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Fosch-Villaronga E, van der Hof S, Lutz C, Tamò-Larrieux A. Toy story or children story? Putting children and their rights at the forefront of the artificial intelligence revolution. AI Soc 2023; 38:133-152. [PMID: 34642550 PMCID: PMC8494166 DOI: 10.1007/s00146-021-01295-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 09/24/2021] [Indexed: 02/06/2023]
Abstract
Policymakers need to start considering the impact smart connected toys (SCTs) have on children. Equipped with sensors, data processing capacities, and connectivity, SCTs targeting children increasingly penetrate pervasively personal environments. The network of SCTs forms the Internet of Toys (IoToys) and often increases children's engagement and playtime experience. Unfortunately, this young part of the population and, most of the time, their parents are often unaware of SCTs' far-reaching capacities and limitations. The capabilities and constraints of SCTs create severe side effects at the technical, individual, and societal level. These side effects are often unforeseeable and unexpected. They arise from the technology's use and the interconnected nature of the IoToys, without necessarily involving malevolence from their creators. Although existing regulations and new ethical guidelines for artificial intelligence provide remedies to address some of the side effects, policymakers did not develop these redress mechanisms having children and SCTs in mind. This article provides an analysis of the arising side effects of SCTs and contrasts them with current regulatory redress mechanisms. We thereby highlight misfits and needs for further policymaking efforts.
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Affiliation(s)
- E. Fosch-Villaronga
- eLaw Center for Law and Digital Technologies, Leiden University, Leiden, The Netherlands
| | - S. van der Hof
- eLaw Center for Law and Digital Technologies, Leiden University, Leiden, The Netherlands
| | - C. Lutz
- Nordic Centre for Internet and Society, Department of Communication and Culture, BI Norwegian Business School, Oslo, Norway
| | - A. Tamò-Larrieux
- FAA-Institute for Work and Employment Research, University of St. Gallen, St. Gallen, Switzerland
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2
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Jerome MA, Lutz C, Lutz GE. Risks of Intradiscal Orthobiologic Injections: A Review of the Literature and Case Series Presentation. Int J Spine Surg 2021; 15:26-39. [PMID: 34376494 DOI: 10.14444/8053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Intervertebral disc disease (IDD) is responsible for a large portion of back pain with historically suboptimal treatments for long-term improvement. IDD pathogenesis is thought to arise at a cellular and biochemical level, making biologically based injections an area of clinical interest. Although human studies have shown promise, emerging data suggest there may be risks inherent to such injections that were previously unrecognized. The aim of this review is to summarize the known risks to date and provide mitigation steps to reduce potential complications in the future. In addition, we present a small case series of serious adverse events (SAEs) from our clinical practice. METHODS A literature review was performed to identify human intradiscal autologous biologic injection studies to date, including mesenchymal signaling cells (MSCs) and platelet-rich plasma (PRP) preparations, which were reviewed for complications. Cases of complication following intradiscal orthobiologic injection were identified from a single outpatient center and reviewed. RESULTS Publications of MSC-based intradiscal injection documented 136 total patients treated with two SAEs reported, one infection and one progressive disc herniation. Publications of PRP intradiscal injection included 194 patients with one SAE reported. We also review three cases of previously unpublished SAEs, including one case of confirmed infection with Cutibacterium acnes (C acnes) and two presumed cases of discitis without pathogen confirmation. Bone marrow concentrate was the injectate in all three cases. CONCLUSIONS Although biologic intradiscal injection shows promise for the treatment of discogenic back pain, there are inherent risks to be considered and mitigated. We currently recommend a leukocyte-rich PRP and a two-needle delivery technique coupled with intradiscal gentamicin to mitigate the risk of postinjection spondylodiscitis. Further research is needed using large registries to not only track clinical outcomes but also complication rates.
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Affiliation(s)
| | - Christopher Lutz
- Regenerative SportsCare Institute, New York, New York.,Department of Physiatry, Hospital for Special Surgery, New York, New York.,Department of Rehabilitation Medicine, Weill Cornell Medical College, New York, New York
| | - Gregory E Lutz
- Regenerative SportsCare Institute, New York, New York.,Department of Physiatry, Hospital for Special Surgery, New York, New York.,Department of Rehabilitation Medicine, Weill Cornell Medical College, New York, New York
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3
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Krishnan V, Thanigaiarasu L, Overzier M, Aartsma-Rus A, Bogdanik L, Lutz C, Larcher T, Guiner CL, Grounds M. DMD – BIOMARKERS & OUTCOME MEASURES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Riffel P, Schwaab J, Lutz C, Naumann N, Metzgeroth G, Fabarius A, Schoenberg SO, Hofmann WK, Valent P, Reiter A, Jawhar M. An increased bone mineral density is an adverse prognostic factor in patients with systemic mastocytosis. J Cancer Res Clin Oncol 2020; 146:945-951. [PMID: 31980928 PMCID: PMC7085471 DOI: 10.1007/s00432-019-03119-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 12/19/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Systemic mastocytosis (SM) is characterized by the expansion of clonal mast cells that infiltrate various organ systems. The extent of organ infiltration and subsequent organ damage distinguishes between indolent SM (ISM) defined by a nearly normal life expectancy and advanced SM (AdvSM) defined by poor prognosis. In ISM, measurement of the bone mineral density (BMD) frequently reveals osteoporosis. In contrast, the clinical implication of an increased BMD and osteosclerosis remains unclear. METHODS BMD was evaluated in 61 patients with mastocytosis (ISM, n = 29, 48%; AdvSM, n = 32, 52%). We correlated the prevalence of osteoporosis, increased BMD and osteosclerosis with clinical parameters, disease variant and prognosis. RESULTS Osteoporosis was detected in 11/29 (38%) patients with ISM but only in 2/32 (6%) patients with AdvSM (p = 0.004). An increased BMD was detected in 1/29 (3%) patients with ISM and 24/32 (75%) patients with AdvSM (p < 0.001) while osteosclerosis was only detected in AdvSM patients (16/32, 50%). AdvSM patients with increased BMD had higher levels of bone marrow mast cell infiltration, higher serum tryptase and alkaline phosphatase levels compared to ISM as well as higher number of high-molecular risk mutations (p < 0.05). In addition, we found that the prognosis of AdvSM patients with increased BMD is inferior compared to those without increased BMD (median overall survival 3.6 years versus not reached, p = 0.031). CONCLUSIONS Osteoporosis is a common feature in ISM but not in AdvSM. An increased BMD is frequently present in AdvSM but not in ISM and is associated with more advanced disease and inferior outcome.
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Affiliation(s)
- Philipp Riffel
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Christopher Lutz
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Nicole Naumann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Georgia Metzgeroth
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Alice Fabarius
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Stefan O Schoenberg
- Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Wolf-Karsten Hofmann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany.
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Beatty NR, Lutz C, Boachie-Adjei K, Leynes TA, Lutz C, Lutz G. Spondylodiscitis due to Cutibacterium acnes following lumbosacral intradiscal biologic therapy: a case report. Regen Med 2019; 14:823-829. [PMID: 31423905 DOI: 10.2217/rme-2019-0008] [Citation(s) in RCA: 8] [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] [Indexed: 12/16/2022] Open
Abstract
A 40-year-old woman with a history of chronic low back pain underwent a fluoroscopically guided intradiscal platelet-rich plasma injection (PRP) at the L5-S1 level. She subsequently developed progressive low back pain, night sweats and decreased ability to ambulate. Laboratory work-up revealed elevated acute phase reactants and imaging revealed L5-S1 intervertebral disc and vertebral end-plate abnormalities highly suggestive of spondylodiscitis. Computed tomography-guided aspiration and biopsy cultures grew Cutibacterium acnes and the patient was subsequently treated with intravenous antibiotics without surgical management. To the best of our knowledge, this is the first published case of lumbar spondylodiscitis following an intradiscal PRP injection, and brings to the forefront several clinically relevant issues including the antimicrobial effects of PRP, the role of C. acnes in spine infections and the ideal treatment protocol for intradiscal biologics in order to minimize morbidity and optimize functional outcomes.
