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Middleton KK, Muller B, Araujo PH, Fujimaki Y, Rabuck SJ, Irrgang JJ, Tashman S, Fu FH. Is the native ACL insertion site "completely restored" using an individualized approach to single-bundle ACL-R? Knee Surg Sports Traumatol Arthrosc 2015; 23:2145-2150. [PMID: 24825174 DOI: 10.1007/s00167-014-3043-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 04/25/2014] [Indexed: 11/30/2022]
Abstract
PURPOSE The goal of individualized anatomic anterior cruciate ligament reconstruction (ACL-R) is to reproduce each patient's native insertion site as closely as possible. The amount of the native insertion site that is recreated by the tunnel aperture area is currently unknown, as are the implications of the degree of coverage. As such, the goals of this study are to determine whether individualized anatomic ACL-R techniques can maximally fill the native insertion site and to attempt to establish a crude measure to evaluate the percentage of reconstructed area as a first step towards elucidating the implications of complete footprint restoration. METHODS This is a prospective pilot study of 45 patients who underwent primary single-bundle anatomic ACL-R from May 2011 to April 2012. Length and width of the native insertion site were measured intraoperatively. Using published guidelines, reconstruction technique and graft choice were determined to maximize the percentage of reconstructed area. Native femoral and tibial insertion site area and femoral tunnel aperture area were calculated using the formula for area of an ellipse. On the tibial side, tunnel aperture area was calculated with respect to drill diameter and drill guide angle. Percentage of reconstructed area was calculated by dividing total tunnel aperture area by the native insertion site area. RESULTS The mean areas for the native femoral and tibial insertion sites were 83 ± 20 and 125 ± 20 mm(2), respectively. The mean tunnel aperture area for the femoral side was 65 ± 17, and 86 ± 17 mm(2) for the tibial tunnel aperture area. On average, percentage of reconstructed area was 79 ± 13 % for the femoral side, and 70 ± 12 % for the tibial side. CONCLUSION Anatomic ACL-R does not restore the native insertion site in its entirety. Percentage of reconstructed area serves as a rudimentary tool for evaluating the degree of native insertion site coverage using current individualized anatomic techniques and provides a starting point from which to evaluate the clinical significance of complete footprint restoration. LEVEL OF EVIDENCE IV.
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Coste F, Toussaint C, Dubois M, Courtois A, Guibert C, Marthan R, Savineau J, Muller B, Freund-Michel V. Reversal of experimental severe pulmonary hypertension by NGF inhibition. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2015.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Muller B, Reinartz SM, van Egmond D, de Groot EJJ, Fokkens WJ, van Drunen CM. Mono-allergic and poly-allergic rhinitis patients have comparable numbers of mucosal Foxp3+CD4+ T lymphocytes. Rhinology 2014; 52:260-6. [PMID: 25271532 DOI: 10.4193/rhino13.223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND We previously found that allergic rhinitis patients with an isolated pollen sensitization responded more strongly to a nasal provocation with grass pollen (GP) than patients who had an additional house dust mite (HDM) sensitization. To elucidate this phenomenon, we investigated the dynamics of Foxp3+CD4+ T lymphocytes in allergic rhinitis patients with distinct allergen sensitizations. METHODS Three groups of allergic rhinitis patients with skin prick test confirmed allergic sensitizations were investigated and compared to 14 healthy controls: 14 subjects with an isolated grass pollen sensitization (Mono-GP); 9 subjects with isolated housedust mite sensitization (Mono-HDM); 29 subjects with grass pollen and house dust mite sensitization (poly-sensitized). Subjects in the Mono-GP group were challenged with grass pollen extract, subjects in the Mono-HDM group were challenged with house dust mite extract, subjects in the poly-sensitized group and the healthy controls were randomly challenged with either grass pollen or house dust mite. Nasal biopsies were taken before and after nasal provocation. We compared the distribution of FoxP3+CD4+ cells in nasal biopsies before and after nasal provocation using immunohistochemistry. RESULTS There was no difference in the number of FoxP3+CD4+ cells between healthy and the three allergic groups at baseline.Nasal provocation did result in an increase in eosinophils in the three allergic groups, but did not result in a change in the number of FoxP3+CD4+ cells in any of the groups or induced differences between any of the groups. CONCLUSION Clinical differences in the response between mono-GP and multiple-sensitized allergic individuals are not related to differences in the number of regulatory T cells in the nasal mucosa.
