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Goulenok T, Seurat J, Selle ADL, Jullien V, Leflon-Guibout V, Grall N, Lescure FX, Lepeule R, Bertrand J, Fantin B, Burdet C, Lefort A. Pharmacokinetic Interaction between Rifampicin and Clindamycin in Staphylococcal Osteoarticular Infections. Int J Antimicrob Agents 2023:106885. [PMID: 37302771 DOI: 10.1016/j.ijantimicag.2023.106885] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/12/2023] [Accepted: 06/06/2023] [Indexed: 06/13/2023]
Abstract
The oral combination of clindamycin and rifampicin is relevant for the treatment of staphylococcal osteoarticular infections (SOAI). However, rifampicin induces CYP3A4, suggesting a pharmacokinetic (PK) interaction with clindamycin with unknown PK/pharmacodynamic (PD) consequences. OBJECTIVES To quantify clindamycin PK/PD markers before and during rifampicin co-administration in OAI. METHODS Patients with SOAI were included (NCT02782078). After an initial intravenous antistaphylococcal treatment, oral therapy was started with clindamycin (600 or 750 mg tid), followed by the addition of rifampicin 36 hours after. Population PK analysis was performed using the SAEM algorithm. PKPD markers were compared with and without rifampicin co-administration, each patient being his own control. RESULTS In 19 patients, Clindamycin Median (min-max) through concentrations were 2.7 (0.3-8.9) and <0.05 (<0.05-0.3) mg/L, before and during rifampicin administration, respectively. Rifampicin co-administration increased clindamycin clearance by a factor 16 and reduced the AUC0-8h /MIC by a factor 15 (p<0.005). We simulated clindamycin plasma concentration for 1000 individuals, without and with rifampicin. Against a susceptible S. aureus strain with a clindamycin MIC of 0.0625 mg/L, more than 80% of individuals would reach all the proposed PKPD targets without co-administration of rifampicin, even with a low clindamycin dose. For the same strain, when rifampicin was co-administered, the probability to reach clindamycin PKPD targets dropped to 1% to have a %fT>MIC = 100% and to 6% to achieve an AUC0-24/MIC > 60, even with high dose of clindamycin. CONCLUSION Rifampicin co-administration with clindamycin has high impact on clindamycin exposure and PKPD targets in SOAI, which could result in clinical failures, even for a fully susceptible strain.
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Affiliation(s)
- T Goulenok
- Département de Médecine Interne, Hôpital Bichat-Claude Bernard, GHU APHP Nord, Université de Paris, France.
| | - J Seurat
- Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
| | - A de La Selle
- Département de Médecine Interne, Hôpital Beaujon, Clichy, GHU APHP Nord, Université de Paris, France
| | - V Jullien
- Université Sorbonne Paris Nord, UF de Pharmacologie, hôpital Jean Verdier, 93141 Bondy, France
| | - V Leflon-Guibout
- Service de Microbiologie, Hôpital Beaujon, Clichy, GHU APHP Nord, Université de Paris, France
| | - N Grall
- Service de Bactériologie, Hôpital Bichat-Claude Bernard GHU APHP Nord, Université de Paris, France; Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
| | - F X Lescure
- Service de Maladies Infectieuses et Tropicales, Hôpital Bichat-Claude Bernard GHU APHP Nord, Université de Paris, France; Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
| | - R Lepeule
- Unité transversale de traitement des infections, Assistance Publique des Hôpitaux de Paris (APHP), Hôpitaux Universitaires Henri Mondor, 94010, Créteil, France; EA 7380 Dynamyc, EnvA, UPEC, Université Paris Est Créteil, 94000 Creteil, France
| | - J Bertrand
- Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
| | - B Fantin
- Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
| | - C Burdet
- Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France; Département d'Épidémiologie, Biostatistique et Recherche Clinique, Hôpital Bichat-Claude Bernard GHU APHP Nord, Université de Paris, France
| | - A Lefort
- Département de Médecine Interne, Hôpital Beaujon, Clichy, GHU APHP Nord, Université de Paris, France; Université Paris Cité, INSERM 1137, IAME, Paris F-75018, France
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Paulino M, Espinosa-Bustos C, Bertrand J, Cabezas D, Mella J, Dávila B, Cerecetto H, Ballesteros-Casallas A, Salas CO. Development of 3D-QSAR and pharmacophoric models to design new anti- Trypanosoma cruzi agents based on 2-aryloxynaphthoquinone scaffold. SAR QSAR Environ Res 2022; 33:701-728. [PMID: 36106834 DOI: 10.1080/1062936x.2022.2120069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
In this work we have collected a set of 30 trypanosomicidal naphthoquinones and developed pharmacophoric and 3D-QSAR models as tools for the design of new potential anti-Chagasic compounds. Firstly, qualitative information was obtained from SAR and pharmacophoric models identifying some fragments around the 2-aryloxynaphthoquinone scaffold important for the antiparasitic activity. Then, 3D-QSAR CoMFA and CoMSIA models were developed. The models showed adequate statistical parameters where the steric, electrostatic, and hydrophobic features explain the trypanosomicidal effect. Therefore, to validate our models, we carried out the design, synthesis, and biological evaluation on T. cruzi epimastigotes of five new compounds (33a-e). According to CoMFA model, three out of five compounds showed pIC50 values within one logarithmic unit of deviation. The two compounds that did not fit the predictions were those with high lipophilicity, which agreed with the SAR and pharmacophore models. Docking and molecular dynamic studies were performed on T. cruzi trypanothione reductase, in a proposed binding site for this type of naphthoquinone. Interestingly, 33a-e showed the same interaction pattern as a naphthoquinone inhibitor (2). Finally, predicted drug-likeness properties indicated that 33a-e have optimal oral bioavailability. Thus, this study provides new in silico models for obtaining novel trypanosomicidal compounds.
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Affiliation(s)
- M Paulino
- Área Bioinformática, Departamento de Experimentación y Teoría de la Materia y sus Aplicaciones, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - C Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - J Bertrand
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - D Cabezas
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - J Mella
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Centro de Investigación Farmacopea Chilena, Escuela de Química y Farmacia, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso, Chile
| | - B Dávila
- Grupo de Química Orgánica Medicinal, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - H Cerecetto
- Grupo de Química Orgánica Medicinal, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Área de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - A Ballesteros-Casallas
- Área Bioinformática, Departamento de Experimentación y Teoría de la Materia y sus Aplicaciones, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - C O Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
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Russo B, Borowczyk J, Cacialli P, Moguelet P, Truchetet ME, Modaressi A, Brembilla N, Bertrand J, Boehncke WH, Chizzolini C. AB0125 IL-25 PARTICIPATES IN KERATINOCYTE-DRIVEN DERMAL MATRIX TURNOVER AND IS REDUCED IN SYSTEMIC SCLEROSIS (SSc) EPIDERMIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundEvidence shows that dysfunctional SSc keratinocytes contribute to fibrosis by altering dermal homeostasis (1, 2). Whether interleukin-25 (IL-25), an IL-17 family member regulating many epidermal functions (3), takes part in skin fibrosis is unknown.ObjectivesTo investigate the role of IL-25 in skin fibrosis.MethodsThe expression of IL-25 was evaluated by immunofluorescence and in situ hybridization in 10 SSc and 7 healthy donors (HD) skin biopsies. Epidermal equivalents (EE) reconstituted by primary HD keratinocytes were used as a model to study transcriptomic changes induced by IL-25 in the epidermis. RNA expression profile in EE was characterized by RNAseq. The conditioned medium (CM) from primary SSc and HD keratinocytes primed with IL-25 was used to stimulate fibroblasts. IL-6, IL-8, MMP-1, type-I collagen (col-I), and fibronectin production by fibroblasts was assessed by ELISA.ResultsSSc epidermis expressed lower levels of IL-25 compared to HD. In EE, IL-25 regulated several molecular pathways related to wound healing and extracellular matrix (ECM) remodeling. Compared to control CM, the CM from IL-25-primed keratinocytes enhanced the fibroblast production of MMP-1, IL-6, IL-8, but not of Col-I nor fibronectin. However, IL-25 significantly reduced the production of Col-I when applied directly to fibroblasts and partially inhibit α-smooth muscle actin (α-SMA) expression promoted by TGFβ. The activation of keratinocytes by IL-25 was receptor-dependent and evident after a very short incubation time (10 min), largely mediated by IL-1, suggesting enhanced and specific release of preformed mediators.ConclusionThese results show that IL-25 participates to skin homeostasis and its decreased expression in SSc may contribute to skin fibrosis by favoring ECM deposition over degradation.References[1]Russo B, Brembilla NC, Chizzolini C. Interplay between Keratinocytes and Fibroblasts: A Systematic Review Providing a New Angle for Understanding Skin Fibrotic Disorders. Frontiers in immunology. 2020; 11:648.[2]Russo B, Borowczyk J, Boehncke WH, Truchetet ME, Modarressi A, Brembilla NC, et al. Dysfunctional keratinocytes increase dermal inflammation in systemic sclerosis. Results from tissue-engineered scleroderma epidermis. Arthritis & rheumatology. 2021.[3]Borowczyk J, Shutova M, Brembilla NC, Boehncke WH. IL-25 (IL-17E) in epithelial immunology and pathophysiology. J Allergy Clin Immunol. 2021.AcknowledgementsWe thank Natacha Civic and Mylène Docquier (Genomics Platform) for performing the RNA sequencing; Nicolas Laudet (Bioimaging Core Facility) for quantification of immune-histology, François Prodon and Olivier Brun for microscope imaging (Bioimaging Core Facility), Marie Ebrahim Malek and Laura de Luca (Histology Core Facility) for contribution to tissue preparation (all at University Medical Center, Geneva, Switzerland).Disclosure of InterestsBarbara Russo: None declared, Julia Borowczyk: None declared, Pietro Cacialli: None declared, Philippe Moguelet: None declared, Marie-Elise Truchetet Speakers bureau: Abbvie, Lilly, SOBI and Boehringer Ingelheim, Ali Modaressi: None declared, Nicolò Brembilla: None declared, Julian Bertrand: None declared, Wolf-Henning Boehncke Speakers bureau: Abbvie, Almirall, BMS, Celgene, Leo, Lilly, Novartis, and UCB, Carlo Chizzolini Speakers bureau: GSK, Roche, Boehringer Ingelheim