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Affiliation(s)
- Nicholas R Beatty
- Regenerative Sportscare Institute, New York, NY 10128, USA.,Department of Rehabilitation and Human Performance, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Mount Sinai Hospital, New York, NY, USA
| | - Cole Lutz
- Regenerative Sportscare Institute, New York, NY 10128, USA
| | | | | | - Christopher Lutz
- Regenerative Sportscare Institute, New York, NY 10128, USA.,Hospital for Special Surgery, New York, NY, USA.,New York Presbyterian, New York, NY, USA
| | - Gregory Lutz
- Regenerative Sportscare Institute, New York, NY 10128, USA.,Hospital for Special Surgery, New York, NY, USA.,New York Presbyterian, New York, NY, USA
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Burstein SR, Valsecchi F, Kawamata H, Bourens M, Zeng R, Zuberi A, Milner TA, Cloonan SM, Lutz C, Barrientos A, Manfredi G. In vitro and in vivo studies of the ALS-FTLD protein CHCHD10 reveal novel mitochondrial topology and protein interactions. Hum Mol Genet 2019; 27:160-177. [PMID: 29112723 DOI: 10.1093/hmg/ddx397] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 11/01/2017] [Indexed: 12/12/2022] Open
Abstract
Mutations in coiled-coil-helix-coiled-coil-helix-domain containing 10 (CHCHD10), a mitochondrial twin CX9C protein whose function is still unknown, cause myopathy, motor neuron disease, frontotemporal dementia, and Parkinson's disease. Here, we investigate CHCHD10 topology and its protein interactome, as well as the effects of CHCHD10 depletion or expression of disease-associated mutations in wild-type cells. We find that CHCHD10 associates with membranes in the mitochondrial intermembrane space, where it interacts with a closely related protein, CHCHD2. Furthermore, both CHCHD10 and CHCHD2 interact with p32/GC1QR, a protein with various intra and extra-mitochondrial functions. CHCHD10 and CHCHD2 have short half-lives, suggesting regulatory rather than structural functions. Cell lines with CHCHD10 knockdown do not display bioenergetic defects, but, unexpectedly, accumulate excessive intramitochondrial iron. In mice, CHCHD10 is expressed in many tissues, most abundantly in heart, skeletal muscle, liver, and in specific CNS regions, notably the dopaminergic neurons of the substantia nigra and spinal cord neurons, which is consistent with the pathology associated with CHCHD10 mutations. Homozygote CHCHD10 knockout mice are viable, have no gross phenotypes, no bioenergetic defects or ultrastructural mitochondrial abnormalities in brain, heart or skeletal muscle, indicating that functional redundancy or compensatory mechanisms for CHCHD10 loss occur in vivo. Instead, cells expressing S59L or R15L mutant versions of CHCHD10, but not WT, have impaired mitochondrial energy metabolism. Taken together, the evidence obtained from our in vitro and in vivo studies suggest that CHCHD10 mutants cause disease through a gain of toxic function mechanism, rather than a loss of function.
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Affiliation(s)
- S R Burstein
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA.,Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY 10065, USA
| | - F Valsecchi
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - H Kawamata
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - M Bourens
- Department of Neurology, Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - R Zeng
- Department of Neurology, Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - A Zuberi
- The Jackson Laboratories, ME 04609, USA
| | - T A Milner
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA.,Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology, The Rockefeller University, New York, NY 10065, USA
| | - S M Cloonan
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - C Lutz
- The Jackson Laboratories, ME 04609, USA
| | - A Barrientos
- Department of Neurology, Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - G Manfredi
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
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7
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Hünerwadel A, Fagagnini S, Rogler G, Lutz C, Jaeger SU, Mamie C, Weder B, Ruiz PA, Hausmann M. Severity of local inflammation does not impact development of fibrosis in mouse models of intestinal fibrosis. Sci Rep 2018; 8:15182. [PMID: 30315190 PMCID: PMC6185984 DOI: 10.1038/s41598-018-33452-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 10/24/2017] [Accepted: 09/26/2018] [Indexed: 01/01/2023] Open
Abstract
Intestinal fibrosis is thought to be a consequence of excessive tissue repair, and constitutes a common problem in patients with Crohn’s disease (CD). While fibrosis seems to require inflammation as a prerequisite it is unclear whether the severity or persistence of inflammation influences the degree of fibrosis. Our aim was to investigate the role of sustained inflammation in fibrogenesis. For the initiation of fibrosis in vivo the models of Il10−/− spontaneous colitis, dextran sodium sulfate (DSS)-induced chronic colitis and heterotopic transplantation were used. In Il10−/− mice, we determined a positive correlation between expression of pro-inflammatory factors (Il1β, Tnf, Ifnγ, Mcp1 and Il6). We also found a positive correlation between the expression of pro-fibrotic factors (Col3a1 Col1a1, Tgfβ and αSma). In contrast, no significant correlation was determined between the expression of pro-inflammatory Tnf and pro-fibrotic αSma, Col1a1, Col3a1, collagen layer thickness and the hydroxyproline (HYP) content. Results from the DSS-induced chronic colitis model confirmed this finding. In the transplantation model for intestinal fibrosis a pronounced increase in Mcp1, inos and Il6 in Il10−/− as compared to WT grafts was observed, indicating more severe inflammation in Il10−/− grafts. However, the increase of collagen over time was virtually identical in both Il10−/− and WT grafts. Severity of inflammation during onset of fibrogenesis did not correlate with collagen deposition. Although inflammation might be a pre-requisite for the initiation of fibrosis our data suggest that it has a minor impact on the progression of fibrosis. Our results suggest that development of fibrosis and inflammation may be disconnected. This may be important for explaining the inefficacy of anti-inflammatory treatments agents in most cases of fibrotic inflammatory bowel diseases (IBD).
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Affiliation(s)
- A Hünerwadel
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - S Fagagnini
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - G Rogler
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - C Lutz
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - S U Jaeger
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany.,University of Tübingen, Tübingen, Germany
| | - C Mamie
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - B Weder
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - P A Ruiz
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
| | - M Hausmann
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland.
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8
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Doyen V, Braun JJ, Lutz C, Khayath N, de Blay F. [The usefulness of nasal provocation tests for respiratory physicians]. Rev Mal Respir 2018; 35:788-795. [PMID: 30174237 DOI: 10.1016/j.rmr.2018.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 01/15/2018] [Indexed: 10/28/2022]
Abstract
Rhinitis and asthma are common diseases that are strongly linked from both the epidemiological and patho-physiological point of view. A precise aetiological diagnosis is required in order to optimize treatment. Nasal provocation tests (NPT) determine precisely the role of the allergen in the initiation of the symptoms of rhinitis particularly when the history does not produce convincing evidence of the clinical relevance of an allergen. It may also have important consequences for the choice of an allergenic immunotherapy. NPT are not standardized but simple methods based on international recommendations provide us with good diagnostic accuracy. In this paper, we will discuss the practical aspects of NPT as well as the clinical or research situations where they may be useful for the respiratory physician.
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Affiliation(s)
- V Doyen
- Clinique d'immuno-allergologie, CHU de Brugmann, université Libre de Bruxelles (ULB), 4, place Van Gehuchten, 1200 Bruxelles, Belgique.
| | - J-J Braun
- Service de pneumologie et d'allergologie, hôpitaux universitaires de Strasbourg, pôle de pathologie thoracique, NHC, 67000 Strasbourg, France; Service ORL-CCF, hôpital de Hautepierre, hôpitaux universitaires de Strasbourg, 67000 Strasbourg, France
| | - C Lutz
- Service de pneumologie et d'allergologie, hôpitaux universitaires de Strasbourg, pôle de pathologie thoracique, NHC, 67000 Strasbourg, France
| | - N Khayath
- Service de pneumologie et d'allergologie, hôpitaux universitaires de Strasbourg, pôle de pathologie thoracique, NHC, 67000 Strasbourg, France
| | - F de Blay
- Service de pneumologie et d'allergologie, hôpitaux universitaires de Strasbourg, pôle de pathologie thoracique, NHC, 67000 Strasbourg, France
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9
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Araya S, Kuster E, Gluch D, Mariotta L, Lutz C, Reding TV, Graf R, Verrey F, Camargo SMR. Exocrine pancreas glutamate secretion help to sustain enterocyte nutritional needs under protein restriction. Am J Physiol Gastrointest Liver Physiol 2018; 314:G517-G536. [PMID: 29167114 DOI: 10.1152/ajpgi.00135.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Glutamine (Gln) is the most concentrated amino acid in blood and considered conditionally essential. Its requirement is increased during physiological stress, such as malnutrition or illness, despite its production by muscle and other organs. In the malnourished state, Gln has been suggested to have a trophic effect on the exocrine pancreas and small intestine. However, the Gln transport capacity, the functional relationship of these two organs, and the potential role of the Gln-glutamate (Glu) cycle are unknown. We observed that pancreatic acinar cells express lower levels of Glu than Gln transporters. Consistent with this expression pattern, the rate of Glu influx into acinar cells was approximately sixfold lower than that of Gln. During protein restriction, acinar cell glutaminase expression was increased and Gln accumulation was maintained. Moreover, Glu secretion by acinar cells into pancreatic juice and thus into the lumen of the small intestine was maintained. In the intestinal lumen, Glu absorption was preserved and Glu dehydrogenase expression was augmented, potentially providing the substrates for increasing energy production via the TCA cycle. Our findings suggest that one mechanism by which Gln exerts a positive effect on exocrine pancreas and small intestine involves the Gln metabolism in acinar cells and the secretion of Glu into the small intestine lumen. The exocrine pancreas acinar cells not only avidly accumulate Gln but metabolize Gln to generate energy and to synthesize Glu for secretion in the pancreatic juice. Secreted Glu is suggested to play an important role during malnourishment in sustaining small intestinal homeostasis. NEW & NOTEWORTHY Glutamine (Gln) has been suggested to have a trophic effect on exocrine pancreas and small intestine in malnourished states, but the mechanism is unknown. In this study, we suggest that this trophic effect derives from an interorgan relationship between exocrine pancreas and small intestine for Gln-glutamate (Glu) utilization involving the uptake and metabolism of Gln in acinar cells and secretion of Glu into the lumen of the small intestine.