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Heydarchi B, Center R, Ramarathinam S, Gonelli C, Muller B, Mackenzie C, Cuthbertson J, Kramski M, Purcell DF. Chimeric Bovine-V-region and Human-C-region mAbs with Long and Extensively Mutated CDHR3 Domains Bind HIV-1 Env gp140 Trimers, but Not gp120 Monomer. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5234b.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Coste F, Toussaint C, Dubois M, Courtois A, Guibert C, Marthan R, Savineau JP, Muller B, Freund-Michel V. Role of the nerve growth factor NGF in severe pulmonary hypertension. Rev Mal Respir 2014. [DOI: 10.1016/j.rmr.2014.04.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hofbauer M, Muller B, Murawski CD, van Eck CF, Fu FH. The concept of individualized anatomic anterior cruciate ligament (ACL) reconstruction. Knee Surg Sports Traumatol Arthrosc 2014; 22:979-86. [PMID: 23740328 DOI: 10.1007/s00167-013-2562-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 05/29/2013] [Indexed: 01/20/2023]
Abstract
PURPOSE To describe the concept of individualized anatomic anterior cruciate ligament (ACL) reconstruction. METHODS The PubMed/Medline database was searched using keywords pertaining to ACL reconstruction. Relevant articles were reviewed in order to summarize important concepts of individualized surgery in ACL reconstruction. Surgical experiences with case examples are also highlighted. RESULTS Individualized ACL surgery allows for the customization of surgery to each individual patient. Accounting for graft selection and other characteristics such as anatomy, lifestyle and activity preferences may provide the patient with the best potential for a successful outcome. The surgeon should be comfortable with a variety of graft harvests and surgical techniques when practicing individualized surgery. CONCLUSION Individualized anatomic ACL reconstruction is founded on the objective evaluation of functional anatomy and individual characteristics, thereby restoring the ACL as closely as possible to the native anatomy and function. The adoption and subsequent use of individualized surgery may facilitate improved clinical as well as objective outcomes, particularly in the long term. LEVEL OF EVIDENCE V.
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Muller B, Reinartz S, van Egmond D, de Groot E, Fokkens W, van Drunen C. Mono-allergic and poly-allergic rhinitis patients have comparable numbers of mucosal Foxp3+CD4+ T lymphocytes. Rhinology 2014. [DOI: 10.4193/rhin13.223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ohresser P, Otero E, Choueikani F, Chen K, Stanescu S, Deschamps F, Moreno T, Polack F, Lagarde B, Daguerre JP, Marteau F, Scheurer F, Joly L, Kappler JP, Muller B, Bunau O, Sainctavit P. DEIMOS: a beamline dedicated to dichroism measurements in the 350-2500 eV energy range. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:013106. [PMID: 24517744 DOI: 10.1063/1.4861191] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The DEIMOS (Dichroism Experimental Installation for Magneto-Optical Spectroscopy) beamline was part of the second phase of the beamline development at French Synchrotron SOLEIL (Source Optimisée de Lumière à Energie Intermédiaire du LURE) and opened to users in March 2011. It delivers polarized soft x-rays to perform x-ray absorption spectroscopy, x-ray magnetic circular dichroism, and x-ray linear dichroism in the energy range 350-2500 eV. The beamline has been optimized for stability and reproducibility in terms of photon flux and photon energy. The main end-station consists in a cryo-magnet with 2 split coils providing a 7 T magnetic field along the beam or 2 T perpendicular to the beam with a controllable temperature on the sample from 370 K down to 1.5 K.