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Thorup AS, Strachan D, Caxaria S, Poulet B, Thomas B, Eldridge S, Nalesso G, Whiteford J, Pitzalis C, Aigner T, Corder R, Bertrand J, Dell’accio F. OP0200 BLOCKING ROR2 IMPROVES CARTILAGE INTEGRITY AND PROVIDES PAIN RELIEF IN OSTEOARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Osteoarthritis (OA) is the leading cause of chronic disability worldwide, affecting 12% of the population, and yet we still do not have a disease-modifying treatment. Cartilage breakdown is the hallmark of OA, and patients suffer from pain and loss of joint function/independence, severely affecting quality of life. Therefore, there is a huge unmet clinical need.Receptor tyrosine kinase–like orphan receptor 2 (ROR2) is a non-canonical WNT receptor that regulates the planar cell polarity pathway, controlling limb outgrowth during development. During skeletal development, chondrocytes require ROR2 to undergo hypertrophy throughout the process of endochondral bone formation1. Loss of function mutations in humans causes Recessive Robinow Syndrome, leading to limb shortening and brachydactyly2,3.Although absent from healthy adult articular cartilage, our initial studies identified high expression levels of ROR2 in chondrocytes from patients with OA, suggesting a role in the disease processObjectives:To test the potential of ROR2 blockade as a disease-modifying treatment for OA.Methods:Human cartilage organoid model in nude mice, menisco-ligament injury (MLI) model of OA in mice, behavioural studies, in vitro studies in cells.Results:ROR2/WNT5A signaling was increased in osteoarthritic cartilage. Blocking ROR2 was sufficient to induce articular chondrogenesis and suppress expression of aggrecanases in a mesenchymal stem cell line, and to support cartilage formation in a human cartilage organoid model in nude mice using primary chondrocytes from patients with OA.In the MLI model of OA, blocking ROR2 in therapeutic regime using atelocollagen-conjugated siRNA resulted in reduced cartilage destruction and in rapid and sustained pain relief. Due to the limited expression pattern of ROR2 in adulthood, no systemic or local toxicity were expected, nor were any observed4.With the current technology, ROR2 blockade requires intra-articular (IA) injections of siRNA conjugated to atelocollagen every 5 days. Preliminary efficacy data of potentially longer-acting ROR2 blockers are promising.The mechanism of action of ROR2 blockade was independent of modulation of canonical WNT signaling.ROR2/WNT5A promoted nuclear localization of YAP, which required both Rho and G-proteins. YAP signaling downstream of ROR2 also required Rho, but not G-proteins. YAP and TEAD inhibition was required, but not sufficient, for the chondrogenic effect of blocking ROR2. Therefore, additional, yet unknown mechanisms must be involved downstream of ROR2.Conclusion:ROR2 blockade has potential as a disease-modifying treatment for OA, resulting in cartilage protection and rapid and sustained pain relief in a murine model. This will be crucial for clinical success of any treatment for OA and promote patient compliance.Our current siRNA-atelocollagen based technology requires IA injections too frequently to be acceptable for patients. We are developing ROR2 blockade which can be administered systemically or IA not more often than every 3 months - work funded by FOREUM.References:[1]DeChiara, T. M. et al. Ror2, encoding a receptor-like tyrosine kinase, is required for cartilage and growth plate development. Nat. Genet.24, 271–4 (2000).[2]Bokhoven, H. Van, Celli, J. & Kayserili, H. Mutation of the gene encoding the ROR2 tyrosine kinase causes autosomal recessive Robinow syndrome. Nature25, 423–426 (2000).[3]Afzal, A., Rajab, A., Fenske, C. & Oldridge, M. Recessive Robinow syndrome, allelic to dominant brachydactyly type B, is caused by mutation of ROR2. Nature25, 419–422 (2000).[4]Thorup, A.-S. et al. ROR2 blockade as a therapy for osteoarthritis. Sci. Transl. Med.12, eaax3063 (2020).Acknowledgements:We gratefully acknowledge funding support of this work by the Medical College of St Bartholomew’s Hospital Trust, the William Harvey Research Foundation, FOREUM foundation for research in rheumatology (1016807), the MRC (MR/L022893/1, MR/N010973/1, MR/P026362/1, MR/K013076/1), Versus Arthritis (21515, 20886, 21621, 20859), and the DFG Emmy-Noether program (BE4328/5-1).Disclosure of Interests:Anne-Sophie Thorup: None declared, Danielle Strachan: None declared, Sara Caxaria: None declared, Blandine Poulet: None declared, Bethan Thomas: None declared, Suzanne Eldridge: None declared, Giovanna Nalesso: None declared, James Whiteford: None declared, Costantino Pitzalis: None declared, Thomas Aigner: None declared, Roger Corder: None declared, Jessica Bertrand: None declared, Francesco Dell’Accio Consultant of: Samumed and UCB
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Bernabei I, Kronenberg D, Stange R, Bertrand J, Hügle T, So A, Busso N, Nasi S. POS0041 THE GASOTRANSMITTER HYDROGEN SULFIDE (H2S) IS PROTECTIVE AGAINST CALCIFIC TENDINOPATHY (CT). Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Pathological (or heterotopic) calcification is the deposition of calcium-containing crystals in soft tissues that normally do not calcify. The deposition of these crystals in tendons such as the rotator cuff and the Achilles tendon is known as calcific tendinopathy (CT). CT is a painful condition, which increases tendon rupture rate and leads to disability.Objectives:To understand what inhibits calcification, in order to provide new strategies to treat a condition for which existing therapies are ineffective.Methods:We investigated the role of the gasotransmitter hydrogen sulfide (H2S), and in particular of the H2S-producing enzyme cystathionine γ-lyase (CSE) in CT. In vitro, we induced calcification in tenocytes from WT and CSE KO mice or we treated WT tenocytes with different H2S donors. In vivo, calcification was assessed in a surgery-induced murine model of CT (tenotomy of the Achilles tendon) and in a spontaneous model of CT (aging). Samples obtained from patients with rotator cuff or Achilles tendon CT were also analyzed. To investigate the underlying mechanisms of the CSE-H2S effect, we focused on the bone morphogenic proteins (BMPs) pathway. We additionally explored if altered extracellular matrix (ECM) organization, due to lysyl oxidase (LOX) activity and aberrant collagen-crosslinks, could also be involved in CT. In this context, we studied if H2S could affect LOX expression and activity.Results:In vitro, tenocyte calcification was inhibited by exogenous H2S-donors, while it was exacerbated in CSE KO tenocytes. The protective role of CSE-H2S was confirmed in vivo. In aged mice, microtomography analysis revealed exacerbated Achilles tendon calcification in CSE KO mice compared to WT. In the surgery-induced model of CT, an inverse correlation between calcification and CSE expression in operated Achilles tendon was seen over time. Similarly, inversed correlation between calcification and CSE expression was found in human CT samples.Reduced calcification in tenocytes exposed to H2S was accompanied by decreased expression of genes coding for BMP2, BMP4 and decreased activation of the BMP signaling pathway (pSMAD1/5/8). On the contrary, BMPs expression and BMPs-pathway activation were exacerbated in CSE KO tenocytes compared to WT tenocytes.We next investigated whether ECM disorganization could play a role in CT. Tenocytes cultured in calcification media and treated with the pan-inhibitor of lysyl oxidases (LOX, LOXL1-4) β-aminopropionitrile (BAPN) showed decreased calcification. This pointed to a potential beneficial role of LOX inhibition, therefore decreased collagen-crosslinks, in CT. By analysis of LOXs gene expression in WT and CSE KO tenocytes cultured in calcifying condition, we found much higher expression (4-fold) of LOX, LOL2 and LOXL4 in CSE KO tenocytes. Moreover, H2S-donors inhibited LOX activity. Altogether, these results suggest that decreased H2S could lead to aberrant LOX expression and activity, excessive collagen cross-links in the ECM, and ultimately calcification. Further experiments are ongoing to prove these hypotheses.Conclusion:We suggest targeting H2S production by CSE, or supplying an H2S-donor, is of therapeutic relevance to pathological calcification in the context of CT and can modify its disease course.The anti-mineralizing effect of H2S in tendons could be due to both inhibition of the BMPs pathway and suppression of abnormal LOXs activity.Disclosure of Interests:None declared.
