatus designed to prepare a food bolus.
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Affiliation(s)
- V Roger-Leroi
- lermont Université, Univ. d'Auvergne, EA 3847, Déficiences Incapacités et Désavantages en Santé Orale, Clermont-Ferrand, France
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Philips JC, Marchand M, Scheen A. Haemodynamic changes during a squat test, pulsatile stress and indices of cardiovascular autonomic neuropathy in patients with long-duration type 1 diabetes. Diabetes & Metabolism 2012; 38:54-62. [DOI: 10.1016/j.diabet.2011.07.007] [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] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 07/26/2011] [Accepted: 07/26/2011] [Indexed: 11/30/2022]
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Shah M, Marchand M, Corbeil J. Feature Selection with Conjunctions of Decision Stumps and Learning from Microarray Data. IEEE Trans Pattern Anal Mach Intell 2012; 34:174-186. [PMID: 21576745 DOI: 10.1109/tpami.2011.82] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
One of the objectives of designing feature selection learning algorithms is to obtain classifiers that depend on a small number of attributes and have verifiable future performance guarantees. There are few, if any, approaches that successfully address the two goals simultaneously. To the best of our knowledge, such algorithms that give theoretical bounds on the future performance have not been proposed so far in the context of the classification of gene expression data. In this work, we investigate the premise of learning a conjunction (or disjunction) of decision stumps in Occam's Razor, Sample Compression, and PAC-Bayes learning settings for identifying a small subset of attributes that can be used to perform reliable classification tasks. We apply the proposed approaches for gene identification from DNA microarray data and compare our results to those of the well-known successful approaches proposed for the task. We show that our algorithm not only finds hypotheses with a much smaller number of genes while giving competitive classification accuracy but also having tight risk guarantees on future performance, unlike other approaches. The proposed approaches are general and extensible in terms of both designing novel algorithms and application to other domains.
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Strahan SE, Douglass AR, Stolarski RS, Akiyoshi H, Bekki S, Braesicke P, Butchart N, Chipperfield MP, Cugnet D, Dhomse S, Frith SM, Gettelman A, Hardiman SC, Kinnison DE, Lamarque JF, Mancini E, Marchand M, Michou M, Morgenstern O, Nakamura T, Olivié D, Pawson S, Pitari G, Plummer DA, Pyle JA, Scinocca JF, Shepherd TG, Shibata K, Smale D, Teyssèdre H, Tian W, Yamashita Y. Using transport diagnostics to understand chemistry climate model ozone simulations. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010jd015360] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Butchart N, Charlton-Perez AJ, Cionni I, Hardiman SC, Haynes PH, Krüger K, Kushner PJ, Newman PA, Osprey SM, Perlwitz J, Sigmond M, Wang L, Akiyoshi H, Austin J, Bekki S, Baumgaertner A, Braesicke P, Brühl C, Chipperfield M, Dameris M, Dhomse S, Eyring V, Garcia R, Garny H, Jöckel P, Lamarque JF, Marchand M, Michou M, Morgenstern O, Nakamura T, Pawson S, Plummer D, Pyle J, Rozanov E, Scinocca J, Shepherd TG, Shibata K, Smale D, Teyssèdre H, Tian W, Waugh D, Yamashita Y. Multimodel climate and variability of the stratosphere. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010jd014995] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Oman LD, Plummer DA, Waugh DW, Austin J, Scinocca JF, Douglass AR, Salawitch RJ, Canty T, Akiyoshi H, Bekki S, Braesicke P, Butchart N, Chipperfield MP, Cugnet D, Dhomse S, Eyring V, Frith S, Hardiman SC, Kinnison DE, Lamarque JF, Mancini E, Marchand M, Michou M, Morgenstern O, Nakamura T, Nielsen JE, Olivié D, Pitari G, Pyle J, Rozanov E, Shepherd TG, Shibata K, Stolarski RS, Teyssèdre H, Tian W, Yamashita Y, Ziemke JR. Multimodel assessment of the factors driving stratospheric ozone evolution over the 21st century. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jd014362] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- L. D. Oman