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Ohresser P, Otero E, Choueikani F, Stanescu S, Deschamps F, Ibis L, Moreno T, Polack F, Lagarde B, Marteau F, Scheurer F, Joly L, Kappler JP, Muller B, Sainctavit P. Polarization characterization on the DEIMOS beamline using dichroism measurements. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/425/21/212007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hofbauer M, Muller B, Murawski CD, Karlsson J, Fu FH. Innovation in orthopaedic surgery as it relates to evidence-based practice. Knee Surg Sports Traumatol Arthrosc 2013; 21:511-4. [PMID: 23287893 DOI: 10.1007/s00167-012-2360-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Delaney JR, Ahmed U, Chou A, Sim S, Carr D, Murakami CJ, Schleit J, Sutphin GL, An EH, Castanza A, Fletcher M, Higgins S, Jelic M, Klum S, Muller B, Peng ZJ, Rai D, Ros V, Singh M, Wende HV, Kennedy BK, Kaeberlein M. Stress profiling of longevity mutants identifies Afg3 as a mitochondrial determinant of cytoplasmic mRNA translation and aging. Aging Cell 2013; 12:156-66. [PMID: 23167605 DOI: 10.1111/acel.12032] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2012] [Indexed: 01/05/2023] Open
Abstract
Although environmental stress likely plays a significant role in promoting aging, the relationship remains poorly understood. To characterize this interaction in a more comprehensive manner, we examined the stress response profiles for 46 long-lived yeast mutant strains across four different stress conditions (oxidative, ER, DNA damage, and thermal), grouping genes based on their associated stress response profiles. Unexpectedly, cells lacking the mitochondrial AAA protease gene AFG3 clustered strongly with long-lived strains lacking cytosolic ribosomal proteins of the large subunit. Similar to these ribosomal protein mutants, afg3Δ cells show reduced cytoplasmic mRNA translation, enhanced resistance to tunicamycin that is independent of the ER unfolded protein response, and Sir2-independent but Gcn4-dependent lifespan extension. These data demonstrate an unexpected link between a mitochondrial protease, cytoplasmic mRNA translation, and aging.
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Mizrahi M, Shabat Y, Ben Ya'acov A, Lalazar G, Adar T, Wong V, Muller B, Rawlin G, Ilan Y. Alleviation of insulin resistance and liver damage by oral administration of Imm124-E is mediated by increased Tregs and associated with increased serum GLP-1 and adiponectin: results of a phase I/II clinical trial in NASH. J Inflamm Res 2012; 5:141-50. [PMID: 23293533 PMCID: PMC3534391 DOI: 10.2147/jir.s35227] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Nonalcoholic steatohepatitis (NASH) is considered to be part of the nonalcoholic fatty liver disorders and its incidence is increasing. Imm124-E (Immuron Ltd, Melbourne, Australia), containing hyperimmune bovine colostrum, has been shown to exert an immunomodulatory effect and to alleviate target organ damage in animal models of NASH. The aim of our study was to determine the safety and efficacy of oral administration of Imm124-E to patients with insulin resistance and NASH. Methods In an open-label trial, ten patients with biopsy-proven NASH and insulin resistance were orally treated with Imm124-E for 30 days. Results Oral administration of Imm124-E was safe, and no side effects were noted. Alleviation of insulin resistance was reflected by significantly improved hemoglobin A1c (HbA1c) values in all ten treated patients. For between five and eight responders, the following effects were noted: a decrease in fasting glucose levels; improved oral glucose tolerance test (OGGT) and homeostatic model assessment insulin resistance (HOMA) scores; and alleviation in lipid profile. These effects were accompanied by increased serum levels of glucagon-like peptide 1 (GLP-1), adiponectin and T regulatory cells. Conclusion Hyperimmune colostrum alleviates NASH.
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Skeie GO, Muller B, Haugarvoll K, Larsen JP, Tysnes OB. Parkinson disease: associated disorders in the Norwegian population based incident ParkWest study. Parkinsonism Relat Disord 2012; 19:53-5. [PMID: 22841686 DOI: 10.1016/j.parkreldis.2012.07.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 06/21/2012] [Accepted: 07/06/2012] [Indexed: 11/16/2022]
Abstract
Parkinson's disease (PD) may be associated with a number of different diseases due to common risk factors or overlapping symptomatology. We have asked for possible associated disorders in a Norwegian population of incident PD patients and controls, the Norwegian ParkWest study. The patients were diagnosed according to the Gelb criteria. 212 incident PD patients and 175 age and gender matched controls were included. PD patients and controls were asked for information on earlier medical history and family history. PD patients had a higher frequency of self-reported symptoms of depression (p = 0.003) and anxiety disorders (p = 0.004) before baseline. They tended to have a higher frequency of diabetes (p = 0.09) and had a higher frequency of prior stroke or TIA (p = 0.004).