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Affiliation(s)
- S Araya
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - E Kuster
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - D Gluch
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - L Mariotta
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - C Lutz
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - T V Reding
- Department of Surgery, University Hospital Zurich , Zurich , Switzerland
| | - R Graf
- Department of Surgery, University Hospital Zurich , Zurich , Switzerland
| | - F Verrey
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
| | - S M R Camargo
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich , Zurich , Switzerland
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10
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Grant JE, Lutz C, Huffman D. Understanding Curriculum Effectiveness and the Student Experience in a Modular Undergraduate Laboratory Experience Integrating Research and MALDI‐TOF MS. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.663.4] [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: 11/11/2022]
Affiliation(s)
| | - Christopher Lutz
- Department of ChemistryAnoka‐Ramsey Community CollegeCoon RapidsMN
| | - Douglas Huffman
- Department of Curriculum & TeachingUniversity of KansasLawrenceKS
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11
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Lutz C, Weder B, Hünerwadel A, Fagagnini S, Lang B, Beerenwinkel N, Rossel JB, Rogler G, Misselwitz B, Hausmann M. Myeloid differentiation primary response gene (MyD) 88 signalling is not essential for intestinal fibrosis development. Sci Rep 2017; 7:17678. [PMID: 29247242 PMCID: PMC5732165 DOI: 10.1038/s41598-017-17755-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 08/31/2017] [Accepted: 11/29/2017] [Indexed: 01/15/2023] Open
Abstract
Dysregulation of the immune response to microbiota is associated with inflammatory bowel disease (IBD), which can trigger intestinal fibrosis. MyD88 is a key component of microbiota signalling but its influence on intestinal fibrosis has not been clarified. Small bowel resections from donor-mice were transplanted subcutaneously into the neck of recipients C57BL/6 B6-MyD88tm1 Aki (MyD88-/-) and C57BL/6-Tg(UBC-green fluorescence protein (GFP))30Scha/J (GFP-Tg). Grafts were explanted up to 21 days after transplantation. Collagen layer thickness was determined using Sirius Red stained slides. In the mouse model of fibrosis collagen deposition and transforming growth factor-beta 1 (TGF-β1) expression was equal in MyD88+/+ and MyD88-/-, indicating that MyD88 was not essential for fibrogenesis. Matrix metalloproteinase (Mmp)9 expression was significantly decreased in grafts transplanted into MyD88-/- recipients compared to MyD88+/+ recipients (0.2 ± 0.1 vs. 153.0 ± 23.1, respectively, p < 0.05), similarly recruitment of neutrophils was significantly reduced (16.3 ± 4.5 vs. 25.4 ± 3.1, respectively, p < 0.05). Development of intestinal fibrosis appears to be independent of MyD88 signalling indicating a minor role of bacterial wall compounds in the process which is in contrast to published concepts and theories. Development of fibrosis appears to be uncoupled from acute inflammation.
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Affiliation(s)
- C Lutz
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Weder
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - A Hünerwadel
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - S Fagagnini
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Lang
- Department of Biosystems Sciences and Engineering, ETH Zurich, Basel, Switzerland.,SIB Swiss Institute of Bioinformatics, Basel, Switzerland
| | - N Beerenwinkel
- Department of Biosystems Sciences and Engineering, ETH Zurich, Basel, Switzerland.,SIB Swiss Institute of Bioinformatics, Basel, Switzerland
| | - J B Rossel
- Institute of Social and Preventive Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - G Rogler
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - B Misselwitz
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland
| | - M Hausmann
- Department of Gastroenterology and Hepatology, University Hospital, Zurich, Switzerland.
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Louis ML, D'ingrado P, Ehkirch FP, Bertiaux S, Colombet P, Sonnery-Cottet B, Schlatterer B, Pailhé R, Panisset JC, Steltzlen C, Lustig S, Lutz C, Dalmay F, Imbert P, Saragaglia D. Combined intra- and extra-articular grafting for revision ACL reconstruction: A multicentre study by the French Arthroscopy Society (SFA). Orthop Traumatol Surg Res 2017; 103:S223-S229. [PMID: 28889985 DOI: 10.1016/j.otsr.2017.08.007] [Citation(s) in RCA: 17] [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: 07/02/2017] [Accepted: 08/23/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND A careful analysis of the reasons for ACL reconstruction failure is essential to selection of the optimal surgical revision technique designed to ensure good rotational stability and to minimise the risk of re-rupture. OBJECTIVE To evaluate anterolateral ligament (ALL) stabilisation during revision ACL reconstruction. HYPOTHESIS ALL stabilisation during revision ACL reconstruction provides good rotational stability without increasing the risk of complications. MATERIAL AND METHODS This multicentre study included 349 patients, 151 retrospectively and 198 prospectively. There were 283 males and 66 females. Inclusion criteria were an indication for revision ACL reconstruction surgery with combined intra-articular reconstruction and ALL stabilisation after failed autograft ACL reconstruction, and intact PCL. Exclusion criteria were primary ACL reconstruction and concomitant peripheral medial and/or lateral lesions. Each patient underwent a clinical and radiographic evaluation before and after revision surgery. Before revision surgery, the mean IKDC score was 56.5±15.5 and 96% of patients were IKDC C or D. RESULTS Rates were 5.0% for early and 10.5% for late postoperative complications. Lachmann's test had a hard stop at last follow-up in 97% of patients. The pivot-shift test was positive in 1% of patients. The mean subjective IKDC score was 84.5±13.0 and 86.5% of patients were IKDC A or B. The proportions of patients with radiographic knee osteoarthritis at last follow-up was unchanged for the lateral tibio-femoral and patello-femoral compartments but increased by 9.7% to 21.2% for the medial tibio-femoral compartment. The re-rupture rate was 1.2% and the further surgical revision rate was 5.4%. CONCLUSION Anterior laxity at last follow-up was consistent with previous studies of revision ACL reconstruction. However, rotational stability and the re-rupture risk were improved. ALL stabilisation is among the techniques that deserve consideration as part of the therapeutic options for revision ACL reconstruction. LEVEL OF EVIDENCE IV, retrospective and prospective cohort study.
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Affiliation(s)
- M-L Louis
- Institut de chirurgie orthopédique et sportive, clinique Juge, 463, rue Paradis, 13008 Marseille, France.