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Meinshausen AK, Herbster M, Zwahr C, Soldera M, Müller A, Halle T, Lasagni AF, Bertrand J. Aspect ratio of nano/microstructures determines Staphylococcus aureus adhesion on PET and titanium surfaces. J Appl Microbiol 2021; 131:1498-1514. [PMID: 33565669 DOI: 10.1111/jam.15033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/26/2021] [Accepted: 02/06/2021] [Indexed: 01/09/2023]
Abstract
AIMS Joint infections cause premature implant failure. The avoidance of bacterial colonization of implant materials by modification of the material surface is therefore the focus of current research. In this in vitro study the complex interaction of periodic structures on PET and titanium surfaces on the adhesion of Staphylococcus aureus is analysed. METHODS AND RESULTS Using direct laser interference patterning as well as roll-to-roll hot embossing methods, structured periodic textures of different spatial distance were produced on surfaces and S. aureus were cultured for 24 h on these. The amount of adhering bacteria was quantified using fluorescence microscopy and the local adhesion behaviour was investigated using scanning electron microscopy. For PET structures, minimal bacterial adhesion was identified for an aspect ratio of about 0·02. On titanium structures, S. aureus adhesion was significantly decreased for profile heights of < 200 nm. Our results show a significantly decreased bacterial adhesion for structures with an aspect ratio range of 0·02 to 0·05. CONCLUSIONS We show that structuring on surfaces can decrease the amount of S. aureus on titanium and PET as common implant materials. SIGNIFICANCE AND IMPACT OF THE STUDY The study highlights the immense potential of applying specific structures to implant materials to prevent implant colonization with pathogen bacteria.
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Affiliation(s)
- A-K Meinshausen
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - M Herbster
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - C Zwahr
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - M Soldera
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - A Müller
- Institute for Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - T Halle
- Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - A F Lasagni
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany.,Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany
| | - J Bertrand
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
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Bollmann M, Pinno K, Ehnold LI, Märtens N, Märtson A, Pap T, Stärke C, Lohmann CH, Bertrand J. MMP-9 mediated Syndecan-4 shedding correlates with osteoarthritis severity. Osteoarthritis Cartilage 2021; 29:280-289. [PMID: 33246160 DOI: 10.1016/j.joca.2020.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 09/25/2020] [Accepted: 10/13/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) is a degenerative joint disease inducing the degradation of the articular cartilage. Syndecan-4 (Sdc4) is a heparan sulfate proteoglycan, expressed under inflammatory conditions and by chondrocytes during OA. Little is known about Sdc4 shedding and its regulation in OA. Therefore, we investigated the regulation of Sdc4 shedding and underlying shedding mechanisms under OA conditions. DESIGN Articular cartilage, serum, synovial fluid and synovial membrane from OA patients with different radiological severity were analyzed. ELISA, RT-qPCR and IHC for Sdc4, MMP-2 and -9 were performed. MMP inhibitors and siRNA were evaluated for their effect on Sdc4 shedding by ELISA and on IL-1 signaling by western blot (pERK/ERK). RESULTS Shed Sdc4 was increased in synovial fluid of OA patients, but not in the serum and is a good predictor (AUC = 0.72) for OA severity with a sensitivity of 67.5% and specificity 65.2%. MMP-9, but not MMP-2, was increased in cartilage and synovial membrane at mRNA levels and in the synovial fluid at protein levels. Shed Sdc4 correlated with the amount of MMP-9 in synovial fluid. Further, the inhibition and knock-down of MMP-9 decreased the amount of shed Sdc4 in vitro. Increased Sdc4 shedding resulted in less phosphorylation of ERK upon IL-1β stimulation. CONCLUSION Shed Sdc4 might be a good prognostic biomarker for OA mediated cartilage degradation. MMP-9 seems to be the relevant sheddase for Sdc4 under OA conditions, desensitizing chondrocytes towards IL-1 signaling.
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Affiliation(s)
- M Bollmann
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - K Pinno
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - L I Ehnold
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - N Märtens
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - A Märtson
- Department of Traumatology and Orthopedics, University of Tartu, Tartu University Hospital, Tartu, Estonia
| | - T Pap
- Institute of Musculoskeletal Medicine, University Hospital Münster, Münster, Germany
| | - C Stärke
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - C H Lohmann
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - J Bertrand
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany.
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Bertrand J, Boyazis P, Morandini E, Buche M, Benoit A. [Coronary aneurysm, it exists !]. Rev Med Liege 2020; 75:697-698. [PMID: 33155440] [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: 06/11/2023]
Abstract
Coronary aneurysm has an incidence of 1,1 to 4,9 % in patients undergoing a coronary angiography. Many etiologies may be accused, atherosclerosis is associated in up to 50 % of cases. We report the case of a 76-year-old patient with a large coronary aneurysm.
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Affiliation(s)
- J Bertrand
- Service de Cardiologie, Hôpital de Libramont, Belgique
| | - P Boyazis
- Service de Cardiologie, Hôpital de Libramont, Belgique
| | - E Morandini
- Service de Cardiologie, Hôpital de Libramont, Belgique
| | - M Buche
- Service de Chirurgie, Clinique Saint-Luc, Bouge, Belgique
| | - A Benoit
- Service de Cardiologie, Hôpital de Libramont, Belgique
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Nasi S, Bertrand J, Bollmann M, Stange R, Pap T. THU0435 CALCIUM PYROPHOSPHATE DIHYDRATE (CPPD) CRYSTALS BUT NOT BASIC CALCIUM PHOSPHATE (BCP) CRYSTALS INDUCE SYNDECAN-4 EXPRESSION IN CARTILAGE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Chondrocalcinosis is a painful rheumatic condition caused by the deposition of calcium pyrophosphate dihydrate crystals (CPPD) in joint tissues, and especially in cartilage. It is known that CPPD crystals cause inflammation and degenerative changes in joint, but the underlying mechanisms remain poorly understood. In particular, nothing is known about how these crystals regulates transmembrane heparan sulphate proteoglycans (HSPGs). Our attention focused on one family of HSPGs called syndecans as they have important roles both as adhesion molecules, by mediating chondrocyte-extracellular matrix interactions, and as modulators of intracellular signaling triggered by cytokines and growth factors.Objectives:The aim of this study was to evaluate how CPPD crystals modulates syndecan expression in chondrocytes and in cartilage, and how this modulation can be ultimately linked to cartilage damage during chondrocylcinosis.Methods:Murine chondrocitic ATDC5 cells were stimulated with 0,1 ng/ml CPPD crystals or with 0,1 ng/ml basic-calcium phosphate crystals (BCP), a family of calcium-containing crystals found in other rheumatic conditions such as osteoarthritis (OA). Cytotoxicity was evaluated by lactate dehydrogenase (LDH) release in the supernatant at 30 minutes, and 3, 6, 24 hours after stimulation. At the same time-points, mRNA expression levels of syndecans (Synd-1, -2, -3, -4) and of matrix-degrading enzymes (Mmp-3, -9, -13; Adamts-4, -5) was analysed by qRT-PCR. Finally, Syndecan-4 protein expression was studied by immunohistochemistry (IHC) in cartilage samples of patients with chondrocalcinosis and in samples of patients with severe OA without chondrocalcinosis as control.Results:LDH assay revealed no increased cytotoxicity by CPPD or BCP at any time-point. qRT-PCR indicated that CPPD crystals but not BCP crystals induced Synd-2 and -3 upregulation at 30 minutes after stimulation and Synd-4 upregulation at 3 hours, while no modulation of syndecans was seen at later time-points. CPPD also induced Adamts-4 expression at 3 hours after stimulation, and Mmp-9 expression at 3 and 6 hours. The expression of the other matrix-degrading enzymes was not affected. Human chondrocalcinosis cartilage exhibited enhanced Synd-4 expression compared to severe OA cartilage containing BCP calcification. Interestingly, Synd-4 expression was observed in the extracellular matrix but not on cell membrane, suggesting that maybe Synd-4 undergoes shedding (Figure 1).Figure 1.Representative Synd-4 IHC in control patients (Ctrl, severe OA) and chondrocalcinosis patients (CPPD). Note increased Synd-4 expression in extracellular matrix of CPPD patients compared to Ctrl ones.Conclusion:BCP and CPPD crystals seem to trigger differential effects in terms of modulation of syndecans in chondrocitic cells. CPPD crystals induce Synd-4 and Adamts-4 and Mmp-9 which are not induced by BCP crystals. It remains to be clarified whether the two events are interlinked. In particular, further studies are required to investigate if Adamts-4 and Mmp-9 are involved in Synd-4 shedding or if vice versa Synd-4 regulates Adamts-4 and Mmp-9 activation and downstream cartilage breakdown in chondrocalcinosis.Disclosure of Interests: :Sonia Nasi: None declared, Jessica Bertrand Grant/research support from: Pfizer, Speakers bureau: Pfizer, Miriam Bollmann: None declared, Richard Stange: None declared, Thomas Pap: None declared