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Bromhead D, Clarke S, Hoyle S, Muller B, Sharples P, Harley S. Identification of factors influencing shark catch and mortality in the Marshall Islands tuna longline fishery and management implications. JOURNAL OF FISH BIOLOGY 2012; 80:1870-1894. [PMID: 22497410 DOI: 10.1111/j.1095-8649.2012.03238.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Recent average annual catches of sharks by tuna longline vessels fishing in the Republic of the Marshall Islands (RMI) are estimated to be between 1583 and 2274 t. Although 22 shark species have been recorded by the observer programme for this fishery, 80% of the annual catch comprises only five species: blue shark Prionace glauca, silky shark Carcharhinus falciformis, bigeye thresher shark Alopias superciliosus, pelagic thresher shark Alopias pelagicus and oceanic whitetip shark Carcharhinus longimanus. Wire leaders (i.e. branch lines or traces) were also used by nearly all observed vessels. Generalized additive model (GAM)-based analyses of catch rates indicated that P. glauca and A. superciliosus are caught in higher numbers when vessels fish in relatively cooler waters, at night, close to the full moon, when the 27° C thermocline is close to the surface and during El Niño conditions. In contrast, C. falciformis, A. pelagicus and C. longimanus are caught in higher numbers when shark lines are used (all three species) or hooks are set at a shallow depth (A. pelagicus and C. longimanus and, also, P. glauca). These findings are generally consistent with current knowledge of these species' habitat preferences, movement and distribution. The results of these analyses were combined with information pertaining to shark condition and fate upon capture to compare the likely effectiveness of a range of potential measures for reducing shark mortality in the longline fishery. Of the options considered, the most effective would be to combine measures that reduce the catch rate (e.g. restrictions on the use of wire leaders, shark baits and shark lines) with measures that increase survival rates after post-capture release (e.g. finning bans).
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Adar T, Ben Ya'acov A, Lalazar G, Lichtenstein Y, Nahman D, Mizrahi M, Wong V, Muller B, Rawlin G, Ilan Y. Oral administration of immunoglobulin G-enhanced colostrum alleviates insulin resistance and liver injury and is associated with alterations in natural killer T cells. Clin Exp Immunol 2012; 167:252-60. [PMID: 22236001 DOI: 10.1111/j.1365-2249.2011.04511.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Insulin resistance and metabolic syndrome are chronic inflammatory conditions that lead to hepatic injury and non-alcoholic steatohepatitis (NASH). Bovine colostrum has therapeutic effects in a variety of chronic infections. However its effectiveness in NASH was never studied. Natural killer T (NKT) cells have been shown to be associated with some of the pathological and metabolic abnormalities accompanying NASH in leptin-deficient (ob/ob) mice. In the present study, we used hyperimmune bovine colostrum to treat hepatic injury and insulin resistance and we also assessed the effects on NKT cells. We used ob/ob mice that were fed for 6 weeks with either 0·1 mg bovine colostrum prepared from non-immunized cows, 0·1 mg hyperimmune colostrum raised against a bacterial lipopolysaccharide (LPS) extract or 0·001, 0·1 or 1 mg of immunoglobulin (Ig)G purified from hyperimmune colostrum (IgG-LPS). NKT cells were phenotyped by flow cytometry, and hepatic injury and insulin resistance were assessed by measuring fasting glucose levels, glucose tolerance tests and liver enzymes. Fat accumulation was measured in the liver and plasma. Oral administration of hyperimmune colostrums decreased alanine aminotransferase (ALT) serum levels and serum triglycerides compared to controls. Glucose intolerance was also improved by the hyperimmune colostrum preparations. These results were accompanied by a decrease in serum tumour necrosis factor (TNF)-α levels following oral treatment with 0·1 or 1 mg of IgG-LPS. The beneficial effects of hyperimmune colostrums were associated with an increase in the number of splenic NKT cells. These data suggest that oral administration of hyperimmune colostrum preparations can alleviate chronic inflammation, liver injury and insulin resistance associated with NASH.