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Department of Earth and Planetary Sciences; Johns Hopkins University; Baltimore Maryland USA
| | - D. A. Plummer
- Canadian Centre for Climate Modelling and Analysis; Victoria, British Columbia Canada
| | - D. W. Waugh
- Department of Earth and Planetary Sciences; Johns Hopkins University; Baltimore Maryland USA
| | - J. Austin
- NOAA Geophysical Fluid Dynamics Laboratory; Princeton New Jersey USA
| | - J. F. Scinocca
- Canadian Centre for Climate Modelling and Analysis; Victoria, British Columbia Canada
| | - A. R. Douglass
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - R. J. Salawitch
- Department of Chemistry and Biochemistry; University of Maryland; College Park Maryland USA
| | - T. Canty
- Department of Chemistry and Biochemistry; University of Maryland; College Park Maryland USA
| | - H. Akiyoshi
- National Institute for Environmental Studies; Tsukuba Japan
| | | | - P. Braesicke
- NCAS-Climate-Chemistry, Centre for Atmospheric Science, Department of Chemistry; University of Cambridge; Cambridge UK
| | | | | | | | - S. Dhomse
- School of Earth and Environment; University of Leeds; Leeds UK
| | - V. Eyring
- Deutsches Zentrum für Luft- und Raumfahrt; Institut für Physik der Atmosphäre; Oberpfaffenhofen Germany
| | - S. Frith
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Science Systems and Applications, Inc.; Lanham Maryland USA
| | | | | | | | - E. Mancini
- Dipartimento di Fisica; University of L'Aquila; L'Aquila Italy
| | | | - M. Michou
- GAME/CNRM, Météo-France, CNRS; Toulouse France
| | - O. Morgenstern
- National Institute of Water and Atmospheric Research; Lauder New Zealand
| | - T. Nakamura
- National Institute for Environmental Studies; Tsukuba Japan
| | - J. E. Nielsen
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Science Systems and Applications, Inc.; Lanham Maryland USA
| | - D. Olivié
- GAME/CNRM, Météo-France, CNRS; Toulouse France
| | - G. Pitari
- Dipartimento di Fisica; University of L'Aquila; L'Aquila Italy
| | - J. Pyle
- NCAS-Climate-Chemistry, Centre for Atmospheric Science, Department of Chemistry; University of Cambridge; Cambridge UK
| | - E. Rozanov
- Physical-Meteorological Observatory Davos, World Radiation Center; Davos Switzerland
- IAC, ETHZ; Zurich Switzerland
| | - T. G. Shepherd
- Department of Physics; University of Toronto; Toronto, Ontario Canada
| | - K. Shibata
- Meteorological Research Institute; Japan Meteorological Agency; Tsukuba Japan
| | - R. S. Stolarski
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Department of Earth and Planetary Sciences; Johns Hopkins University; Baltimore Maryland USA
| | | | - W. Tian
- School of Earth and Environment; University of Leeds; Leeds UK
| | - Y. Yamashita
- National Institute for Environmental Studies; Tsukuba Japan
| | - J. R. Ziemke
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Goddard Earth Sciences and Technology Center; University of Maryland, Baltimore County; Catonsville Maryland USA
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Affiliation(s)
- W. Lukosz
- a Physikalisches Institut, Technische Hochschule, Braunschweig, Germany
| | - M. Marchand
- a Physikalisches Institut, Technische Hochschule, Braunschweig, Germany