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Meyer F, Bollmann M, Kornak U, Bertrand J. AB0067 CHONDROCALCINOSIS IS ASSOCIATED WITH A SPECIFIC EFFECT ON THE CHONDROCYTE PHENOTYPE THAT MARKEDLY DIFFERS FROM OA. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Calcification of cartilage with BCP crystals is a common finding during osteoarthritis (OA) and is directly linked to the severity of the disease and hypertrophic differentiation of chondrocytes. Chondrocalcinosis (CC) is associated with CPPD crystal formation. There is only little knowledge about the effect of CPPD crystals on chondrocytes.Objectives:The aim of this study was to investigate the chondrocyte phenotype in CC cartilage and the effect of CPPD crystals on chondrocytes.Methods:Cartilage samples of patients with CC were used and compared with samples of severe OA patients without chondrocalcinosis and healthy cartilage samples served as control. Radiological presence of chondrocalcinosis was evaluated using standard X-ray pictures, as well as macroscopically inspection. The cartilage samples were stained using von Kossa/Safranin-orange staining. These stainings were used for OA severity scoring using the Chambers-Score. FTIR analyses was performed to distinguish CPPD and BCP crystals in cartilage. Chondrocyte differentiation markers were evaluated using Collagen 2 and X, as well as Sox9 and aggrecan as markers for chondrocyte hypertrophic differentiation in immunohistochemistry and qRT-PCR. TUNEL staining was performed to investigate cell death. In vivo results were validated using qRT-PCR for the expression of the respective genes after stimulation of C28 chondrocytes with CPPD and BCP crystals.Results:Radiologically detectable cartilage calcifications were evident in chondrocalcinosis patients, but absent in OA patients without CC. CPPD crystals were detected on the cartilage surface, whereas BCP crystals were detected in the pericellular matrix of hypertrophic chondrocytes. CC cartilage exhibited an increased collagen X expression compared to healthy cartilage, as well as to severe OA cartilage containing BCP calcification. Interestingly, aggrecan and collagen 2 were not reduced in CC cartilage, but markedly reduced in OA cartilage. TUNEL positive cells were significantly increased in CPPD cartilage compared to OA cartilage, although the histological OA severity was lower. qRT-PCR indicated no relevant influence of CPPD crystals on hypertrophic marker genes, whereas BCP crystals significantly induced hypertrophic differentiation.Conclusion:BCP and CPPD crystals seem to trigger differential effects on the chondrocyte phenotype. BCP crystals induce hypertrophic differentiation, which is not induced by CPPD crystals.Acknowledgments:The project was funded by theDeutsche Rheumastifung by the sponsor Dr. Sigrid Schuler.Disclosure of Interests:Franziska Meyer: None declared, Miriam Bollmann: None declared, Uwe Kornak: None declared, Jessica Bertrand Grant/research support from: Pfizer, Speakers bureau: Pfizer
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Bertrand J, Petit V, Sohier P, Gesbert F, Larue L. 544 The Loss of Dicer Affects Migration and Homing of Melanocytes and Induces Hair Greying. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.459] [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: 10/26/2022]
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Yudin M, Kennedy V, Bekele T, Watson J, Globerman J, McGee A, Bertrand J, Antoniou T, Rourke S, Loutfy M. Fertility desires and intentions among heterosexual HIV-positive men: an important and overlooked population in obstetrics and gynecology. Am J Obstet Gynecol 2018. [DOI: 10.1016/j.ajog.2018.10.042] [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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Babazadeh S, Lea S, Kayembe P, Akilimali P, Eitmann L, Anglewicz P, Bertrand J. Assessing the contraceptive supply environment in Kinshasa, DRC: trend data from PMA2020. Health Policy Plan 2018; 33:155-162. [PMID: 29136172 PMCID: PMC5886263 DOI: 10.1093/heapol/czx134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2017] [Indexed: 11/23/2022] Open
Abstract
Performance Monitoring and Accountability 2020 (PMA2020) is a population-based and facility-based survey program conducted in 11 countries to track contraceptive use dynamics and the supply environment. Annual data collection provides trend data unavailable from any other source. Two-stage cluster sampling was used to select 58 enumeration areas in Kinshasa; data were collected in 2014, 2015 and 2016 from three to six service delivery points (SDPs) per EA. Of the 228–248 SDPs surveyed each year, only two-thirds reported to offer family planning (FP) services. Of those reporting to offer FP, one-fifth or more did not do so on the day of the survey. As of 2016, only one-half of SDPs offering FP had at least three methods available, a proxy for contraceptive choice; only one in five had at least five methods. Long-acting reversible contraceptives, including implants and IUDs, were less widely offered and more often stocked out than resupply methods, including condoms, pills and injectables. Contraceptive stockouts were rampant: in 2016, over a quarter of the SDPs experienced stockouts of all methods (except condoms) in the previous 3 months, and two of the three most widely used methods—implants and injectables—were also the most likely to be stocked out. The findings documented the inconsistency in pricing of methods across facilities; moreover, less than one quarter of SDPs posted prices. Patterns in the contraceptive supply environment remained relatively unchanged between 2014 and 2016. The PMA2020 SDP module provides timely, actionable information to the DRC government, FP implementing organizations and donors involved in FP service delivery in Kinshasa, DRC. Yet the value of this information will be determined by the ability of the local FP stakeholders to use it in bringing the needed improvements identified by this survey to the contraceptive supply environment.
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Affiliation(s)
- S Babazadeh
- Global Health Management and Policy, Tulane University School of Public Health and Tropical Medicine, 1440 Canal St, Suite 1900, New Orleans, LA 70112, USA and
| | - S Lea
- Global Health Management and Policy, Tulane University School of Public Health and Tropical Medicine, 1440 Canal St, Suite 1900, New Orleans, LA 70112, USA and
| | - P Kayembe
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of the Congo
| | - P Akilimali
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of the Congo
| | - L Eitmann
- Global Health Management and Policy, Tulane University School of Public Health and Tropical Medicine, 1440 Canal St, Suite 1900, New Orleans, LA 70112, USA and
| | - P Anglewicz
- Global Health Management and Policy, Tulane University School of Public Health and Tropical Medicine, 1440 Canal St, Suite 1900, New Orleans, LA 70112, USA and
| | - J Bertrand
- Global Health Management and Policy, Tulane University School of Public Health and Tropical Medicine, 1440 Canal St, Suite 1900, New Orleans, LA 70112, USA and
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Abstract
Aims Early evidence has emerged suggesting that ceramic-on-ceramic articulations induce a different tissue reaction to ceramic-on-polyethylene and metal-on-metal bearings. Therefore, the aim of this study was to investigate the tissue reaction and cellular response to ceramic total hip arthroplasty (THA) materials in vitro, as well as the tissue reaction in capsular tissue after revision surgery of ceramic-on-ceramic THAs. Patients and Methods We investigated tissue collected at revision surgery from nine ceramic-on-ceramic articulations. we compared our findings with tissue obtained from five metal-on-metal THA revisions, four ceramic-on-polyethylene THAs, and four primary osteoarthritis synovial membranes. The latter were analyzed to assess the amount of tissue fibrosis that might have been present at the time of implantation to enable evaluation, in relation to implantation time, of any subsequent response in the tissues. Results There was a significant increase in tissue fibrosis with implantation time for all implant types tested. Interestingly, the tissue fibrosis in ceramic-on-ceramic THAs was significantly increased compared with metal-on-metal and ceramic-on-polyethylene. Additionally, we found ceramic wear particles in the periprosthetic tissue of ceramic implants. Fibroblasts responded with expression of cytokines when cultured on alumina-toughened zirconia (ATZ) and zirconia-toughened alumina (ZTA) ceramic surfaces. This response was more pronounced on ATZ ceramics compared with ZTA ceramics. The same inflammatory response was observed with peripheral blood mononuclear cells (PBMCs) cultured on ZTA and ATZ. Conclusion Our findings therefore, corroborate the previous findings that ceramic-on-ceramic periprosthetic revision tissue is fibrous and offer an explanation for this observation. We detected a long-term inflammatory response of PBMCs and an inflammatory response of fibroblasts to ATZ and ZTA ceramic. These findings partially explain the fibrotic tissue change in periprosthetic tissue of ceramic-on-ceramic bearings. Cite this article: Bone Joint J 2018;100-B:882–90.
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Affiliation(s)
- J. Bertrand
- Department of Orthopaedic Surgery, Otto-von-Guericke
University, Magdeburg, Germany
| | | | - V. Mai
- Mathys AG Bettlach, Bettlach, Switzerland
| | - F. Awiszus
- Department of Orthopaedic Surgery, Otto-von-Guericke
University, Magdeburg, Germany
| | - K. Harnisch
- Institute for Materials and Joining Technology,
Otto-von-Guericke University, Magdeburg, Germany
| | - C. H. Lohmann
- Department of Orthopaedic Surgery, Otto-von-Guericke
University, Magdeburg, Germany
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Held A, Glas A, Dietrich L, Bollmann M, Brandstädter K, Grossmann TN, Lohmann CH, Pap T, Bertrand J. Targeting β-catenin dependent Wnt signaling via peptidomimetic inhibitors in murine chondrocytes and OA cartilage. Osteoarthritis Cartilage 2018; 26:818-823. [PMID: 29559252 DOI: 10.1016/j.joca.2018.02.908] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 02/21/2018] [Accepted: 02/27/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The canonical Wnt signaling pathway has been shown to be involved in regulating chondrocyte hypertrophic differentiation during Osteoarthritis (OA). The aim of this study was to test the therapeutic potential of two stapled peptide canonical Wnt inhibitors - SAH-Bcl9 and StAx-35R - in preventing Wnt induced cartilage changes in OA. METHODS Primary neonatal murine chondrocytes and cartilage explants from OA patients undergoing total joint replacement for knee OA, were used for microscopy to determine matrix and cell penetrating capacity of fluorescein isothiocyanate FITC-tagged SAH-Bcl9 and StAx-35R peptides. T cell factor/lymphoid enhancer-binding factor (TCF/LEF) reporter assays were used to monitor the inhibition of Wnt3a induced β-catenin signaling by each peptide. Changes in chondrocyte phenotypic marker gene expression were analyzed by qRT PCR. RESULTS Both peptides localized intercellular in primary murine chondrocytes and cartilage explants. They inhibited Wnt3a induced TCF/LEF promoter activity in primary murine chondrocytes. Both inhibitors did not rescue Wnt3a altered expression of chondrocyte phenotypic genes (Sox9, Col2a1, Acan) and hypertrophy marker gene (Col10a1) at high doses (100 ng/ml). Upon application of 10 ng/ml Wnt3a, StAx-35R partially reversed the Wnt effect on Sox9 and Col2a1 gene expression. Both peptides, however, reversed the downregulation of SOX9 and aggrecan (ACAN), and decrease of COL10A1 gene expression in preserved human OA cartilage explants. CONCLUSION These data indicate that blockade of canonical Wnt signaling might be a therapeutic strategy to treat early OA cases and protect further cartilage degradation by preventing chondrocyte hypertrophic differentiation.