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Schwappach DLB, Frank O, Koppenberg J, Muller B, Wasserfallen JB. Patients' and healthcare workers' perceptions of a patient safety advisory. Int J Qual Health Care 2011; 23:713-20. [DOI: 10.1093/intqhc/mzr062] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sarr M, Sar FB, Gueye L, Kane MO, Wele A, Diallo AS, Schini-Kerth V, Muller B. The vascular endothelium masks the persistent inhibition of rat thoracic arterial tone induced by S-nitrosoglutathione. Cardiovasc J Afr 2011; 22:7-13. [PMID: 21298199 PMCID: PMC3734762 DOI: 10.5830/cvja-2010-008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 03/10/2010] [Indexed: 02/04/2023] Open
Abstract
AIM In endothelium-denuded arteries, the nitric oxide (NO) donor S-nitrosoglutathione (GSNO) induced a persistent hypo-reactivity to vasoconstrictors, and low-molecular weight thiols such as N-acetyl cysteine (NAC) produced a relaxant effect. These effects were attributed to the formation of vascular NO stores. In arteries with a functional endothelium, such long-lasting effects on arterial tone have not been well characterised. In this study, we proposed to examine the possibility of storing exogenous NO when the vascular endothelium is still able to produce its own NO. METHODS For this purpose, changes in isometric tension of isolated arteries were assessed in organ chambers, and nitrosothiol formation was characterised by confocal microscopy. RESULTS In rat aortic rings with endothelium pre-exposed to GSNO, the contractile response to norepinephrine (NE) was not attenuated in comparison with control rings, but NAC induced a relaxant effect. However, an attenuation of the response to NE was observed in GSNO-exposed, intact aortic rings after inhibition of NO synthase by N(ω)-nitro-L-arginine methylester (L-AME) or in GSNO-denuded rings. The relaxing effects of NAC were due to the mobilisation of NO from nitrosothiols after nitrosylation of protein SH residues. Moreover, the hypo-reactivity to NE and the relaxant effect of NAC were abolished by 1H-[1,2,4] oxadiazolo(4,3-a)quinoxalin-1-one (ODQ), an inhibitor of soluble guanylyl cyclase, and partially by the K+-sensitive channel inhibitor tetra-ethyl-ammonium (TEA). CONCLUSION These data show that endothelium-derived NO masked the persistent effect of GSNO in rat thoracic aorta. However, the ability of GSNO to form releasable NO stores without altering the vascular tone can be particularly useful in preventing endothelial dysfunction in which NO formation decreases.
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Lagomarsino S, Fonzo SD, Jark W, Muller B, Cedola A, Pelka G. Interference Effects In X-Ray Specular Reflectivity from Thin Films. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-382-381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTA strong resonance effect in the specular reflectivity of a C layer deposited on a Ni surface has been measured. The e.m. field intensity distribution has been monitored by measuring the fluorescence intensity of an ultra-thin Ti layer placed in the C film. The reflected intensity and the fluorescence yield of Ti and Ar (this last trapped in the film because of the deposition by sputtering) have been measured in different samples with a different location of the Ti layer. The results show that with this method a nondestructive, accurate determination of the Ti position can be achieved with a relative accuracy of 10−2
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Niedhammer I, David S, Degioanni S, Drummond A, Philip P, Acquarone D, Aicardi F, André-Mazeaud P, Arsento M, Astier R, Baille H, Bajon-Thery F, Barre E, Basire C, Battu JL, Baudry S, Beatini C, Beaud'huin N, Becker C, Bellezza D, Beque C, Bernstein O, Beyssier C, Blanc-Cascio F, Blanchet N, Blondel C, Boisselot R, Bordes-Dupuy G, Borrelly N, Bouhnik D, Boulanger MF, Boulard J, Bourreau P, Bourret D, Boustière AM, Breton C, Bugeon G, Buono-Michel M, Canonne JF, Capella D, Cavin-Rey M, Cervoni C, Charreton D, Charrier D, Chauvin MA, Chazal B, Cougnot C, Cuvelier G, Dalivoust G, Daumas R, Debaille A, De Bretteville L, Delaforge G, Delchambre A, Domeny L, Donati Y, Ducord-Chapelet J, Duran C, Durand-Bruguerolle D, Fabre D, Faivre A, Falleri R, Ferrando G, Ferrari-Galano J, Flutet M, Fouché JP, Fournier F, Freyder E, Galy M, Garcia A, Gazazian G, Gérard C, Girard F, Giuge M, Goyer C, Gravier C, Guyomard A, Hacquin MC, Halimi E, Ibagnes T, Icart P, Jacquin MC, Jaubert B, Joret JP, Julien JP, Kacel M, Kesmedjian E, Lacroix P, Lafon-Borelli M, Lallai S, Laudicina J, Leclercq X, Ledieu S, Leroy J, Leroyer L, Loesche