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Austin J, Struthers H, Scinocca J, Plummer DA, Akiyoshi H, Baumgaertner AJG, Bekki S, Bodeker GE, Braesicke P, Brühl C, Butchart N, Chipperfield MP, Cugnet D, Dameris M, Dhomse S, Frith S, Garny H, Gettelman A, Hardiman SC, Jöckel P, Kinnison D, Kubin A, Lamarque JF, Langematz U, Mancini E, Marchand M, Michou M, Morgenstern O, Nakamura T, Nielsen JE, Pitari G, Pyle J, Rozanov E, Shepherd TG, Shibata K, Smale D, Teyssèdre H, Yamashita Y. Chemistry-climate model simulations of spring Antarctic ozone. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013577] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Austin J, Scinocca J, Plummer D, Oman L, Waugh D, Akiyoshi H, Bekki S, Braesicke P, Butchart N, Chipperfield M, Cugnet D, Dameris M, Dhomse S, Eyring V, Frith S, Garcia RR, Garny H, Gettelman A, Hardiman SC, Kinnison D, Lamarque JF, Mancini E, Marchand M, Michou M, Morgenstern O, Nakamura T, Pawson S, Pitari G, Pyle J, Rozanov E, Shepherd TG, Shibata K, Teyssèdre H, Wilson RJ, Yamashita Y. Decline and recovery of total column ozone using a multimodel time series analysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jd013857] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gettelman A, Hegglin MI, Son SW, Kim J, Fujiwara M, Birner T, Kremser S, Rex M, Añel JA, Akiyoshi H, Austin J, Bekki S, Braesike P, Brühl C, Butchart N, Chipperfield M, Dameris M, Dhomse S, Garny H, Hardiman SC, Jöckel P, Kinnison DE, Lamarque JF, Mancini E, Marchand M, Michou M, Morgenstern O, Pawson S, Pitari G, Plummer D, Pyle JA, Rozanov E, Scinocca J, Shepherd TG, Shibata K, Smale D, Teyssèdre H, Tian W. Multimodel assessment of the upper troposphere and lower stratosphere: Tropics and global trends. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013638] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Son SW, Gerber EP, Perlwitz J, Polvani LM, Gillett NP, Seo KH, Eyring V, Shepherd TG, Waugh D, Akiyoshi H, Austin J, Baumgaertner A, Bekki S, Braesicke P, Brühl C, Butchart N, Chipperfield MP, Cugnet D, Dameris M, Dhomse S, Frith S, Garny H, Garcia R, Hardiman SC, Jöckel P, Lamarque JF, Mancini E, Marchand M, Michou M, Nakamura T, Morgenstern O, Pitari G, Plummer DA, Pyle J, Rozanov E, Scinocca JF, Shibata K, Smale D, Teyssèdre H, Tian W, Yamashita Y. Impact of stratospheric ozone on Southern Hemisphere circulation change: A multimodel assessment. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010jd014271] [Citation(s) in RCA: 248] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Morgenstern O, Akiyoshi H, Bekki S, Braesicke P, Butchart N, Chipperfield MP, Cugnet D, Deushi M, Dhomse SS, Garcia RR, Gettelman A, Gillett NP, Hardiman SC, Jumelet J, Kinnison DE, Lamarque JF, Lott F, Marchand M, Michou M, Nakamura T, Olivié D, Peter T, Plummer D, Pyle JA, Rozanov E, Saint-Martin D, Scinocca JF, Shibata K, Sigmond M, Smale D, Teyssèdre H, Tian W, Voldoire A, Yamashita Y. Anthropogenic forcing of the Northern Annular Mode in CCMVal-2 models. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013347] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Morgenstern O, Giorgetta MA, Shibata K, Eyring V, Waugh DW, Shepherd TG, Akiyoshi H, Austin J, Baumgaertner AJG, Bekki S, Braesicke P, Brühl C, Chipperfield MP, Cugnet D, Dameris M, Dhomse S, Frith SM, Garny H, Gettelman A, Hardiman SC, Hegglin MI, Jöckel P, Kinnison DE, Lamarque JF, Mancini E, Manzini E, Marchand M, Michou M, Nakamura T, Nielsen JE, Olivié D, Pitari G, Plummer DA, Rozanov E, Scinocca JF, Smale D, Teyssèdre H, Toohey M, Tian W, Yamashita Y. Review of the formulation of present-generation stratospheric chemistry-climate models and associated external forcings. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013728] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