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Affiliation(s)
- A Held
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - A Glas
- Chemical Genomics Centre of the Max-Planck Society, Dortmund, Germany
| | - L Dietrich
- Chemical Genomics Centre of the Max-Planck Society, Dortmund, Germany
| | - M Bollmann
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - K Brandstädter
- Institute of Forensic Medicine, University Hospital Halle, Remote Office Magdeburg, Halle (Saale), Magdeburg, Germany
| | - T N Grossmann
- Chemical Genomics Centre of the Max-Planck Society, Dortmund, Germany; Department of Chemistry and Pharmaceutical Science, VU University Amsterdam, Amsterdam, The Netherlands
| | - C H Lohmann
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - T Pap
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany
| | - J Bertrand
- Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany.
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Hawellek T, Hubert J, Hischke S, Krause M, Bertrand J, Pap T, Püschel K, Rüther W, Niemeier A. Articular cartilage calcification of the hip and knee is highly prevalent, independent of age but associated with histological osteoarthritis: evidence for a systemic disorder. Osteoarthritis Cartilage 2016; 24:2092-2099. [PMID: 27390030 DOI: 10.1016/j.joca.2016.06.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 06/12/2016] [Accepted: 06/27/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Based on the concept of a systemic predisposition for articular cartilage calcification (CC), the aim of this study was to determine the prevalence and amount of bilateral CC of hip and knee joints in an unselected sample cohort by high-resolution digital contact radiography (DCR) and to analyze the association of CC with histological OA. METHODS Both hip and knee joints of 87 donors (48 m and 39 f; mean age 62) were analyzed by DCR in this post-mortem study of an unselected cohort of donors. Histological OA (OARSI) of the main load bearing area of femoral heads and medial femoral condyles was determined. RESULTS The prevalence of CC of the femoral head was 96.6%, of the knee 94.3%. Bilateral calcification was detected in 79.3% of hips and 86.2% of knees. Concomitant CC of all four joints was detected in 69.0% of donors. There was no difference between the amount of CC of hips and knees (P = 0.47). The amount of CC of any given hip or knee correlated with that of the contralateral hip (rs = 0.54, P < 0.001) or knee (rs = 0.50, P < 0.001). There was a correlation between the amount of CC and histological OA (hips rs = 0.48, P < 0.001, knees rs = 0.30, P = 0.004), but not between CC and age (hips rs = -0.09, P = 0.42; knees rs = 0.10, P = 0.34). CONCLUSIONS These data support the concept that articular CC occurs as the result of a systemic disorder. CC appears to be an early element of hip and knee OA pathogenesis independent of age.
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Affiliation(s)
- T Hawellek
- Department of Orthopaedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - J Hubert
- Department of Orthopaedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - S Hischke
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - M Krause
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - J Bertrand
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany.
| | - T Pap
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany.
| | - K Püschel
- Department of Legal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - W Rüther
- Department of Orthopaedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - A Niemeier
- Department of Orthopaedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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Menard O, Murez T, Bertrand J, Daille A, Cabaniols L, Robert M, Thuret R. Épidémiologie des calculs urinaires dans le Sud de la France : étude rétrospective monocentrique. Prog Urol 2016; 26:339-45. [DOI: 10.1016/j.purol.2016.04.005] [Citation(s) in RCA: 2] [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] [Received: 01/06/2016] [Accepted: 04/13/2016] [Indexed: 10/21/2022]
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Tessier A, Bertrand J, Chenel M, Comets E. Combined Analysis of Phase I and Phase II Data to Enhance the Power of Pharmacogenetic Tests. CPT Pharmacometrics Syst Pharmacol 2016; 5:123-31. [PMID: 27069775 PMCID: PMC4807465 DOI: 10.1002/psp4.12054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/11/2015] [Indexed: 12/29/2022] Open
Abstract
We show through a simulation study how the joint analysis of data from phase I and phase II studies enhances the power of pharmacogenetic tests in pharmacokinetic (PK) studies. PK profiles were simulated under different designs along with 176 genetic markers. The null scenarios assumed no genetic effect, while under the alternative scenarios, drug clearance was associated with six genetic markers randomly sampled in each simulated dataset. We compared penalized regression Lasso and stepwise procedures to detect the associations between empirical Bayes estimates of clearance, estimated by nonlinear mixed effects models, and genetic variants. Combining data from phase I and phase II studies, even if sparse, increases the power to identify the associations between genetics and PK due to the larger sample size. Design optimization brings a further improvement, and we highlight a direct relationship between η‐shrinkage and loss of genetic signal.
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Affiliation(s)
- A Tessier
- INSERM IAME UMR 1137 Paris France; Université Paris Diderot, IAME UMR 1137, Sorbonne Paris Cité Paris France; Division of Clinical Pharmacokinetics and Pharmacometrics Institut de Recherches Internationales Servier Suresnes France
| | - J Bertrand
- University College London, Genetics Institute London UK
| | - M Chenel
- Division of Clinical Pharmacokinetics and Pharmacometrics Institut de Recherches Internationales Servier Suresnes France
| | - E Comets
- INSERM IAME UMR 1137 Paris France; Université Paris Diderot, IAME UMR 1137, Sorbonne Paris Cité Paris France; INSERM CIC 1414, Université Rennes 1 Rennes France
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Matta J, Carette C, Levy-Marchal C, Bertrand J, Petera M, Zins M, Pujos-Guillot E, Comte B, Czernichow S. Comparaison des apports alimentaires de sujets nés avec un petit poids de naissance versus ceux de poids normal dans la cohorte Haguenau. NUTR CLIN METAB 2016. [DOI: 10.1016/j.nupar.2016.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Norez C, Vandebrouck C, Bertrand J, Noel S, Durieu E, Oumata N, Galons H, Antigny F, Chatelier A, Bois P, Meijer L, Becq F. Roscovitine is a proteostasis regulator that corrects the trafficking defect of F508del-CFTR by a CDK-independent mechanism. Br J Pharmacol 2015; 171:4831-49. [PMID: 25065395 DOI: 10.1111/bph.12859] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 03/07/2014] [Accepted: 04/10/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE The most common mutation in cystic fibrosis (CF), F508del, causes defects in trafficking, channel gating and endocytosis of the CF transmembrane conductance regulator (CFTR) protein. Because CF is an orphan disease, therapeutic strategies aimed at improving mutant CFTR functions are needed to target the root cause of CF. EXPERIMENTAL APPROACH Human CF airway epithelial cells were treated with roscovitine 100 μM for 2 h before CFTR maturation, expression and activity were examined. The mechanism of action of roscovitine was explored by recording the effect of depleting endoplasmic reticulum (ER) Ca(2+) on the F508del-CFTR/calnexin interaction and by measuring proteasome activity. KEY RESULTS Of the cyclin-dependent kinase (CDK) inhibitors investigated, roscovitine was found to restore the cell surface expression and defective channel function of F508del-CFTR in human CF airway epithelial cells. Neither olomoucine nor (S)-CR8, two very efficient CDK inhibitors, corrected F508del-CFTR trafficking demonstrating that the correcting effect of roscovitine was independent of CDK inhibition. Competition studies with inhibitors of the ER quality control (ERQC) indicated that roscovitine acts on the calnexin pathway and on the degradation machinery. Roscovitine was shown (i) to partially inhibit the interaction between F508del-CFTR and calnexin by depleting ER Ca(2+) and (ii) to directly inhibit the proteasome activity in a Ca(2+) -independent manner. CONCLUSIONS AND IMPLICATIONS Roscovitine is able to correct the defective function of F508del-CFTR by preventing the ability of the ERQC to interact with and degrade F508del-CFTR via two synergistic but CDK-independent mechanisms. Roscovitine has potential as a pharmacological therapy for CF.