| | - P D'ingrado
- Clinique du Parc, 155, boulevard de Stalingrad, 69006 Lyon, France
| | - F P Ehkirch
- Clinique Maussins-Nollet, 67, rue de Romainville, 75019 Paris, France
| | - S Bertiaux
- Hôpital privé de l'Estuaire, 505, rue Irène-Joliot-Curie, 76620 le Havre, France
| | - P Colombet
- Centre de chirurgie orthopédique et sportive, 2, rue Negrevergne, 33700 Mérignac, France
| | - B Sonnery-Cottet
- Centre orthopédique Santy, 24, avenue Paul-Santy, 69008 Lyon, France
| | - B Schlatterer
- Institut Monégasque de médecine du sport, 11, avenue d'Ostende, 98000, Monaco
| | - R Pailhé
- Clinique universitaire, hôpital Sud, CHU de Grenoble, avenue de Kimberley, 38130 Échirolles, France
| | - J C Panisset
- Clinique des cèdres, 21, rue Albert-Londres, 38432 Échirolles, France
| | - C Steltzlen
- Centre hospitalier de Versailles André-Mignot, 177, rue de Versailles, 78150 Le Chesnay, France
| | - S Lustig
- Centre Albert-Trillat, hôpital de la Croix-Rousse, 103, grande rue de la Croix-Rousse, 69004 Lyon, France
| | - C Lutz
- ICOSS, 50, avenue des Vosges, 67000 Strasbourg, France
| | - F Dalmay
- CEBIMER, faculté de médecine de Limoges, 2, rue du Docteur-Marcland, 87042 Limoges cedex, France
| | - P Imbert
- Institut de chirurgie articulaire et des pathologies du sport, 87, avenue Archimède, 83700 St-Raphael, France
| | - D Saragaglia
- Clinique universitaire, hôpital Sud, CHU de Grenoble, avenue de Kimberley, 38130 Échirolles, France
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Imbert P, Lustig S, Steltzlen C, Batailler C, Colombet P, Dalmay F, Bertiaux S, D'ingrado P, Ehkirch FP, Louis ML, Pailhé R, Panisset JC, Schlaterrer B, Sonnery-Cottet B, Sigwalt L, Saragaglia D, Lutz C. Midterm results of combined intra- and extra-articular ACL reconstruction compared to historical ACL reconstruction data. Multicenter study of the French Arthroscopy Society. Orthop Traumatol Surg Res 2017; 103:S215-S221. [PMID: 28917521 DOI: 10.1016/j.otsr.2017.09.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 07/02/2017] [Accepted: 08/23/2017] [Indexed: 02/02/2023]
Abstract
INTRODUCTION During anterior cruciate ligament (ACL) reconstruction procedures, anterolateral reconstruction (ALR) can also be performed to improve the knee's rotational stability. However, the effectiveness of this supplemental technique and its impact on the risk of retears and on the onset of secondary degenerative changesare controversial. HYPOTHESIS ALR improves control over the pivot shift, reduces the retear risk and delays the appearance of secondary degenerative lesions. MATERIAL AND METHODS Clinical examination, knee laxity measurements and X-ray evaluations were done in 478 patients with more than 3years' follow-up after combined ACL and ALR from 11 participating hospitals. The mean patient age at the time of surgery was 28years. Eighty-eight percent of the patients participated in pivot sports and 45% were competitive athletes. The findings of this study were compared to historical isolated ACL reconstruction data. RESULTS The average follow-up was 6.8years. No detectable pivot shift was found in 83% of patients, while 12.8% of patient had a smooth glide. The side-to-side difference in anteroposterior knee laxity with maximum manual force was less than 3mm in 66% of patients and less than 5mm in 95%. The retear rate was 5.4%, with half of these patients undergoing revision ACL surgery. Secondary meniscus damage requiring surgery occurred in 6.3% of patients; the radiological osteoarthritis rate was 17.5%. DISCUSSION When compared to historical ACL reconstruction data, combined intra- and extra-articular reconstruction does not increase the complication rate. At a mean follow-up of 6.8years, it provides better control over the pivot shift along with a low retear rate and low occurrence of secondary meniscus injuries. LEVEL OF EVIDENCE IV, multicenter study.
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Affiliation(s)
- P Imbert
- ICAPS, 87, avenue Archimède, 83700 St-Raphael, France.
| | - S Lustig
- Centre Albert Trillat, hôpital de la Croix-Rousse, 103, grande rue de la Croix-Rousse, 69004 Lyon, France
| | - C Steltzlen
- Centre hospitalier de Versailles André-Mignot, 177, rue de Versailles, 78150 Le Chesnay, France
| | - C Batailler
- Centre Albert Trillat, hôpital de la Croix-Rousse, 103, grande rue de la Croix-Rousse, 69004 Lyon, France
| | - P Colombet
- Centre de chirurgie orthopédique et sportive, 2, rue Negrevergne, 33700 Mérignac, France
| | - F Dalmay
- 2UMR Inserm 1094 NET, 2, rue du Docteur-Marcland, 87025 Limoges cedex, France
| | - S Bertiaux
- Hôpital privé de l'Estuaire, 505, rue Irène-Joliot-Curie, 76620 le Havre, France
| | - P D'ingrado
- Clinique du parc, 155, boulevard de Stalingrad, 69006 Lyon, France
| | - F P Ehkirch
- Clinique Maussins-Nollet, 67, rue de Romain-Ville, 75019 Paris, France
| | - M L Louis
- Centre ICOS, 463, rue Paradis, 13008 Marseille, France
| | - R Pailhé
- Clinique universitaire de chirurgie orthopédique et de traumatologie du sport, CHU de Grenoble, hôpital Sud, avenue de Kimberley, 38130 Échirolles, France
| | - J C Panisset
- Centre Ostéo-articulaire des Cèdres, 5, rue des Tropiques, Parc Sud Galaxie, 38130 Échirolles, France
| | | | - B Sonnery-Cottet
- Centre orthopédique Santy, 24, avenue Paul-Santy, 69008 Lyon, France
| | - L Sigwalt
- Clinique universitaire de chirurgie orthopédique et de traumatologie du sport, CHU de Grenoble, hôpital Sud, avenue de Kimberley, 38130 Échirolles, France
| | - D Saragaglia
- Clinique universitaire de chirurgie orthopédique et de traumatologie du sport, CHU de Grenoble, hôpital Sud, avenue de Kimberley, 38130 Échirolles, France
| | - C Lutz
- ICOSS, 50, avenue des Vosges, 67000 Strasbourg, France
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Szabó CÁ, Salinas FS, Papanastassiou AM, Begnaud J, Ravan M, Eggleston KS, Shade R, Lutz C, De La Garza M. High-frequency burst vagal nerve simulation therapy in a natural primate model of genetic generalized epilepsy. Epilepsy Res 2017; 138:46-52. [PMID: 29059589 DOI: 10.1016/j.eplepsyres.2017.10.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 07/12/2017] [Revised: 09/24/2017] [Accepted: 10/10/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE Since the approval of Vagal Nerve Stimulation (VNS) Therapy for medically refractory focal epilepsies in 1997, it has been also reported to be effective for a wide range of generalized seizures types and epilepsy syndromes. Instead of conventional VNS Therapy delivered at 20-30Hz signal frequencies, this study evaluates efficacy and tolerability of high-frequency burst VNS in a natural animal model for genetic generalized epilepsy (GGE), the epileptic baboon. METHODS Two female baboons (B1 P.h. Hamadryas and B2 P.h. Anubis x Cynocephalus) were selected because of frequently witnessed generalized tonic-clonic seizures (GTCS) for VNS implantation. High-frequency burst VNS Therapy was initiated after a 4-5 week baseline; different VNS settings (0.25, 2 or 2.5mA, 300Hz, 4 vs 7 pulses, 0.5-2.5s interburst interval, and intermittent stimulation for 1-2 vs for 24h per day) were tested over the subsequent 19 weeks, which included a 4-6 week wash-out period. GTCS frequencies were quantified for each setting, while seizure duration and postictal recovery times were compared to baseline. Scalp EEG studies were performed at almost every setting, including intermittent light stimulation (ILS) to evaluate photosensitivity. Pre-ILS ictal and interictal discharge rates, as well as ILS responses were compared between trials. The Novel Object test was used to assess potential treatment effects on behavior. RESULTS High-frequency burst VNS Therapy reduced GTCS frequencies at all treatment settings in both baboons, except when output currents were reduced (0.25mA) or intermittent stimulation was restricted (to 1-2h/day). Seizure duration and postictal recovery times were unchanged. Scalp EEG studies did not demonstrate treatment-related decrease of ictal or interictal epileptic discharges or photosensitivity, but continuous treatment for 120-180s during ILS appeared to reduce photoparoxysmal responses. High-frequency burst VNS Therapy was well-tolerated by both baboons, without cardiac or behavioral changes. Repetitive muscle contractions involving the neck and left shoulder girdle were observed intermittently, most commonly at 0.5 interburst intervals, but these were transient, resolving with a few cycles of stimulation and not noted in wakefulness. CONCLUSIONS This preclinical pilot study demonstrates efficacy and tolerability of high-frequency burst VNS Therapy in the baboon model of GGE. The muscle contractions may be due to aberrant propagation of the stimulus along the vagal nerve or to the ansa cervicalis, but can be reduced by minimal adjustment of current output or stimulus duration.