AIMS We assessed changes in pulse pressure and heart rate during a squatting test, as indirect markers of arterial stiffness and cardiovascular autonomic neuropathy, respectively, according to age and sex in patients with Type 1 diabetes mellitus. METHODS We evaluated 160 diabetic patients, divided into four groups of 20 men and 20 women according to age (G1, 20-30 years old; G2, 31-40 years old; G3, 41-50 years old; and G4, 51-60 years old), and 160 non-diabetic matched control subjects. Each subject underwent a 3 min posture test (standing-squatting-standing) with continuous measurement of arterial blood pressure and heart rate by a Finapres device. Overall values throughout the test, baseline levels in initial standing position and squatting-induced changes in pulse pressure, heart rate and the pulse pressure x heart rate product were compared between diabetic patients and healthy control subjects. RESULTS In the standing position, a greater increase in pulse pressure and lower reduction in heart rate with age led to a significantly higher pulse pressure x heart rate product in diabetic patients compared with control subjects. In the squatting position, a more marked pulse pressure increase in the absence of appropriate reduction in heart rate resulted in a greater rise in the pulse pressure x heart rate product in diabetic patients than in healthy subjects. No major differences were noted between the sexes, with the exception of a stronger relationship between pulse pressure and age in the female population with diabetes. Squatting-derived indices of cardiovascular autonomic neuropathy were also noted with increasing age in diabetic patients. CONCLUSIONS The marked increase in the pulse pressure x heart rate product ('pulsatile stress') according to age, combined with cardiovascular autonomic neuropathy, may contribute to the higher cardiovascular risk of patients with Type 1 diabetes.
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Affiliation(s)
- J-C Philips
- Division of Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU Sart Tilman, University of Liège, Liège, Belgium
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Balasubramanian M, Shield JPH, Acerini CL, Walker J, Ellard S, Marchand M, Polak M, Vaxillaire M, Crolla JA, Bunyan DJ, Mackay DJG, Temple IK. Pancreatic hypoplasia presenting with neonatal diabetes mellitus in association with congenital heart defect and developmental delay. Am J Med Genet A 2010; 152A:340-6. [PMID: 20082465 DOI: 10.1002/ajmg.a.33194] [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: 12/25/2022]
Abstract
Congenital pancreatic hypoplasia is a rare cause of neonatal diabetes. We report on a series of three patients with pancreatic agenesis and congenital heart defects. All had abdominal scan evidence of pancreatic agenesis. In addition, Patient 1 had a ventricular septal defect, patent ductus arteriosus and pulmonary artery stenosis; Patient 2 had a truncus arteriosus and Patient 3 had tetralogy of Fallot. Two of the three patients have developmental delay. All three patients were isolated cases within the family. Investigations included sequencing of GCK, ABCC8, IPF1, NEUROD1, PTF1A, HNF1B, INS, ISL1, NGN3, HHEX, G6PC2, TCF7L2, SOX4, FOXP3 (Patients 1 and 2), GATA4 and KCNJ11 genes (all three patients), but no mutations were found. Genetic investigation to exclude paternal UPD 6, methylation aberrations and duplications of 6q24 was also negative in all three. 22q11 deletion was excluded in all three patients. Array CGH in Patient (1) showed a approximately 250 kb, paternally inherited duplication of chromosome 12q [arr cgh 12q24.33 (B35:CHR12:131808577-132057649++) pat], not found in the other two patients. Permanent neonatal diabetes mellitus due to pancreatic hypoplasia with congenital heart defects has been reported before and may represent a distinct condition. We discuss this rare association and review previously reported literature.