F, Londi D, Longueville JM, Lotte MC, Louvain S, Lozé M, Maculet-Simon M, Magallon G, Marcelot V, Mareel MC, Martin P, Masse AM, Méric M, Milliet C, Mokhtari R, Monville AM, Muller B, Obadia G, Pelser M, Peres L, Perez E, Peyron M, Peyronnin F, Postel S, Presseq P, Pyronnet E, Quinsat C, Raulot-Lapointe H, Rigaud P, Robert F, Robert O, Roger K, Roussel A, Roux JP, Rubini-Remigy D, Sabaté N, Saccomano-Pertus C, Salengro B, Salengro-Trouillez P, Samsom E, Sendra-Gille L, Seyrig C, Stoll G, Tarpinian N, Tavernier M, Tempesta S, Terracol H, Torresani F, Triglia MF, Vandomme V, Vieillard F, Vilmot K, Vital N. Workplace bullying and psychotropic drug use: the mediating role of physical and mental health status. ACTA ACUST UNITED AC 2010; 55:152-63. [PMID: 21177264 DOI: 10.1093/annhyg/meq086] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES The association between workplace bullying and psychotropic drug use is not well established. This study was aimed at exploring the association between workplace bullying, and its characteristics, and psychotropic drug use and studying the mediating role of physical and mental health. METHODS The study population consisted of a random sample of 3132 men and 4562 women of the working population in the south-east of France. Workplace bullying, evaluated using the validated instrument elaborated by Leymann, and psychotropic drug use, as well as covariates, were measured using a self-administered questionnaire. Covariates included age, marital status, presence of children, education, occupation, working hours, night work, physico-chemical exposures at work, self-reported health, and depressive symptoms. Statistical analysis was performed using logistic regression analysis and was carried out separately for men and women. RESULTS Workplace bullying was strongly associated with psychotropic drug use. Past exposure to bullying increased the risk for this use. The more frequent and the longer the exposure to bullying, the stronger the association with psychotropic drug use. Observing bullying on someone else at the workplace was associated with psychotropic drug use. Adjustment for covariates did not modify the results. Additional adjustment for self-reported health and depressive symptoms reduced the magnitude of the associations, especially for men. CONCLUSIONS The association between bullying and psychotropic drug use was found to be significant and strong and was partially mediated by physical and mental health.
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Ng WC, Wong V, Muller B, Rawlin G, Brown LE. Prevention and treatment of influenza with hyperimmune bovine colostrum antibody. PLoS One 2010; 5:e13622. [PMID: 21049034 PMCID: PMC2964324 DOI: 10.1371/journal.pone.0013622] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Accepted: 10/02/2010] [Indexed: 12/22/2022] Open
Abstract
Background Despite the availability of specific vaccines and antiviral drugs, influenza continues to impose a heavy toll on human health worldwide. Passive transfer of specific antibody (Ab) may provide a useful means of preventing or treating disease in unvaccinated individuals or those failing to adequately seroconvert, especially now that resistance to antiviral drugs is on the rise. However, preparation of appropriate Ab in large scale, quickly and on a yearly basis is viewed as a significant logistical hurdle for this approach to control seasonal influenza. Methodology/Principal Findings In this study, bovine colostrum, which contains approximately 500 g of IgG per milking per animal, has been investigated as a source of polyclonal antibody for delivery to the respiratory tract. IgG and F(ab')2 were purified from the hyperimmune colostrum of cows vaccinated with influenza A/Puerto Rico/8/34 (PR8) vaccine and were shown to have high hemagglutination-inhibitory and virus-neutralizing titers. In BALB/c mice, a single administration of either IgG or F(ab')2 could prevent the establishment of infection with a sublethal dose of PR8 virus when given as early as 7 days prior to exposure to virus. Pre-treated mice also survived an otherwise lethal dose of virus, the IgG- but not the F(ab')2-treated mice showing no weight loss. Successful reduction of established infection with this highly virulent virus was also observed with a single treatment 24 hr after virus exposure. Conclusions/Significance These data suggest that a novel and commercially-scalable technique for preparing Ab from hyperimmune bovine colostrum could allow production of a valuable substitute for antiviral drugs to control influenza with the advantage of eliminating the need for daily administration.