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Affiliation(s)
- C Á Szabó
- Department of Neurology, UT Health San Antonio, San Antonio, TX, United States; South Texas Comprehensive Epilepsy Center, University Health System, San Antonio, TX, United States.
| | - F S Salinas
- Research Imaging Institute, UT Health San Antonio, San Antonio, TX, United States
| | - A M Papanastassiou
- South Texas Comprehensive Epilepsy Center, University Health System, San Antonio, TX, United States; Department of Neurosurgery, UT Health San Antonio, San Antonio, TX, United States
| | - J Begnaud
- LivaNova, Houston, TX, United States
| | - M Ravan
- LivaNova, Houston, TX, United States
| | | | - R Shade
- Southwest National Primate Research Center, Texas Biomed, San Antonio, TX, United States
| | - C Lutz
- Southwest National Primate Research Center, Texas Biomed, San Antonio, TX, United States
| | - M De La Garza
- Southwest National Primate Research Center, Texas Biomed, San Antonio, TX, United States
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Bogdanik L, Carpentier K, Cantor L, Lutz C. Genetic and phenotypic diversity in a panel of seven new DMD mouse models in the founder strains of the Collaborative Cross. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.353] [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: 11/25/2022]
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16
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Lutz GE, Nicoletti MR, Cyril GE, Harrison JR, Lutz C, Solomon JL, Cooke PM, Wyss JF, Herzog RJ, Moley PJ. Percutaneous Rupture of Zygapophyseal Joint Synovial Cysts: A Prospective Assessment of Nonsurgical Management. PM R 2017; 10:245-253. [DOI: 10.1016/j.pmrj.2017.07.078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 07/19/2017] [Accepted: 07/30/2017] [Indexed: 10/19/2022]
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Haraldsen A, Lutz C, Hoffmann L, Khalil A, Møller D. OC-0068: Heterogeneous dose escalation in lung: How robust are high FDG-uptake volumes during radiotherapy? Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30512-1] [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: 11/26/2022]
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18
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Baverel L, Cucurulo T, Lutz C, Colombet, Cournapeau J, Dalmay F, Lefevre N, Letartre R, Potel JF, Roussignol X, Surdeau L, Servien E. Anesthesia and analgesia methods for outpatient anterior cruciate ligament reconstruction. Orthop Traumatol Surg Res 2016; 102:S251-S255. [PMID: 27687059 DOI: 10.1016/j.otsr.2016.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 07/10/2016] [Accepted: 08/20/2016] [Indexed: 02/02/2023]
Abstract
INTRODUCTION More and more anterior cruciate ligament (ACL) reconstructions are being performed as outpatient surgery in France, because of economic considerations. Postoperative pain is the most common reason for delayed discharge that could require hospitalization, and the main reason for unanticipated hospital admission. The purpose of this study was to define the best anesthesia and analgesia methods for ACL reconstruction. MATERIALS AND METHODS This was a prospective, multicenter, comparative study performed between January 2014 and April 2015. Inclusion criteria were ACL reconstruction in patients above 15 years of age performed as an outpatient surgical procedure. The anesthesia techniques analyzed were general anesthesia, spinal anesthesia and quadruple nerve blockade. The analgesic methods studied were single-shot nerve blocks, continuous nerve blocks, peri-articular and intra-articular local infiltration analgesia (LIA), non-steroidal anti-inflammatory agents (NSAIDs) and intravenous corticosteroids. The main outcome criterion was pain on a visual analog scale (VAS). The secondary outcome criteria were delayed discharge of a patient who had undergone outpatient surgery, consumption of opioids and complications for the various anesthesia techniques and analgesia methods. RESULTS In all, 680 patients were included in this study, which was 63% of the ACL reconstruction procedures performed during this period. The study population was 69% male and 31% female, with an average age of 30 years. Twenty-three patients (3.4%) could not be discharged on the day of surgery. No correlation was found with the anesthesia technique used. NSAID treatment was protective relative to delayed discharge (P=0.009), while opioid consumption was a risk factor (P<0.01). There were no differences in the pain levels related to the type of anesthesia. Peri-articular LIA of the hamstring tendon harvest site was effective. Intra-articular LIA did not provide better analgesia. Continuous nerve block had complication rates above 13%. DISCUSSION All types of anesthesia were compatible with outpatient ACL reconstruction. No gold standard analgesia method can be defined based on this study's findings. However, we recommend multimodal analgesia associating peri-articular LIA or one-shot sensory saphenous nerve block, NSAIDs and corticosteroid treatment, and cryotherapy. LEVEL OF EVIDENCE II, prospective comparative non-randomized study.
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Affiliation(s)
- L Baverel
- Centre hospitalier universitaire, Hôtel-Dieu, 1, place Alexis-Ricordeau, 44093 Nantes, France.
| | - T Cucurulo
- Institut de Chirurgie Orthopédique et Sportive (ICOS 13), 463, rue Paradis, 13008 Marseille, France
| | - C Lutz
- ICOSS, 50, avenue des Vosges, 67000 Strasbourg, France
| | - Colombet
- Centre de Chirurgie Orthopédique et Sportive, 2, rue Negrevergne, 33700 Mérignac, France
| | - J Cournapeau
- Centre hospitalier universitaire, Ambroise-Paré, 9, avenue Charles-de-Gaulle, 92100 Boulogne-Billancourt, France
| | - F Dalmay
- Inserm 1094, UMR, NET, 2, rue du Docteur-Marcland, 87025 Limoges, France
| | - N Lefevre
- Institut de l'Appareil Locomoteur Nollet, 75017 Paris, France; Clinique du Sport Paris V, 75005 Paris, France
| | - R Letartre
- Hôpital privé la Louvière, 122, rue de la Louvière, 59000 Lille, France
| | - J-F Potel
- Medipôle, 45, rue de Gironis, 31036 Toulouse, France
| | - X Roussignol
- Centre hospitalier universitaire, Ch.-Nicolle, 76031 Rouen, France
| | - L Surdeau
- Centre de Chirurgie Orthopédique et Sportive, 2, rue Negrevergne, 33700 Mérignac, France
| | - E Servien
- Hopital universitaire de la croix-rousse, Centre Albert-Trillat, 103, grande rue de la Croix-Rousse, 69004 Lyon, France
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Abstract
For a computing process such as making a decision, a software controlled chip of several transistors is necessary. Inspired by how a single cell amoeba decides its movements, the theoretical 'tug of war' computing model was proposed but not yet implemented in an analogue device suitable for integrated circuits. Based on this model, we now developed a new electronic element for decision making processes, which will have no need for prior programming. The devices are based on the growth and shrinkage of Ag filaments in α-Ag2+δS gap-type atomic switches. Here we present the adapted device design and the new materials. We demonstrate the basic 'tug of war' operation by IV-measurements and Scanning Electron Microscopy (SEM) observation. These devices could be the base for a CMOS-free new computer architecture.
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Affiliation(s)
- C Lutz
- Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan.
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21
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Lutz C, Dalmay F, Ehkirch FP, Cucurulo T, Laporte C, Le Henaff G, Potel JF, Pujol N, Rochcongar G, Salledechou E, Seil R, Gunepin FX, Sonnery-Cottet B. Meniscectomy versus meniscal repair: 10 years radiological and clinical results in vertical lesions in stable knee. Orthop Traumatol Surg Res 2015; 101:S327-31. [PMID: 26439421 DOI: 10.1016/j.otsr.2015.09.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [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: 07/02/2015] [Accepted: 09/03/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Surgical management of meniscal lesion consists of either a meniscectomy or meniscal repair. Although repair offers immediate recovery after surgery, it is also associated with higher rates of revision. A meniscectomy, on the other hand is known to be associated with an early onset of osteoarthritis. The present study compared clinical and radiological results at 10 years between meniscectomy and meniscal repair in isolated vertical lesion in an otherwise stable knee. The hypothesis was that repair shows functional and radiological benefit over meniscectomy. PATIENTS AND METHOD A multi-centric retrospective comparative study of 32 patients (24 male, 8 female). Mean follow-up was 10.6 years (range, 10-13 years). There were 10 meniscal repairs (group R) and 22 meniscectomies (group M), in 17 right and 15 left knees. Mean age at surgery was 33.45±12.3 years (range, 9-47 years). There were 28 medial and 4 lateral meniscal lesions; 26 were in the red-red zone and 6 in red-white zone. RESULTS Functional score: KOOS score was significantly higher in group R than M on almost all parameters: 98±4.69 versus 77.38±21.97 for symptoms (P=0.0043), 96.89±7.20 versus 78.57±18.9 for pain (P=0.0052), 99.89±0.33 versus 80.88±19.6 for daily life activities (P=0.0002), 96.11±9.83 versus 54.05±32.85 for sport and leisure (P=0.0005), but 91±16.87 versus 68.15±37.7 for quality of life (P=0.1048). Radiology score: in group R, 7 patients had no features of osteoarthritis, and 2 had grade 1 osteoarthritis. In group M, 5 patients had grade 1 osteoarthritis, 10 grade 2, 3 grade 3 and 3 grade 4. Mean quantitative score was 0 (mean, 0.22±0.44) in-group R and 2 (mean, 2.19±0.98) in group M (P<0.0001). DISCUSSION At more than 10year's follow-up, functional scores were significantly better with meniscal repair than meniscectomy on all parameters of the KOOS scale except quality of life. Functional and radiological scores correlated closely. These results show that meniscal repair for vertical lesions in stable knees protects against osteoarthritis and is therefore strongly recommended. LEVEL OF EVIDENCE IV; retrospective study.