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Affiliation(s)
- C Norez
- Institut de Physiologie et Biologie Cellulaires, Université de Poitiers, Poitiers, France
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Clarke C, Held A, Stange R, Nalesso G, Sherwood J, Hansen U, Godmann L, Echtermeyer F, Dell’Accio F, Pap T, Bertrand J. A4.11 Syndecan-4 is an important player in regulating the WNT signalling pathway in articular cartilage. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.93] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Harrach S, Edemir B, Schlatter E, Pap T, Ciarimboli G, Bertrand J. A8.23 Carrier-mediated transport systems for specific targeting of tyrosine kinase signalling pathways in rheumatoid arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.208] [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: 11/04/2022]
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Godmann L, König U, Stratis A, Cromme C, Neugebauer K, Herzog C, Korb-Pap A, Niederreiter B, Dankbar B, Redlich K, Echtermeyer F, Pap T, Bertrand J. A4.22 Syndecan-4 controls interleukin (IL)-1 receptor trafficking and IL-1 signalling in chronic destructive arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.104] [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: 11/03/2022]
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Gronau T, Hansen U, Seidler DG, Iozzo RV, Aszódi A, Prein C, Clausen-Schaumann H, Krüger K, Mooren FC, Bertrand J, Pap T, Bruckner P, Dreier R. A4.10 Forced exercise-induced osteoarthritis is attenuated in mice lacking the small leucine-rich proteoglycan decorin. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.92] [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: 11/04/2022]
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Cendret V, Legigan T, Mingot A, Thibaudeau S, Adachi I, Forcella M, Parenti P, Bertrand J, Becq F, Norez C, Désiré J, Kato A, Blériot Y. Synthetic deoxynojirimycin derivatives bearing a thiolated, fluorinated or unsaturated N-alkyl chain: identification of potent α-glucosidase and trehalase inhibitors as well as F508del-CFTR correctors. Org Biomol Chem 2015; 13:10734-44. [DOI: 10.1039/c5ob01526j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic DNJs bearing a thiolated, fluorinated or unsaturated N-substituent exhibit trehalase inhibition or F508del-CFTR correction.
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Déchelotte P, Savoye G, Coëffier M. P213: L’administration de glutamine par voie rectale modifie le profil d’expression colique des protéines ubiquitinées au cours d’une colite chez le rat : focus sur le métabolisme mitochondrial. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70855-6] [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]
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Kesmodel US, Kjaersgaard MIS, Denny CH, Bertrand J, Skogerbø Å, Eriksen HLF, Bay B, Underbjerg M, Mortensen EL. The association of pre-pregnancy alcohol drinking with child neuropsychological functioning. BJOG 2014; 122:1728-38. [PMID: 25395365 DOI: 10.1111/1471-0528.13172] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/12/2014] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To examine the effects of pre-pregnancy alcohol drinking on child neuropsychological functioning. DESIGN Prospective follow-up study. SETTING AND POPULATION 154 women and their children sampled from the Danish National Birth Cohort. METHODS Participants were sampled based on maternal alcohol consumption before pregnancy. At 5 years of age, the children were tested with the Wechsler Preschool and Primary Scale of Intelligence-Revised, the Test of Everyday Attention for Children at Five (TEACh-5), and the Movement Assessment Battery for Children (MABC). The Behaviour Rating Inventory of Executive Function (BRIEF) was completed by the mothers and a preschool teacher. Parental education, maternal IQ, prenatal maternal smoking, child's age at testing, child's sex, and maternal alcohol intake during pregnancy were considered potential confounders. MAIN OUTCOME MEASURES Performance on the Wechsler Preschool and Primary Scale of Intelligence-Revised, the TEACh-5, the MABC, and the BRIEF. RESULTS Intake of 15-21 drinks/week on average prior to pregnancy was not associated with any of the outcomes, but intake of ≥22 drinks/week on average was associated with a significantly lower adjusted mean full scale IQ and lower adjusted means in overall attention and sustained attention score, but not in selective attention score or any of the BRIEF index scores or MABC scores. CONCLUSIONS Intake of ≥22 drinks/week before pregnancy was associated with lower mean full scale IQ, overall attention and sustained attention. Assessment of pre-pregnancy drinking provides additional information regarding potential prenatal alcohol exposure and its implications for child neurodevelopment.
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Affiliation(s)
- U S Kesmodel
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - M I S Kjaersgaard
- Section of Biostatistics, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - C H Denny
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - J Bertrand
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Å Skogerbø
- Division of Psychiatry, University of Stavanger, Stavanger, Norway
| | - H-L F Eriksen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - B Bay
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - M Underbjerg
- Children's Neurocenter at Vejlefjord Rehabilitation Center, Stouby, Denmark
| | - E L Mortensen
- Institute of Public Health and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Savoye G, Déchelotte P, Coëffier M. PP281-SUN: Outstanding abstract: Glutamine Enema Regulates Colonic Ubiquitinated-Proteins but not Proteasome Activities During TNBS-Induced Colitis Leading to Increased Mitochondrial Activity. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50322-6] [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]
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Benard M, Straat K, Omarsdottir S, Leghmari K, Bertrand J, Davrinche C, Duga-Neulat I, Söderberg-Nauclér C, Rahbar A, Casper C. Human cytomegalovirus infection induces leukotriene B4 and 5-lipoxygenase expression in human placentae and umbilical vein endothelial cells. Placenta 2014; 35:345-50. [PMID: 24746852 DOI: 10.1016/j.placenta.2014.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 03/24/2014] [Accepted: 03/26/2014] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Human cytomegalovirus (HCMV) can cause congenital infection with risk of neurological disability. Maternal-fetal transmission is associated with placental inflammation. 5-lipoxygenase (5-LO) is the key enzyme in the biosynthesis of Leukotrienes (LTs), which are proinflammatory mediators. This study investigated the effect of HCMV infection on 5-LO expression and Leukotriene-B4 (LTB4) induction in human placentae and umbilical vein endothelial cells (HUVEC). METHODS Seven placentae from fetuses with congenital HCMV infection and brain damage and six controls were stained with HCMV-immediate-early-antigen (HCMV-IEA) and 5-LO by immunohistochemistry. 5-hydroxyeicosatetraenoic acid (5-HETE) and LTB4 were measured in culture supernatant from ex vivo HCMV-infected placental histocultures by liquid chromatography. In vitro, HCMV infected HUVEC cells were analyzed for 5-LO mRNA and protein expression by real time PCR and immunofluorescence staining. RESULTS HCMV-IEA was abundant in all HCMV infected placentae but absent in control placentae. 5-LO expression was higher in endothelial and smooth muscle cells of HCMV-infected placentae, compared to control placentae. HCMV infection induced an up-regulation of LTB4 in ex vivo placental explants with higher levels of LTB4 at 72 h compared to controls (p = 0.002). In vitro, 5-LO transcript and protein expression were significantly induced in HCMV-infected HUVEC, compared to the control cultures (p = 0.036). CONCLUSION The presence of HCMV coincided with high 5-LO expression in cells of in vivo HCMV infected placentae. HCMV induced up-regulation of 5-LO in both ex vivo HCMV-infected placental explants and HUVEC. HCMV induced LT-biosynthesis in congenitally infected placentae may have a role in pathogenesis of congenital HCMV disease.
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Affiliation(s)
- M Benard
- INSERM UMR 1043, Hospital Purpan, Paul Sabatier University, Toulouse 31024, France; Neonatal Unit, Children's Hospital, Toulouse 31059, France
| | - K Straat
- Department of Medicine, Solna Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, SE 171 76 Stockholm, Sweden
| | - S Omarsdottir
- Department of Medicine, Solna Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, SE 171 76 Stockholm, Sweden
| | - K Leghmari
- INSERM UMR 1043, Hospital Purpan, Paul Sabatier University, Toulouse 31024, France
| | - J Bertrand
- INSERM UMR U1048, I2MC, Hospital Purpan, Toulouse 31432, France
| | - C Davrinche
- INSERM UMR 1043, Hospital Purpan, Paul Sabatier University, Toulouse 31024, France
| | - I Duga-Neulat
- Department of Anatomopathology, Hospital Purpan, Toulouse 31059, France
| | - C Söderberg-Nauclér
- Department of Medicine, Solna Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, SE 171 76 Stockholm, Sweden
| | - A Rahbar
- Department of Medicine, Solna Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, SE 171 76 Stockholm, Sweden.
| | - C Casper
- INSERM UMR 1043, Hospital Purpan, Paul Sabatier University, Toulouse 31024, France; Neonatal Unit, Children's Hospital, Toulouse 31059, France; Department of Medicine, Solna Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, SE 171 76 Stockholm, Sweden.
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Bertrand J, Saint-Aubert B, Joly E, Philippe C, Quenet F, Carrere S, Rouanet P, Domergue J. [Impact of surgery in the management of pancreatic metastases of renal cell cancer]. Prog Urol 2014; 24:307-12. [PMID: 24674337 DOI: 10.1016/j.purol.2013.09.028] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 09/24/2013] [Accepted: 09/24/2013] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Incidence of renal cell carcinoma (RCC) is increasing over the 25 last years. Pancreatic metastases of RCC are rare. The aim of this work was to study overall survival of patients operated for pancreatic metastases of RCC in Montpellier cancer institute. PATIENTS AND METHODS Between 2000 and 2012, a retrospective monocentric study was performed at Montpellier cancer institute. We evaluated the outcomes of curative pancreatic metastases from renal primary and the impact of targeted therapies. RESULTS Thirty-eight patients were treated in our center for pancreatic metastases of RCC. Twelve patients had a curative surgery of metachronous pancreatic metastases. Four patients were without recurrence after pancreatic resection (33.3%). None had adjuvant therapy. Six patients were treated by targeted therapies, because of metastatic progression. Five of 6 died, the sixth evolved with targeted therapies by thyrosine kinase inhibitor. Average deadline between appearance of metastases and death was 89.9 months for operated patients. Average deadline between appearance of c metastases and death was 33.1 months for the others (P=0.004). CONCLUSION Surgical treatment of pancreatic metastases should increase life expectancy of patients. Others studies are necessary to prove the impact of targeted therapies in metastatics patients in this indication. LEVEL OF EVIDENCE 5.