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Richards AJ, Muller B, Shotwell M, Cowart LA, Rohrer B, Lu X. Assessing the functional coherence of gene sets with metrics based on the Gene Ontology graph. ACTA ACUST UNITED AC 2010; 26:i79-87. [PMID: 20529941 PMCID: PMC2881388 DOI: 10.1093/bioinformatics/btq203] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
MOTIVATION The results of initial analyses for many high-throughput technologies commonly take the form of gene or protein sets, and one of the ensuing tasks is to evaluate the functional coherence of these sets. The study of gene set function most commonly makes use of controlled vocabulary in the form of ontology annotations. For a given gene set, the statistical significance of observing these annotations or 'enrichment' may be tested using a number of methods. Instead of testing for significance of individual terms, this study is concerned with the task of assessing the global functional coherence of gene sets, for which novel metrics and statistical methods have been devised. RESULTS The metrics of this study are based on the topological properties of graphs comprised of genes and their Gene Ontology annotations. A novel aspect of these methods is that both the enrichment of annotations and the relationships among annotations are considered when determining the significance of functional coherence. We applied our methods to perform analyses on an existing database and on microarray experimental results. Here, we demonstrated that our approach is highly discriminative in terms of differentiating coherent gene sets from random ones and that it provides biologically sensible evaluations in microarray analysis. We further used examples to show the utility of graph visualization as a tool for studying the functional coherence of gene sets. AVAILABILITY The implementation is provided as a freely accessible web application at: http://projects.dbbe.musc.edu/gosteiner. Additionally, the source code written in the Python programming language, is available under the General Public License of the Free Software Foundation. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Franchini M, Monnais E, Seboek D, Radimerski T, Zini E, Kaufmann K, Lutz T, Reusch C, Ackermann M, Muller B, Linscheid P. Insulin resistance and increased lipolysis in bone marrow derived adipocytes stimulated with agonists of Toll-like receptors. Horm Metab Res 2010; 42:703-9. [PMID: 20603780 DOI: 10.1055/s-0030-1261872] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Our objectives were to identify Toll-like receptors (TLRs) in human bone marrow derived adipocytes, to test specific TLR agonists for their ability to induce a proinflammatory response, and to investigate possible metabolic effects after TLR activation, in particular, those associated with insulin resistance and lipolysis. Mesenchymal stem cells were isolated from human bone marrow and differentiated into adipocytes. Total RNA before or after stimulation with agonists specific for TLR was extracted for analysis of expression of TLRs proinflammatory signals and molecules involved in glucose metabolism (IRS-1 and GLUT4). Furthermore, cytokine protein expression was measured from cell lysates. Finally, insulin induced glucose uptake and lipolysis were measured. Human bone marrow-derived adipocytes express TLR1-10. They react to stimulation with specific ligands with expression of inflammatory markers (IL-1beta, IL-6, TNFalpha, IL-8, MCP-1) at the RNA and protein levels. IRS-1 and GLUT4 expression was downregulated after stimulation with the TLR4 and TLR3 specific ligands LPS and poly (I:C), respectively. Insulin-induced glucose uptake was decreased and lipolysis increased. We conclude that adipocytes express TLR 1-10 and react to agonists specific for TLR 1-6. As a consequence proinflammatory cytokine are induced, in particular, IL-6, IL-8, and MCP-1. Since stimulation is followed by decreased insulin-induced glucose uptake and increased lipolysis we conclude that TLRs may be important linking molecules in the generation of insulin resistance in fat tissue.