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Affiliation(s)
- M Balasubramanian
- Sheffield Clinical Genetics Service, Sheffield Children's NHS Foundation Trust, Sheffield, UK
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Abstract
BACKGROUND To evaluate changes in pulse pressure (PP) and markers of cardiovascular autonomic neuropathy (CAN) according to duration of type 1 diabetes mellitus (T1DM). METHODS This cross-sectional controlled study evaluated 159 diabetic patients during a 3-min posture test (standing-squatting-standing) with continuous measurement of systolic (SBP), diastolic (DBP) and mean (MBP) blood pressure by a Finapres device. Arterial stiffness was indirectly assessed by PP and the slope of PP as a function of MBP calculated during the whole 3-min test. CAN was assessed by the expiration/inspiration pulse interval ratio (E/I R-R ratio) during deep breathing and by three indices measured during the squatting test. Patients were divided into four groups according to diabetes duration (<10 years, 11-20 years, 21-30 years and > 30 years from group 1 to group 4, respectively) and compared with age-matched non-diabetic subjects. RESULTS PP progressively increased (p < 0.0001) and PP/MBP decreased (p < 0.0005) according to T1DM duration, whereas these parameters remained almost unchanged in age-matched control subjects. E/I ratio (p < 0.0001) and baroreflex gain (p < 0.0005) progressively decreased with T1DM duration. The parasympathetic index (squatting test vagal ratio-SqTv) significantly increased (p < 0.0001), whereas the sympathetic index (squatting test sympathetic ratio-SqTs) only tended to decrease (p = 0.12) according to diabetes duration. No such changes in CAN indices were observed in the non-diabetic population. CONCLUSIONS PP increased according to T1DM duration in an age range where PP remained almost stable in controls, in agreement with accelerated arterial stiffening due to chronic hyperglycaemia. The baroreflex gain decreased and other indices of CAN also deteriorated with diabetes duration, more so indices reflecting parasympathetic rather than sympathetic dysfunction.
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Affiliation(s)
- J C Philips
- Division of Diabetes, Nutrition and Metabolic Disorders, Department of Medicine, CHU Sart Tilman, Liège, Belgium
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Haefele A, Hocke K, Kämpfer N, Keckhut P, Marchand M, Bekki S, Morel B, Egorova T, Rozanov E. Diurnal changes in middle atmospheric H2O and O3: Observations in the Alpine region and climate models. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008jd009892] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chantepie A, Paoli F, Bonnefoy R, Bah G, Marchand M, Toutain A. SFP-P125 – Cardiologie – Anasarque révélant un syndrome Camptodactylie-Arthropathie-Coxa vara-Péricardite. Arch Pediatr 2008. [DOI: 10.1016/s0929-693x(08)72255-3] [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: 11/27/2022]
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Baurain J, Stas M, Neyns B, Schuler G, Velu T, Thielemans K, Van Baren N, Dorval T, Marchand M, Coulie P. Comparing immunogenicities of tumor-specific antigens administered as therapeutic vaccines in metastatic melanoma patients. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.3003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
3003 Background: Therapeutic vaccination of metastatic melanoma patients with detectable disease is followed by some tumor regression in only about 10% of the patients, with no clear difference observed between studies carried out with various tumor-specific antigens and vaccination modalities. For antigenic peptide MAGE-A3168–176, presented by HLA-A1 molecules and administered as peptide alone or recombinant ALVAC poxvirus, anti-vaccine T lymphocyte (CTL) responses have been observed in no progressor patient and in only half of the regressors, suggesting a poor immunogenicity of these vaccines. Methods and Results: We compiled anti-vaccine CTL responses measured in the blood of 202 metastatic melanoma patients vaccinated with various associations of 10 different tumor antigens administered as peptides, alone or with adjuvant, recombinant ALVAC poxvirus, or peptide-pulsed dendritic cells. Blood lymphocytes collected before and after vaccination were all analyzed with the same method involving in vitro restimulation in limiting dilution condition followed by labeling with tetramers for each antigen. A CTL response was deemed to have occurred if the CTL frequency increased by at least 10 times, and if the pre-vaccination frequency was lower than 2 x 10-6 of the CD8 cells. No responses were detected against peptides MAGE- A4230–239 (0/26) and MAGE-C2336–344 (0/22). Some were observed against MAGE-A3168–176 (11/81), MAGE-A1278–286 (2/22), MAGE-A3112–120 (2/55), and MAGE-A10254–262 (2/35). Responses were frequently found against NY-ESO-1157–165 (10/19), GnTVVLPDVFIRC (18/73), gp100209–217 (21/33), or Tyrosinase369–377 (11/59). For the latter four antigens, there was no correlation between the occurrence of CTL responses and that of tumor regressions. Neither did we find a correlation between the CTL responses and the expression of the antigen-encoding genes in pre- vaccination tumor samples. Conclusions: These results suggest that some of the antigenic peptides that are commonly used in melanoma vaccines are more immunogenic than others but do not induce more tumor regressions. Therefore, inducing strong CTL responses against these immunogenic peptides is probably not the most appropriate endpoint of future vaccine trials. No significant financial relationships to disclose.