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Affiliation(s)
- J Bertrand
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France.
| | - B Saint-Aubert
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - E Joly
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - C Philippe
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - F Quenet
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - S Carrere
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - P Rouanet
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
| | - J Domergue
- Institut du cancer de Montpellier (ICM), 208, avenue des Apothicaires, 34298 Montpellier cedex 5, France
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Ochoa-Cortes F, Guerrero-Alba R, Valdez-Morales EE, Spreadbury I, Barajas-Lopez C, Castro M, Bertrand J, Cenac N, Vergnolle N, Vanner SJ. Chronic stress mediators act synergistically on colonic nociceptive mouse dorsal root ganglia neurons to increase excitability. Neurogastroenterol Motil 2014; 26:334-45. [PMID: 24286174 DOI: 10.1111/nmo.12268] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 11/01/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Stress hormones can signal to colonic dorsal root ganglia (DRG) neurons and may play a role in sustained hyperexcitability of nociceptors. METHODS Mouse DRG neurons were exposed overnight to epinephrine (Epi) 5 nM and/or corticosterone (Cort) 1 μM or prior water-avoidance stress. Patch clamp recordings, visceromotor reflexes (VMRs) and molecular studies were conducted. KEY RESULTS Water-avoidance stress induced neuronal hyperexcitability. Incubation of DRG neurons in both Cort and Epi (but neither alone) induced hyperexcitability (rheobase decreased 51%, p < 0.05; action potential discharge increased 95%, p < 0.01); this was blocked by antagonists of the β2 adrenoreceptor (butoxamine, But) and Cort receptor (mifepristone) in combination or alone. Stress hormones enhanced voltage-gated Nav 1.7 currents (p < 0.05) and suppressed IA (p < 0.0001) and IK+ (p < 0.05) currents. Furthermore, stress hormones increased DRG β2 adrenoreceptor mRNA (59%, p = 0.007) and protein (125%, p < 0.05), also Nav 1.7 transcript (45%, p = 0.004) and protein (114%, p = 0.002). In whole-animal studies, the WAS hyperexcitability of DRG neurons was blocked by antagonists of the β2 and glucocorticoid receptors (GCR) but together they paradoxically increased VMRs to colorectal balloon distension. CONCLUSIONS & INFERENCES Stress mediators Epi and Cort activate β2 and GCR on DRG neurons which synergistically induce hyperexcitability of nociceptive DRG neurons and cause corresponding changes in voltage-gated Na(+) and K(+) currents. Furthermore, they increase the expression of β2 adrenoreceptors and Nav1.7 channels, suggesting transcriptional changes could contribute to sustained signaling following stress. The paradoxical effects of But and mifepristone in electrophysiological compared to VMR testing may reflect different peripheral and central actions on sensory signaling.
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Affiliation(s)
- F Ochoa-Cortes
- Gastrointestinal Diseases Research Unit, Kingston General Hospital, Queen's University School of Medicine, Kingston, ON, Canada
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Désiré J, Mondon M, Fontelle N, Nakagawa S, Hirokami Y, Adachi I, Iwaki R, Fleet GWJ, Alonzi DS, Twigg G, Butters TD, Bertrand J, Cendret V, Becq F, Norez C, Marrot J, Kato A, Blériot Y. N- and C-alkylation of seven-membered iminosugars generates potent glucocerebrosidase inhibitors and F508del-CFTR correctors. Org Biomol Chem 2014; 12:8977-96. [DOI: 10.1039/c4ob00325j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and biological evaluation of a library of novel seven-membered iminosugars is reported.
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Affiliation(s)
- J. Désiré
- UMR-CNRS7285
- IC2MP
- Equipe “Synthèse Organique”
- Groupe “Glycochimie”
- Université de Poitiers
| | - M. Mondon
- UMR-CNRS7285
- IC2MP
- Equipe “Synthèse Organique”
- Groupe “Glycochimie”
- Université de Poitiers
| | - N. Fontelle
- UMR-CNRS7285
- IC2MP
- Equipe “Synthèse Organique”
- Groupe “Glycochimie”
- Université de Poitiers
| | - S. Nakagawa
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194, Japan
| | - Y. Hirokami
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194, Japan
| | - I. Adachi
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194, Japan
| | - R. Iwaki
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194, Japan
| | - G. W. J. Fleet
- Chemistry Research Laboratory
- Oxford University
- Oxford OX1 3TA, UK
| | - D. S. Alonzi
- Oxford Glycobiology Institute
- Department of Biochemistry
- University of Oxford
- Oxford OX1 3QY, UK
| | - G. Twigg
- Oxford Glycobiology Institute
- Department of Biochemistry
- University of Oxford
- Oxford OX1 3QY, UK
| | - T. D. Butters
- Oxford Glycobiology Institute
- Department of Biochemistry
- University of Oxford
- Oxford OX1 3QY, UK
| | - J. Bertrand
- Institut de Physiologie et Biologie Cellulaires
- Université de Poitiers
- FRE 3511 CNRS
- 86022 Poitiers cedex, France
| | - V. Cendret
- UMR-CNRS7285
- IC2MP
- Equipe “Synthèse Organique”
- Groupe “Glycochimie”
- Université de Poitiers
| | - F. Becq
- Institut de Physiologie et Biologie Cellulaires
- Université de Poitiers
- FRE 3511 CNRS
- 86022 Poitiers cedex, France
| | - C. Norez
- Institut de Physiologie et Biologie Cellulaires
- Université de Poitiers
- FRE 3511 CNRS
- 86022 Poitiers cedex, France
| | - J. Marrot
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- 78035 Versailles cedex, France
| | - A. Kato
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194, Japan
| | - Y. Blériot
- UMR-CNRS7285
- IC2MP
- Equipe “Synthèse Organique”
- Groupe “Glycochimie”
- Université de Poitiers
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Goichon A, Bertrand J, Chan P, Lecleire S, Coquard A, Cailleux AF, Vaudry D, Déchelotte P, Coëffier M. O35 Analyse du protéome duodénal après apport entéral de protéines chez l’homme : augmentation de l’expression de protéines impliquées dans la structure cellulaire et la synthèse protéique. NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70307-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bertrand J, Goichon A, Chan P, Azhar S, Lecleire S, Donnadieu N, Vaudry D, Déchelotte P, Cailleux AF, Coëffier M. P205 La glutamine régule le niveau d’ubiquitination de deux protéines de stress, Grp-75 et hsp74, au niveau duodénal chez le volontaire sain. NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70536-3] [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: 11/28/2022]
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Bertrand J, Bôle-Feysot C, Guérin C, Gouteux M, Déchelotte P, Ducrotté P, Coëffier M. PP116-SUN DOES GLUTAMINE RESTORE TIGHT JUNCTION PROTEIN EXPRESSION DURING DIARRHEA-PREDOMINANT IRRITABLE BOWEL SYNDROME? Clin Nutr 2013. [DOI: 10.1016/s0261-5614(13)60161-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sherwood J, Nalesso G, Bertrand J, Achan P, Brandolini L, Pap T, Pitzalis C, Dell’Accio F. THU0023 A novel role for ELR+ CXC chemokine signaling in cartilage homeostasis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1988] [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: 11/04/2022]
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Cromme C, Rüter C, Scharnert J, Kollias G, Schmidt M, Pap T, Bertrand J. FRI0033 The inhibitory effects of the yersinia outer protein m (YOPM) on osteoclastogenesis and bone destruction. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Umlauf D, Hidding H, Lindemann L, Frank S, Dankbar B, Cromme C, Rupp M, Stange R, Marshall R, Amling M, Dietrich A, Steiner M, Kornak U, Schwab A, Pap T, Bertrand J. OP0041 Essential role for TRPC1 channels in osteoclast fusion and in osteoporotic bone loss. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1724] [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: 11/04/2022]
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Bertrand J, Stange R, Hidding H, Echtermeyer F, Nalesso G, Godmann L, Dell’Accio F, Pap T, Dreier R. AB0126 Regulation of embryonic bone development and fracture repair by SYNDECAN-4. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Godmann L, Stratis A, Cromme C, Frank Echtermeyer E, Pap T, Bertrand J. FRI0044 IL-1 dependent SYNDECAN-4 signal transduction is mediated by its heparan sulfate side chains in RA synovial fibroblasts. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Cooper C, Vasilaki A, McArdle A, Jackson MJ, Belluantono I, Bruce I, Rahman A, Muller-Ladner U, Gullick NJ, Jordan K, Steultjens M, van der Esch M, Brandon M, Dures E, Hewlett S, Ambler N, Goodchild C, Hale E, Morris M, Fraser B, Cooper C, Dasgupta B, Mallen C, Mason J, Mackie S, Helliwell P, Van den Berg W, Bertrand J, Dell'Accio F, Vincent T, Snowden N, Devakumar V, Shenker N, Guest L, Bosworth A, Corrigan P, Ainsworth P, Lowe WA, Adams J, Protheroe J, Robinson S, Adebajo A, Bowen C, Siddle H, Brandon M, Hall A. Ageing and the Musculoskeletal System * I75. Musculoskeletal Ageing: From Epidemiology to Clinical Trials. Rheumatology (Oxford) 2013. [DOI: 10.1093/rheumatology/ket193] [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: 11/13/2022] Open
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Sherwood J, Bertrand J, Nalesso G, Achan P, Pitzalis C, Pap T, Dell’Accio F. A8.17 The Role of CXCR2 Signalling in Articular Cartilage Homeostasis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-203222.17] [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: 11/04/2022]