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Skeie G, Muller B, Haugarvoll K, Larsen J, Tysnes O. Differential effect of environmental risk factors on postural instability gait difficulties and tremor dominant Parkinson's disease. Mov Disord 2010; 25:1847-52. [DOI: 10.1002/mds.23178] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Sonar SS, Schwinge D, Kilic A, Yildirim AO, Conrad ML, Seidler K, Muller B, Renz H, Nockher WA. Nerve growth factor enhances Clara cell proliferation after lung injury. Eur Respir J 2010; 36:105-15. [DOI: 10.1183/09031936.00165508] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Niedhammer I, David S, Degioanni S, Drummond A, Philip P, Acquarone D, Aicardi F, André-Mazeaud P, Arsento M, Astier R, Baille H, Bajon-Thery F, Barre E, Basire C, Battu JL, Baudry S, Beatini C, Beaud'huin N, Becker C, Bellezza D, Beque C, Bernstein O, Beyssier C, Blanc-Cascio F, Blanchet N, Blondel C, Boisselot R, Bordes-Dupuy G, Borrelly N, Bouhnik D, Boulanger MF, Boulard J, Borreau P, Bourret D, Boustière AM, Breton C, Bugeon G, Buono-Michel M, Canonne JF, Capella D, Cavin-Rey M, Cervoni C, Charreton D, Charrier D, Chauvin MA, Chazal B, Cougnot C, Cuvelier G, Dalivoust G, Daumas R, Debaille A, De Bretteville L, Delaforge G, Delchambre A, Domeny L, Donati Y, Ducord-Chapelet J, Duran C, Durand-Bruguerolle D, Fabre D, Faivre A, Falleri R, Ferrando G, Ferrari-Galano J, Flutet M, Fouché JP, Fournier F, Freyder E, Galy M, Garcia A, Gazazian G, Gérard C, Girard F, Giuge M, Goyer C, Gravier C, Guyomard A, Hacquin MC, Halimi E, Ibagnes T, Icart P, Jacquin MC, Jaubert B, Joret JP, Julien JP, Kacel M, Kesmedjian E, Lacroix P, Lafon-Borelli M, Lallai S, Laudicina J, Leclercq X, Ledieu S, Leroy J, Leroyer L, Loesche F, Londi D, Longueville JM, Lotte MC, Louvain S, Lozé M, Maculet-Simon M, Magallon G, Marcelot V, Mareel MC, Martin P, Masse AM, Méric M, Milliet C, Mokhtari R, Monville AM, Muller B, Obadia G, Pelser M, Peres L, Perez E, Peyron M, Peyronnin F, Postel S, Presseq P, Pyronnet E, Quinsat C, Raulot-Lapointe H, Rigaud P, Robert F, Robert O, Roger K, Roussel A, Roux JP, Rubini-Remigy D, Sabate N, Saccomano-Pertus C, Salengro B, Salengro-Trouillez P, Samson E, Sendra-Gille L, Seyrig C, Stoll G, Tarpinian N, Tavernier M, Tempesta S, Terracol H, Torresani F, Triglia MF, Vandomme V, Vieillard F, Vilmot K, Vital N. Workplace bullying and sleep disturbances: findings from a large scale cross-sectional survey in the French working population. Sleep 2009; 32:1211-9. [PMID: 19750926 DOI: 10.1093/sleep/32.9.1211] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES The purpose of this study was to explore the associations between workplace bullying, the characteristics of workplace bullying, and sleep disturbances in a large sample of employees of the French working population. DESIGN Workplace bullying, evaluated using the validated instrument developed by Leymann, and sleep disturbances, as well as covariates, were measured using a self-administered questionnaire. Covariates included age, marital status, presence of children, education, occupation, working hours, night work, physical and chemical exposures at work, self-reported health, and depressive symptoms. Statistical analysis was performed using logistic regression analysis and was carried out separately for men and women. SETTING General working population. PARTICIPANTS The study population consisted of a random sample of 3132 men and 4562 women of the working population in the southeast of France. RESULTS Workplace bullying was strongly associated with sleep disturbances. Past exposure to bullying also increased the risk for this outcome. The more frequent the exposure to bullying, the higher the risk of experiencing sleep disturbances. Observing someone else being bullied in the workplace was also associated with the outcome. Adjustment for covariates did not modify the results. Additional adjustment for self-reported health and depressive symptoms diminished the magnitude of the associations that remained significant. CONCLUSIONS The prevalence of workplace bullying (around 10%) was found to be high in this study as well was the impact of this major job-related stressor on sleep disturbances. Although no conclusion about causality could be drawn from this cross-sectional study, the findings suggest that the contribution of workplace bullying to the burden of sleep disturbances may be substantial.
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