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Affiliation(s)
- J. Baurain
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - M. Stas
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - B. Neyns
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - G. Schuler
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - T. Velu
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - K. Thielemans
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - N. Van Baren
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - T. Dorval
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - M. Marchand
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
| | - P. Coulie
- Cliniques Universitaires St. Luc, Brussels, Belgium; Katholiek Universiteit van Leuven, Leuven, Belgium; Vrije Universiteit van Brussels, Brussels, Belgium; University of Erlangen, Erlangen, Germany; Universite Libre de Bruxelles, Bruxelles, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Institut Curie, Paris, France; Université Catholique de Louvain, Brussels, Belgium
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Eyring V, Butchart N, Waugh DW, Akiyoshi H, Austin J, Bekki S, Bodeker GE, Boville BA, Brühl C, Chipperfield MP, Cordero E, Dameris M, Deushi M, Fioletov VE, Frith SM, Garcia RR, Gettelman A, Giorgetta MA, Grewe V, Jourdain L, Kinnison DE, Mancini E, Manzini E, Marchand M, Marsh DR, Nagashima T, Newman PA, Nielsen JE, Pawson S, Pitari G, Plummer DA, Rozanov E, Schraner M, Shepherd TG, Shibata K, Stolarski RS, Struthers H, Tian W, Yoshiki M. Assessment of temperature, trace species, and ozone in chemistry-climate model simulations of the recent past. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006jd007327] [Citation(s) in RCA: 385] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Philips JC, Marchand M, Weekers L, Scheen AJ. [Arterial pulse pressure in relation to the duration of type 1 diabetes: a cross-sectional controlled study]. Arch Mal Coeur Vaiss 2006; 99:683-6. [PMID: 17061444] [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: 05/12/2023]
Abstract
Diabetes mellitus and arterial pulse pressure (PP) are two independent cardiovascular risk factors. This cross-sectional study investigated the influence of diabetes duration on PP in type 1 diabetic patients without any cardiovascular disease. PP was measured continuously during 3 minutes (active orthostatic test: 1 min standing--1 min squatting--1 min standing) using a fingertip plethysmograph (Finapres) in 159 type 1 diabetic patients aged 20-60 yrs. They were divided into 4 groups according to diabetes duration: (1) G1 : <10 yrs (n=39); G2: 11-20 yrs (n=45); G3: 21-30 yrs (n=57); and G4: >30 yrs (n=18). In order to separate the effects of age from the effects of diabetes duration, diabetic patients were compared to age- and sex-matched non diabetic controls. PP (expressed in mmHg; mean +/- SD) was higher in men than in women in both diabetic (58 +/- 15 vs. 50 +/- 14; p = 0.001) and non diabetic subjects (55 +/- 14 vs. 47 +/- 12; p = 0.001). Overall PP was higher in diabetic than in non diabetic individuals (54 +/- 15 vs. 50 +/- 13; p = 0.025). PP progressively increased according to diabetes duration: 47 +/- 16 vs. 51 +/- 13 vs. 59 +/- 14 vs. 62 +/- 12, from G1 to G4 respectively; p < 0.0001. Such an increase was not observed in age-matched non diabetic subjects: 50 +/- 11 vs. 52 +/- 12 vs. 49 +/- 14 vs. 52 +/- 18, from G1 to G4, respectively; NS. PP was higher in squatting than in standing position in non diabetic subjects (52 +/- 16 vs. 47 +/- 13; p < 0.0001) and even more in diabetic patients (59 +/- 17 vs. 50 +/- 14; p < 0.0001). Overall, PP difference between diabetic and non diabetic individuals was not significant in standing position (50 +/- 14 vs. 47 +/- 13; NS) although it became highly significant in squatting position (59 +/- 17 vs. 52 +/- 16; p = 0.0005). The squatting-standing difference in PP markedly increased with diabetes duration: 69 +/- 14 during squatting vs. 50 +/- 18 during standing in G4 compared to respectively 50 +/- 17 vs. 44 +/- 15 in G1 diabetic patients. Finally, PP was similar (NS) in diabetic patients with HbA1c < 8% (54 +/- 14) or > or =8% (55 +/- 16), with (57 +/- 17) or without (54 +/- 14) microalbuminuria, treated (56 +/- 14) or not (54 +/- 15) by inhibitors of the renin-angiotensin system. In conclusion, PP progressively increased with the duration of type 1 diabetes, independently of age. Such increase was more marked in squatting than in standing position. The role of such PP rise in the increased cardiovascular risk of patients with type 1 diabetes, although suspected in the recent EURODIAB Prospective Complications Study, deserves further investigation.