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Coulombe J, Bertrand J, Lavoie M, Lessard M, Leclerc G, Dupéré A. [Pyoderma vegetans due to Candida albicans: successful treatment with itraconazole]. Ann Dermatol Venereol 2012; 139:836-7. [PMID: 23237284 DOI: 10.1016/j.annder.2012.06.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 06/06/2012] [Accepted: 06/28/2012] [Indexed: 11/28/2022]
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Bertrand J, Rueter C, Cromme C, Scharnert J, Schmidt A, Pap T. The bacterial effector protein YopM reduces rheumatoid arthritis (RA) outcome by inhibiting inflammation and bone destruction. Arthritis Res Ther 2012. [PMCID: PMC3332443 DOI: 10.1186/ar3609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Eriksen HLF, Mortensen EL, Kilburn T, Underbjerg M, Bertrand J, Støvring H, Wimberley T, Grove J, Kesmodel US. The effects of low to moderate prenatal alcohol exposure in early pregnancy on IQ in 5-year-old children. BJOG 2012; 119:1191-200. [PMID: 22712749 PMCID: PMC4471997 DOI: 10.1111/j.1471-0528.2012.03394.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To examine the effects of low to moderate maternal alcohol consumption during early pregnancy on children's intelligence (IQ) at age 5 years. DESIGN Prospective follow-up study. SETTING Neuropsychological testing in four Danish cities 2003-2008. POPULATION A cohort of 1628 women and their children sampled from the Danish National Birth Cohort. METHODS Participants were sampled based on maternal alcohol consumption during pregnancy. At 5 years of age, children were tested with the Wechsler Preschool and Primary Scale of Intelligence-Revised (WPPSI-R). Parental education, maternal IQ, maternal smoking in pregnancy, the child's age at testing, gender, and tester were considered core confounding factors, whereas the full model also controlled for maternal binge drinking, age, BMI, parity, home environment, postnatal smoking in the home, health status, and indicators for hearing and vision impairments. MAIN OUTCOME MEASURES The WPPSI-R. RESULTS No differences in test performance were observed between children whose mothers reported consuming between one and four or between five and eight drinks per week at some point during pregnancy, compared with children of mothers who abstained. For women who reported consuming nine or more drinks per week no differences were observed for mean differences; however, the risks of low full-scale IQ (OR 4.6; 95% CI 1.2-18.2) and low verbal IQ (OR 5.9; 95% CI 1.4-24.9) scores, but not low performance IQ score, were increased. CONCLUSIONS Maternal consumption of low to moderate quantities of alcohol during pregnancy was not associated with the mean IQ score of preschool children. Despite these findings, acceptable levels of alcohol use during pregnancy have not yet been established, and conservative advice for women continues to be to avoid alcohol use during pregnancy.
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Affiliation(s)
- H-L Falgreen Eriksen
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark
| | - EL Mortensen
- Institute of Public Health and Centre for Healthy Ageing, University of Copenhagen, Copenhagen, Denmark
| | - T Kilburn
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark
| | - M Underbjerg
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark
- Children’s Neurocentre at Vejlefjord Rehabilitation Centre, Vejle, Denmark
| | - J Bertrand
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - H Støvring
- Department of Public Health, Section of Biostatistics, Aarhus University, Aarhus, Denmark
| | - T Wimberley
- Department of Public Health, Section of Biostatistics, Aarhus University, Aarhus, Denmark
| | - J Grove
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Faculty of Health Sciences and Bioinformatics Research Centre (BiRC), Aarhus University, Aarhus, Denmark
| | - US Kesmodel
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, Aarhus, Denmark
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Affiliation(s)
- J Bertrand
- Institut für Experimentelle Muskuloskelettale Medizin, Universitätsklinikum Münster.
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Godmann L, Pap T, Bertrand J. Pathogenetisch orientierte Therapieansätze bei der Osteoarthrose – Sind DMOADs in der Pipeline? AKTUEL RHEUMATOL 2012. [DOI: 10.1055/s-0032-1314795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- L. Godmann
- Institut für Experimentelle Muskuloskelettale Medizin, Universitätsklinikum Münster, Münster
| | - T. Pap
- Institut für Experimentelle Muskuloskelettale Medizin, Universitätsklinikum Münster, Münster
| | - J. Bertrand
- Institut für Experimentelle Muskuloskelettale Medizin, Universitätsklinikum Münster, Münster
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Kesmodel US, Bertrand J, Støvring H, Skarpness B, Denny CH, Mortensen EL. The effect of different alcohol drinking patterns in early to mid pregnancy on the child's intelligence, attention, and executive function. BJOG 2012; 119:1180-90. [PMID: 22712700 DOI: 10.1111/j.1471-0528.2012.03393.x] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To conduct a combined analysis of the estimated effects of maternal average weekly alcohol consumption, and any binge drinking, in early to mid pregnancy on general intelligence, attention, and executive function in 5-year-old children. DESIGN Follow-up study. SETTING Neuropsychological testing in four Danish cities 2003-2008. POPULATION A cohort of 1628 women and their children sampled from the Danish National Birth Cohort. METHODS Participants were sampled based on maternal alcohol consumption during early pregnancy. At age 5 years, the children were tested for general intelligence, attention, and executive function. The three outcomes were analysed together in a multivariate model to obtain joint estimates and P values for the association of alcohol across outcomes. The effects of low to moderate alcohol consumption and binge drinking in early pregnancy were adjusted for a wide range of potential confounding factors. MAIN OUTCOME MEASURES Wechsler Preschool and Primary Scale of Intelligence-Revised (WPPSI-R), the Test of Everyday Attention for Children at Five (TEACh-5), and the Behavior Rating Inventory of Executive Functions (BRIEF) scores. RESULTS Multivariate analyses showed no statistically significant effects arising from average weekly alcohol consumption or any binge drinking, either individually or in combination. These results replicate findings from separate analyses of each outcome variable. CONCLUSIONS The present study contributes comprehensive methodological and statistical approaches that should be incorporated in future studies of low to moderate alcohol consumption and binge drinking during pregnancy. Furthermore, as no safe level of drinking during pregnancy has been established, the most conservative advice for women is not to drink alcohol during pregnancy. However, the present study suggests that small volumes consumed occasionally may not present serious concern.
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Affiliation(s)
- U S Kesmodel
- Department of Public Health, Section of Epidemiology, Aarhus University, Aarhus, Denmark.
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Skogerbø Å, Kesmodel US, Wimberley T, Støvring H, Bertrand J, Landrø NI, Mortensen EL. The effects of low to moderate alcohol consumption and binge drinking in early pregnancy on executive function in 5-year-old children. BJOG 2012; 119:1201-10. [PMID: 22712874 DOI: 10.1111/j.1471-0528.2012.03397.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To examine the effects of low to moderate maternal alcohol consumption and binge drinking in early pregnancy on children's executive functions at the age of 5 years. DESIGN Follow-up study. SETTING Neuropsychological testing in four Danish cities 2003-2008. Population A cohort of 1628 women and their children sampled from the Danish National Birth Cohort. METHODS Participants were sampled based on maternal alcohol drinking patterns during early pregnancy. When the children were 5 years old, the parent and teacher forms of the Behaviour Rating Inventory of Executive Function (BRIEF) were completed by the mothers and a preschool teacher. Parental education, maternal IQ, prenatal maternal smoking, the child's age at testing, and the child's gender were considered core confounding factors. The full model also included maternal binge drinking or low to moderate alcohol consumption, maternal age, parity, maternal marital status, family home environment, postnatal parental smoking, pre-pregnancy maternal body mass index (BMI), and the health status of the child. MAIN OUTCOME MEASURES The BRIEF parent and teacher forms. RESULTS Adjusted for all potential confounding factors, no statistically significant associations between maternal low to moderate average weekly consumption and BRIEF index scores were observed.In adjusted analyses, binge drinking in gestational week 9 or later was significantly associated with elevated Behavioural Regulation Index parent Scores (2.04, 95% CI 0.33–3.76), and with the risk of high scores on the Metacognitive Index assessed by the teacher (OR 2.06, 95% CI 1.01–4.23) [corrected]. CONCLUSIONS This study did not observe significant effects of low to moderate alcohol consumption during pregnancy on executive functioning at the age of 5 years. Furthermore, only weak and no consistent associations between maternal binge drinking and executive functions were observed.
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Affiliation(s)
- Å Skogerbø
- Institute of Public Health, University of Copenhagen, Denmark
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