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Affiliation(s)
- C Lutz
- Clinique du Diaconat, 50, avenue des Vosges, 67000 Strabourg, France.
| | - F Dalmay
- 2, rue du Docteur-Marcland, 87025 Limoges cedex, France
| | - F P Ehkirch
- Clinique Maussins-Nollet, 67, rue de Romainville, 75019 Paris, France
| | - T Cucurulo
- 118, rue Jean-Mermoz, 13008 Marseille, France
| | - C Laporte
- CHU de Rennes, 2, rue Henri-Le-Guilloux, 35033 Rennes cedex 9, France
| | | | - J F Potel
- Medipôle, 45, rue de Gironis, 31036 Toulouse cedex 1, France
| | - N Pujol
- Centre hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France
| | - G Rochcongar
- Département d'orthopédie traumatologie, CHRU de Caen-Côte-de-Nacre, avenue de la Côte-de-Nacre, 14033 Caen cedex 9, France
| | - E Salledechou
- Département d'orthopédie traumatologie, CHRU de Caen-Côte-de-Nacre, avenue de la Côte-de-Nacre, 14033 Caen cedex 9, France
| | - R Seil
- Centre hospitalier de Luxembourg, 78, rue d'Eich, 1460 Luxembourg, Luxembourg
| | - F-X Gunepin
- Clinique Mutualiste, 3, rue Robert-de-la-Croix, 56324 Lorient cedex, France
| | - B Sonnery-Cottet
- Centre orthopédique Santy, 24, avenue Paul-Santy, 69008 Lyon, France
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Rochcongar G, Cucurulo T, Ameline T, Potel JF, Dalmay F, Pujol N, Sallé de Chou É, Lutz C, Ehkirch FP, Le Henaff G, Laporte C, Seil R, Gunepin FX, Sonnery-Cottet B. Meniscal survival rate after anterior cruciate ligament reconstruction. Orthop Traumatol Surg Res 2015; 101:S323-6. [PMID: 26602252 DOI: 10.1016/j.otsr.2015.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [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: 07/02/2015] [Accepted: 08/31/2015] [Indexed: 02/02/2023]
Abstract
BACKGROUND Meniscal suture provides well-documented benefits. Integrity of the cruciate ligaments of the knee is a prerequisite for meniscal healing. Nevertheless, reconstruction of the anterior cruciate ligament (ACL) does not consistently prevent recurrent tearing of a sutured meniscus. We evaluated meniscal survival rates, 5 and 10 years after meniscal suture concomitant with an ACL reconstruction. We compared the outcomes of these repaired menisci to those in which no menisci tears were detected during ACL reconstruction. METHODS In this multi-centric retrospective study, we included two groups. One group consists of patients who underwent a meniscal repair. This group was further divided into two subgroups based on whether follow-up was 5 years (n=76) or 10 years (n=39). The control group included 120 patients with normal menisci observed during surgery. We studied meniscal survival rates in each group, and we analyzed risk factors associated with the recurrence of meniscal lesions. RESULTS The 5-year meniscal survival rate was significantly higher in the control group than in the meniscal-repair group (95% vs. 80%, respectively; P=0.0029). The controls group also had a higher meniscal survival rate after 10 years, although the difference was not statistically significant (88% vs. 77%, P=0.07). A difference in knee laxity greater than 4mm was associated with a 5-fold increase in the risk of recurrent meniscal tears (P=0.0057). After 5 years, the risk of recurrence was higher for the medial than for the lateral meniscus, whereas after 10 years the difference was no longer statistically significant. DISCUSSION Although insufficient healing after meniscal suturing contributes to the risk of further meniscal tears, new lesions can develop in menisci that were undamaged at the time of ACL reconstruction. The risk of a new meniscal lesion is strongly associated with inadequate control of antero-posterior and rotational laxity. Some apparently "new menisci lesions" seems to have been missed during ACL reconstruction. LEVEL OF EVIDENCE IV, retrospective study.
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Affiliation(s)
- G Rochcongar
- Département d'orthopédie traumatologie, CHRU Caen - Côte-de-Nacre, avenue de la Côte-de-Nacre, 14033 Caen cedex 9, France.
| | - T Cucurulo
- 118, rue Jean-Mermoz, 13008 Marseille, France
| | - T Ameline
- Département d'orthopédie traumatologie, CHRU Caen - Côte-de-Nacre, avenue de la Côte-de-Nacre, 14033 Caen cedex 9, France
| | - J F Potel
- Medipôle, 45, rue de Gironis, 31036 Toulouse cedex 1, France
| | - F Dalmay
- 2, rue du Docteur-Marcland, 87025 Limoges cedex, France
| | - N Pujol
- Centre hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France
| | - É Sallé de Chou
- Département d'orthopédie traumatologie, CHRU Caen - Côte-de-Nacre, avenue de la Côte-de-Nacre, 14033 Caen cedex 9, France
| | - C Lutz
- Clinique du Diaconat, 50, avenue des Vosges, 67000 Strasbourg, France
| | - F P Ehkirch
- Clinique Maussins-Nollet, 67, rue de Romainville, 75019 Paris, France
| | | | - C Laporte
- CHU de Rennes, 2, rue Henri-Le-Guilloux, 35033 Rennes cedex 9, France
| | - R Seil
- Centre hospitalier de Luxembourg, 78, rue d'Eich, 1460 Luxembourg-Ville, Luxembourg, France
| | - F X Gunepin
- Clinique mutualiste, 3, rue Robert-de-la-Croix, 56324 Lorient cedex, France
| | - B Sonnery-Cottet
- Centre orthopédique Santy, 24, avenue Paul-Santy, 69008 Lyon, France
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Lutz C, Mozaffari M, Tosevski V, Caj M, Cippà P, McRae BL, Graff CL, Rogler G, Fried M, Hausmann M. Increased lymphocyte apoptosis in mouse models of colitis upon ABT-737 treatment is dependent upon BIM expression. Clin Exp Immunol 2015; 181:343-56. [PMID: 25845418 DOI: 10.1111/cei.12635] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 10/24/2014] [Revised: 03/02/2015] [Accepted: 03/10/2015] [Indexed: 01/27/2023] Open
Abstract
Exaggerated activation of lymphocytes contributes to the pathogenesis of inflammatory bowel disease (IBD). Medical therapies are linked to the BCL-2 family-mediated apoptosis. Imbalance in BCL-2 family proteins may cause failure in therapeutic responses. We investigated the role of BCL-2 inhibitor ABT-737 for lymphocyte apoptosis in mice under inflammatory conditions. B.6129P2-interleukin (IL)-10(tm1Cgn) /J (IL-10(-/-) ) weighing 25-30 g with ongoing colitis were used. Fifty mg/kg/day ABT-737 was injected intraperitoneally (i.p.). Haematological analyses were performed with an ADVIA 2120 flow cytometer and mass cytometry with a CyTOF 2. Following i.p. administration, ABT-737 was detected in both spontaneous and acute colitis in peripheral blood (PBL) and colon tissue. Treatment led to lymphopenia. CD4(+) CD44(+) CD62L(+) central memory and CD8(+) , CD44(+) CD62L(-) central memory T cells were decreased in PBL upon ABT-737 compared to vehicle-receiving controls. Increased apoptosis upon ABT-737 was determined in blood lymphocytes, splenocytes and Peyer's patches and was accompanied by a decrease in TNF and IL-1B. ABT-737 positively altered the colonic mucosa and ameliorated inflammation, as shown by colonoscopy, histology and colon length. A decreased BIM/BCL-2 ratio or absence of BIM in both Bim(-) (/) (-) and Il10(-) (/) (-) × Bim(-) (/) (-) impeded the protective effect of ABT-737. The BIM/BCL-2 ratio decreased with age and during the course of treatment. Thus, long-term treatment resulted in adapted TNF levels and macroscopic mucosal damage. ABT-737 was efficacious in diminishing lymphocytes and ameliorating colitis in a BIM-dependent manner. Regulation of inappropriate survival of lymphocytes by ABT-737 may provide a therapeutic strategy in IBD.