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Affiliation(s)
- J C Philips
- Service de diabétologie, nutrition et maladies métaboliques, département de médecine, CHU Sart Tilman, Université de Liège, Belgique.
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Baurain J, Van Baren N, Marchand M, Humblet Y, Machiels J, Coulie PG. Tuning formulation of multipeptide vaccination for melanoma patients at high risk of relapse. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.18014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
18014 Background: Vaccination with MAGE peptides is followed by tumor regression in 10–20% of metastatic melanoma patients with detectable disease, mostly those with only SC or lymph node metastases. Anti-vaccine cytolytic T lymphocyte (CTL) responses have been observed in about 50% of the regressor patients, suggesting that these vaccines were poorly immunogenic. Recent reports have documented convincing CTL responses in patients vaccinated with peptides administered in a water-in-oil emulsion with Montanide, a clinical grade incomplete Freund’s adjuvant. After SC injection, this vaccine stimulates a local inflammation which could help to the recruitment of peptide presenting cells. Considering the absence of an effective treatment to prevent relapses of cutaneous melanoma, we applied this vaccination modality in an adjuvant setting. Methods and Results: We vaccinated 14 HLA-A2 melanoma patients with no evidence of disease but at high risk of relapse, with 4 antigenic peptides (MAGE-3.A2, NA17.A2, Tyrosinase.A2 and gp100.A2) emulsified in Montanide ISA51. Seven patients received 5 vaccinations, every 3 weeks, consisting of 4 injections of 900 μg of one peptide and 1 ml Montanide. Seven other patients received the same vaccines but with 300 μg of each peptide. Toxicity was limited to grade II, at the injection sites. Two thirds of the patients mounted a CTL response to peptide gp100.A2, and 50% to peptide NA17.A2. The lower doses of peptides were as immunogenic as the higher. Conclusions: These encouraging results indicate that this simple vaccination modality is not toxic and clearly immunogenic. We wish to formally assess the role of the immunological adjuvant Montanide in these CTL responses by vaccinating a third group of patients with the same 4 antigenic peptides without Montanide. We will also vaccinate with a mix of the 4 peptides and Montanide all injected at one site, as this will reduce the number of injections and could facilitate immunological helper effects of each peptide on the others. Finally, depending on the immunological results obtained with these two additional cohorts of patients, the best modality will be used in a larger study to evaluate clinical efficacy. No significant financial relationships to disclose.
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Affiliation(s)
- J. Baurain
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
| | - N. Van Baren
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
| | - M. Marchand
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
| | - Y. Humblet
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
| | - J. Machiels
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
| | - P. G. Coulie
- St-Luc University Hospital, Brussels, Belgium; Ludwig Institute for Cancer Research, Brussels, Belgium; Catholic University of Louvain, Brussels, Belgium
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Fitou A, Bergöend E, Gennetay D, Pingaud M, Tahir A, Neville P, Aupart M, Marchand M, Argibay J, Cosnay P, Bozon V. Cardiac 5_HT4 receptor in children: functional and pharmacological characteristics. J Mol Cell Cardiol 2006. [DOI: 10.1016/j.yjmcc.2006.03.209] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bergoënd E, Texier N, Legendre A, Alison D, Sirinelli D, Neville P, Marchand M, Chantepie A. [The role of aortic morphology in the occurrence of hypertension in patients undergoing surgery for coarctation of the aorta before the age of 1 year]. Arch Mal Coeur Vaiss 2006; 99:439-45. [PMID: 16802732] [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: 05/10/2023]
Abstract
OBJECTIVE Hypertension on effort can be observed following surgical treatment of coarctation of the aorta even if the operation has been performed early and has been judged to be satisfactory. The pathophysiology of this hypertension has not been completely elucidated. The aim of our study was to look for a residual morphological anomaly of the aortic arch which might be responsible. METHODS This was a retrospective study of patients aged over 10 years who had undergone surgery for coarctation of the aorta before the age of 1 year, consecutively between 1979 and 1993, and free from re-coarctation clinically or with Doppler. All of them had a blood pressure effort test on a cycling machine, echocardiography and an MRI of the thoracic aorta. RESULTS 61 patients were included. Their median age was 15 years, 59% were male, 15% were hypertensive at rest and 56% on effort. With univariate analysis, only the average blood pressure (p=0.03) and the resting pulse pressure (p=0.001) were associated with hypertension on effort. With multivariate analysis the only factors that correlated independently with maximum arterial pressure on effort were the height of the patient (p=0.02) and the pulse pressure (p<0.0001). The surgical technique and the age at intervention were not associated with hypertension on effort (p=0.96 and 0.69 respectively). The diameter of the horizontal aorta and the aorta at the site of repair, measured on MRI, added to the diameter of the descending aorta at the diaphragm were not lower in patients with hypertension on effort (p=0.77 and 0.38). There were proportionally more Roman type aortic arches than Gothic types in patients with hypertension on effort, but this difference was not significant (p=0.18). CONCLUSION In our study, the patients with hypertension on effort following correction of coarctation of the aorta did not display any residual obstruction at the level of the aortic cross on MRI. However, they had a resting pulse pressure that was significantly higher than the non hypertensive patients, reflecting an increase in the aortic wall rigidity.
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Affiliation(s)
- E Bergoënd
- Service de chirurgie cardiaque pédiatrique, Centre de pédiatrie Clocheville, hôpital Trousseau, CHU de Tours.
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Favreau A, Legendre A, Bergoënd E, Neville P, Vaillant MC, Marchand M, Chantepie A. [Quality of life of patients with total cavopulmonary anastomosis]. Arch Mal Coeur Vaiss 2006; 99:463-9. [PMID: 16802736] [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: 05/10/2023]
Abstract
INTRODUCTION Total cavo-pulmonary connection (TCPC) represents the current surgery standard for congenital univentricular heart disease (CUHD) patients. We studied the health related quality of life (HRQOL) expressed by TCPC operated patients. PATIENTS AND METHODS This transversal study is based on 24 children and 10 adult TCPC patients aged from 5 to 41 years old. The HRQOL evaluation relies on generic self report instruments such as the PedsQL 4.0 for the children and their parents, and the Duke Health profile for the adult patients. Additional questions were specifically designed for this study as well. RESULTS AND DISCUSSION The estimated HRQOL is 68.15 for the children and 68.71 for their parents. In these young cases, the global HRQOL or some specific score are altered when any comorbidity or scholar difficulties are present, or when TCPC was performed more than 10 years ago. The estimated HRQOL is 74.67 in adulthood. In these patients, the young age, the lifestyle, the onset of more than 2 early complications ans the necessity of anti-arrhythmia therapy decrease various HRQOL scores. The physical handicap is considered as the major limitation for children and adult patients. Thanks to adaptative and cognitive compensatory mechanisms, such as resilience, both groups express a satisfying HRQOL assessment. CONCLUSION Our study indicates that TCPC provides a good HRQOL in CUHD patients despite the complex management and follow-up of these diseases, the risk of complication onset and the physical handicap usually observed.
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Affiliation(s)
- A Favreau
- Unité de cardiologie pédiatrique, service de pédiatrie A, hôpital d'enfants Gatien de Clocheville, CHU de Tours
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