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Affiliation(s)
- C Lutz
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
| | - M Mozaffari
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
| | - V Tosevski
- Flow Cytometry Facility, University Zürich
| | - M Caj
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
| | - P Cippà
- Division of Nephrology, University Hospital Zurich, Switzerland
| | - B L McRae
- AbbVie Bioresearch Center, AbbVie Worcester, MA, USA
| | - C L Graff
- AbbVie Bioresearch Center, AbbVie Worcester, MA, USA
| | - G Rogler
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
| | - M Fried
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
| | - M Hausmann
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University Hospital Zurich
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Segets D, Yamamoto K, Lutz C, Mori Y, Peukert W. Processing Concepts for Small Nanoparticles: Classification on a Nanometer Scale by Tailoring Particle Interactions. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450571] [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: 11/10/2022]
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Swartz M, Fink G, Sarwar M, Hicks G, Lutz C, Taffet S, Jalife J. Serum Peptides for Collagen I and III Synthesis Predict Atrial Fibrillation Following Cardiac Surgery. Heart Rhythm 2011. [DOI: 10.1016/j.hrthm.2011.09.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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27
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Lutz C, Voelker W. Successful establishment of a training course for endoscopic vessel harvesting at INTUS. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269389] [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: 10/18/2022]
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Lutz C, Rosendahl U, Ennker J. Interventional care of a rare thoracic aortic aneurysm through a retroperitoneal approach. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269371] [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: 10/18/2022]
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Gupta AT, Hoffman D, Lutz C, Lutz GE. Poster 199: Radiculopathy Secondary to Diskal Cyst in the Adolescent Lumbar Spine: A Case Report. PM R 2010. [DOI: 10.1016/j.pmrj.2010.07.229] [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: 10/19/2022]
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Karnaugh RD, Hoffman D, Lutz C, Lutz GE, Muzin SC. Poster 127: Large Lumbar Disk Herniations: A Clinical Outcome Study of Nonsurgical Treatment. PM R 2010. [DOI: 10.1016/j.pmrj.2010.07.158] [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: 11/16/2022]
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Kang YJ, Lutz C, Hong SA, Sung DY, Lee JS, Shin JH, Nam HH, Cha GS, Meyerhoff ME. Development of a Fluoride-Selective Electrode based on Scandium(III) Octaethylporphyrin in a Plasticized Polymeric Membrane. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.6.1601] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
As fragments of first-order logic, Description logics (DLs) do not provide nonmonotonic features such as defeasible inheritance and default rules. Since many applications would benefit from the availability of such features, several families of nonmonotonic DLs have been developed that are mostly based on default logic and autoepistemic logic. In this paper, we consider circumscription as an interesting alternative approach to nonmonotonic DLs that, in particular, supports defeasible inheritance in a natural way. We study DLs extended with circumscription under different language restrictions and under different constraints on the sets of minimized, fixed, and varying predicates, and pinpoint the exact computational complexity of reasoning for DLs ranging from ALC to ALCIO and ALCQO. When the minimized and fixed predicates include only concept names but no role names, then reasoning is complete for NExpTime^NP. It becomes complete for NP^NExpTime when the number of minimized and fixed predicates is bounded by a constant. If roles can be minimized or fixed, then complexity ranges from NExpTime^NP to undecidability.
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Renner A, Sagstetter MR, Lutz C, Hamouda K, Schramm Y, Lazariotou M, Leyh RG, Gummert JF, Lange V. Influence of different vein preparation techniques in aorto-coronary-graft operation on the integrity of the endothelium. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191551] [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: 10/21/2022]
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Merriam J, Valenzuela A, Lake J, Bergstrom D, Chang B, Donahue LR, Johnson K, Lutz C, Rockwood S, Sasner M. The Jackson Laboratory Repository: New Mouse Models of Inflammation and Cancer/Immunology. FASEB J 2008. [DOI: 10.1096/fasebj.22.2_supplement.576] [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: 11/11/2022]
Affiliation(s)
| | | | - J Lake
- The Jackson LaboratoryBar HarborME
| | | | - B Chang
- The Jackson LaboratoryBar HarborME
| | | | | | - C Lutz
- The Jackson LaboratoryBar HarborME
| | | | - M Sasner
- The Jackson LaboratoryBar HarborME
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Abstract
Conjunctive queries play an important role as an expressive query language for Description Logics (DLs). Although modern DLs usually provide for transitive roles, conjunctive query answering over DL knowledge bases is only poorly understood if transitive roles are admitted in the query. In this paper, we consider unions of conjunctive queries over knowledge bases formulated in the prominent DL SHIQ and allow transitive roles in both the query and the knowledge base. We show decidability of query answering in this setting and establish two tight complexity bounds: regarding combined complexity, we prove that there is a deterministic algorithm for query answering that needs time single exponential in the size of the KB and double exponential in the size of the query, which is optimal. Regarding data complexity, we prove containment in co-NP.
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Neuburger S, Massenkeil G, Seibold M, Lutz C, Tamm I, le Coutre P, Graf B, Doerken B, Arnold R. Successful salvage treatment of disseminated cutaneous fusariosis with liposomal amphotericin B and terbinafine after allogeneic stem cell transplantation. Transpl Infect Dis 2008; 10:290-3. [PMID: 18194367 DOI: 10.1111/j.1399-3062.2007.00296.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Fusarium infections are associated with high mortality after allogeneic stem cell transplantation. We report on successful treatment of a disseminated cutaneous Fusarium proliferatum infection using liposomal amphotericin B and terbinafine. In vitro susceptibility tests of antifungal drugs suggest that terbinafine is a potent additional antifungal drug for disseminated cutaneous fusariosis.
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Affiliation(s)
- S Neuburger
- Department of Hematology and Oncology, Charité University Medicine Berlin, Campus Virchow-Klinikum, Berlin, Germany.
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Lutz C, Massenkeil G, Nagy M, Neuburger S, Tamm I, Rosen O, Dörken B, Arnold R. A pilot study of prophylactic donor lymphocyte infusions to prevent relapse in adult acute lymphoblastic leukemias after allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2008; 41:805-12. [DOI: 10.1038/sj.bmt.1705981] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
The Einstein relation connecting the diffusion constant and the mobility is violated beyond the linear response regime. For a colloidal particle driven along a periodic potential imposed by laser traps, we test the recent theoretical generalization of the Einstein relation to the nonequilibrium regime which involves an integral over measurable velocity correlation functions.
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Affiliation(s)
- V Blickle
- 2. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
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Massenkeil G, Nagy M, Neuburger S, Tamm I, Lutz C, le Coutre P, Rosen O, Wernecke KD, Dörken B, Arnold R. Survival after reduced-intensity conditioning is not inferior to standard high-dose conditioning before allogeneic haematopoietic cell transplantation in acute leukaemias. Bone Marrow Transplant 2005; 36:683-9. [PMID: 16113673 DOI: 10.1038/sj.bmt.1705123] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To assess the role of allogeneic stem cell transplantation (SCT) after reduced-intensity conditioning (RIC) in acute leukaemias, we retrospectively compared 25 patients with acute lymphoblastic leukaemia or acute myelogenous leukaemia after RIC to a historical group of 50 matched controls after high-dose conditioning. Engraftment, acute GvHD and severe infections were comparable in both groups. During the observation period, 1/25 patients (4%) after RIC and 14/50 (28%) after standard SCT died due to transplant-related causes; cumulative nonrelapse mortality (NRM) was 4% after RIC and 24% after standard SCT (P=0.029). In total, 15/25 patients (60%) relapsed after RIC and 20/50 (40%) after standard SCT; probability of disease-free survival (DFS) at 3 years was 43% after RIC and 49% after standard SCT (NS). Overall survival (OS) was 40% after RIC and 37% after standard SCT (NS). Stage of disease, cytogenetic risk profile, acute and chronic GvHD, chimerism status at day 90 and severe infections after transplantation were risk factors with significant impact on DFS and/or OS. In retrospective analysis, patients with acute leukaemias who receive RIC because of contraindications against standard SCT have a comparable outcome to standard SCT, but the higher relapse rate warrants further studies.
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Affiliation(s)
- G Massenkeil
- Department of Haematology and Oncology, Campus Virchow-Klinikum, Charité - University Medicine Berlin, Berlin, Germany.
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Neuburger S, Massenkeil G, Tamm I, Lutz C, Vidal C, Dörken B, Arnold R. Nichtinfektiöse pulmonale Komplikationen (NIPK) nach allogener Stammzelltransplantation (SCT) bei chronischer Graft-versus-Host-Erkrankung (cGvHD). Pneumologie 2005. [DOI: 10.1055/s-2005-864568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Meltzer E, Berkowitz R, Grossbard E, Gallet C, Dion S, Shaver S, Bazelmans D, Lutz C, Musser T. Effects of intranasal R112, an inhibitor of syk-kinase, on the symptoms of seasonal allergic rhinitis: A 2 day park study. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.569] [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: 11/25/2022]
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Arnold R, Lutz C, Neuburger S, Tamm I, Rosen O, Dörken B, Massenkeil G. Allogeneic stem cell transplantation (allo SCT) in adult ALL: Does prophylactic donor lymphocyte infusion (DLI) improve survival? Biol Blood Marrow Transplant 2005. [DOI: 10.1016/j.bbmt.2004.12.005] [Citation(s) in RCA: 2] [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: 11/17/2022]
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Spangler D, Berkowitz R, Shaver S, Lutz C, Bazelmans D, Wall G, Brubaker M, Drake M, Hogg L, Crenshaw K. Comparison of olopatadine nasal spray 0.6%, placebo and fluticasone propionate 0.05% in patients with Seasonal Allergic Rhinitis (SAR) symptoms. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.531] [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: 11/30/2022]
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Mulcahey MJ, Betz RR, Kozin SH, Smith BT, Hutchinson D, Lutz C. Implantation of the Freehand System during initial rehabilitation using minimally invasive techniques. Spinal Cord 2004; 42:146-55. [PMID: 15001979 DOI: 10.1038/sj.sc.3101573] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Series of four single subjects with and without intervention design. OBJECTIVES To describe a minimally invasive surgical technique used to implant the Freehand System during initial spinal cord injury (SCI) rehabilitation and to report rehabilitation outcomes of four recently injured adolescents using the Freehand System. SETTING Nonprofit children's hospital specializing in orthopedic and SCI care. METHODS Four subjects with C5 tetraplegia between 13 and 16 years of age and between 9 and 16 weeks following traumatic SCI underwent implantation of the Freehand System using minimally invasive surgical techniques. Outcomes on muscle strength, pinch force, hand function, performance of activities of daily living and satisfaction with and without the Freehand System were collected. RESULTS Each subject was successfully implanted with the Freehand System without perioperative complications and employed the Freehand System during therapy services and ad lib on the rehabilitation floor. At the last follow-up, every subject remained a motor candidate for the Freehand System. With the Freehand System, average lateral and palmar pinch force was 1.8 and 1.6 kg respectively; average pinch force without functional electrical stimulation (FES) was 0.29 kg. With the Freehand System, three subjects improved their rate of performance on The Upper Extremity Capabilities Questionnaire. All subjects increased their level of independence on The Quadriplegia Index of Function. On the Canadian Occupational Performance Measure (COPM) with the Freehand System, average performance and satisfaction scores improved for every patient. Three of the four subjects continued to use the system at home. CONCLUSION This case series demonstrates that the Freehand System can vastly improve hand function and performance of rehabilitation activities within days after a minimally invasive implant procedure during initial SCI rehabilitation. Satisfaction with the Freehand System beyond initial rehabilitation is evidenced by continued use at home.
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Affiliation(s)
- M J Mulcahey
- Shriners Hospitals for Children, Philadelphia, PA 19140, USA
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Pfahler M, Lutz C, Anetzberger H, Maier M, Hausdorf J, Pellengahr C, Refior HJ. Long-term results of high tibial osteotomy for medial osteoarthritis of the knee. Acta Chir Belg 2003; 103:603-6. [PMID: 14743568 DOI: 10.1080/00015458.2003.11679501] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We reviewed retrospectively the results in patients who had undergone one hundred and four high tibial lateral osteotomies. The operations were all performed between 1985 and 1993. Each one of fifty men and forty nine women demonstrated a varus deformity of the knee with a coexistent medial osteoarthritis. Results were reviewed in 49 patients (62 knees) with an average follow-up of 10.2 years (range 6-14 years). Of the remaining 42 patients, 8 were lost to follow-up, 10 had died, and 24 were subsequently treated with total knee arthroplasty at an average 4.7 years after having had a high tibial osteotomy. Clinical results were evaluated using the Hospital for Special Surgery Score (HSS) and the Knee Society Score. Radiographs were systematically analysed to evaluate osteoarthritis and leg axis. Forty four (90 per cent) of the forty nine patients stated the results met their expectations and given the same circumstances, they would have the operation once again. In these patients the knee score results were excellent. The same patients had excellent HSS and Knee Society Scores. Five patients (10 per cent) had a poor result and twenty four patients were treated later by total knee arthroplasty because of pain. The following factors set these patients apart from those with more favorable results: previous arthroscopic debridement, obesity, lateral knee osteoarthritis, insufficient valgus correction, and an age of more than 55 years. High tibial valgus osteotomy provides good pain relief and improved function in carefully selected patients. Our results support this conclusion.
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Affiliation(s)
- M Pfahler
- Department of Orthopaedics, Ludwig-Maximilians-University Munich, Klinikum Grosshadern, Munich, Germany.
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Lee MS, Cooper G, Lutz GE, Lutz C, Hong HM. Intradiscal electrothermal therapy (IDET) for treatment of chronic lumbar discogenic pain: a minimum 2-year clinical outcome study. Pain Physician 2003; 6:443-8. [PMID: 16871296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
OBJECTIVE To determine the long-term efficacy of IDET in the treatment of chronic lumbar discogenic pain. DESIGN Prospective case series clinical outcome study. METHODS IDET was performed on 62 consecutive patients with chronic discogenic pain of greater than 6 months duration and consecutively enrolled in a non-randomized prospective case series outcome study. Outcome measures included visual numeric pain scale (VNS) for low back (LB) and lower extremity (LE) pain, Roland-Morris disability scale (RM), and North American Spine Society (NASS) patient satisfaction index. Outcome success was defined as a change of more than 2 points on VNS and RM as well as a positive NASS satisfaction response. Data were collected at baseline and post-procedure at 1, 3, and 6 months and then annually for up to 4 years. RESULTS Fifty-one out of 62 patients (82%) were available for a minimum of 2-year follow-up. Average age was 41.4 years; average symptom duration was 46 months; and average follow-up was 34 months. Overall, there was statistically significant improvement in LB-VNS, RM, and LE pain scores of 3.2, 6.6, and 2.3 (p<0.001), respectively. Twenty-seven of 51 (53%) patients demonstrated clinically significant VNS and RM improvements of greater than 2. On NASS index, 63% (32/51) responded positively. Neither the number of disc levels treated nor the insurance status of patients made any difference in outcome. CONCLUSION IDET appears to be an effective treatment for chronic lumbar discogenic pain in a well-selected group of patients with favorable long-term outcome.
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Affiliation(s)
- Michael S Lee
- Hospital for Special Surgery, 535 East 70th St., New York, NY 10021, USA.
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Lutz C, Lutz GE, Cooke PM. Treatment of chronic lumbar diskogenic pain with intradiskal electrothermal therapy: a prospective outcome study. Arch Phys Med Rehabil 2003; 84:23-8. [PMID: 12589616 DOI: 10.1053/apmr.2003.50059] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To determine the clinical efficacy of intradiskal electrothermal annuloplasty in treating patients with chronic constant lumbar diskogenic pain who have not responded to at least 6 months of aggressive nonoperative care. DESIGN Prospective case series. SETTING Academic-affiliated private physiatry practice. PARTICIPANTS Thirty-three patients with chronic constant lumbar diskogenic pain of more than 6 months in duration diagnosed with history and physical examination, with concordant pain on provocative pressure-controlled lumbar diskography, and with symptomatic annular tears and/or protrusions less than 5mm, who did not respond to aggressive nonoperative care. INTERVENTION Intradiskal electrothermal annuloplasty. MAIN OUTCOME MEASURES Visual analog scale (VAS) pain scores for the back and for the lower extremity, the Roland-Morris Disability Questionnaire (RMDQ), and the North American Spine Society Patient Satisfaction Index. RESULTS A total of 33 patients, with mean age of 40 years and a mean duration of symptoms of 46 months, were observed with a mean follow-up of 15 months. Relief of pain and improvement in physical function were associated with a mean change in the VAS score of 3.9 (P<.001), a mean change in the lower-extremity VAS score of 3.7 (P<.001), and a mean change in the RMDQ of 7.3 (P<.001). For patient satisfaction, 75.7% reported that they would undergo the same procedure for the same outcome. Complete pain relief was achieved in 24% of the patients, and partial pain relief in 46% of the patients. CONCLUSIONS Intradiskal electrothermal annuloplasty offers a safe, minimally invasive treatment option for carefully selected patients with chronic lumbar diskogenic pain who have not responded to aggressive nonoperative care.
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Affiliation(s)
- Christopher Lutz
- Physiatry Service, Hospital for Special Surgery, New York, NY 10021, USA
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Auerbach DJ, Paul W, Bakker AF, Lutz C, Rudge WE, Abraham FF. A special purpose parallel computer for molecular dynamics: motivation, design, implementation, and application. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100303a004] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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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Abstract
Fusions are a simple way of combining logics. For normal modal logics, fusions have been investigated in detail. In particular, it is known that, under certain conditions, decidability transfers from the component logics to their fusion. Though description logics are closely related to modal logics, they are not necessarily normal. In addition, ABox reasoning in description logics is not covered by the results from modal logics. In this paper, we extend the decidability transfer results from normal modal logics to a large class of description logics. To cover different description logics in a uniform way, we introduce abstract description systems, which can be seen as a common generalization of description and modal logics, and show the transfer results in this general setting.
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Abstract
Efforts to explain why some neuropsychologists are more accurate than others have been unsuccessful. In the present study, the relation between the cognitive complexity of clinicians and the validity of their judgments was investigated. Forty-two neuropsychologists completed a measure of cognitive complexity. The hypothesis that neuropsychologists who are high in cognitive complexity will be more accurate than those who are low in cognitive complexity was not supported. It is not clear why cognitive complexity was not significantly related to the validity of diagnostic ratings: One explanation is that the measure of cognitive complexity used in this study was inadequate but another possibility is that neuropsychologists who are low in cognitive complexity may still be able to achieve high levels of accuracy if they attend to normative data when they interpret test results.
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Affiliation(s)
- H N Garb
- Pittsburgh VA Health Care System, and University of Pittsburgh, USA.
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