26
|
Nordestgaard AT, Thomsen M, Nordestgaard BG. Coffee intake and risk of obesity, metabolic syndrome and type 2 diabetes: a Mendelian randomization study. Int J Epidemiol 2015; 44:551-65. [DOI: 10.1093/ije/dyv083] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2015] [Indexed: 11/14/2022] Open
|
27
|
Schmidt M, Thomsen M, Kelber O, Kraft K. Myths and facts in herbal medicines: Eleutherococcus senticosus (Siberian ginseng) and its contraindication in hypertensive patients. ACTA ACUST UNITED AC 2014. [DOI: 10.2147/btat.s60734] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
28
|
Nadorf J, Thomsen M, Gantz S, Sonntag R, Kretzer JP. Fixation of the shorter cementless GTS™ stem: biomechanical comparison between a conventional and an innovative implant design. Arch Orthop Trauma Surg 2014; 134:719-26. [PMID: 24522862 DOI: 10.1007/s00402-014-1946-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Conventional cementless total hip arthroplasty already shows very good clinical results. Nevertheless, implant revision is often accompanied by massive bone loss. The new shorter GTS™ stem has been introduced to conserve femoral bone stock. However, no long-term clinical results were available for this implant. A biomechanical comparison of the GTS™ stem with the clinically well-established CLS(®) stem was therefore preformed to investigate the targeted stem philosophy. MATERIALS AND METHODS Four GTS™ stems and four CLS(®) stems were implanted in a standardized manner in eight synthetic femurs. A high-precision measuring device was used to determine micromotions of the stem and bone during different load applications. Calculation of relative micromotions at the bone-implant interface allowed the rotational implant stability and the bending behavior of the stem to be determined. RESULTS Lowest relative micromotions were detected near the lesser trochanter within the proximal part of both stems. Maximum relative micromotions were measured near the distal tip of the stems, indicating a proximal fixation of both stems. For the varus-valgus-torque application, a comparable stem bending behavior was shown for both stems. CONCLUSION Both stems seem to provide a comparable and adequate primary stability. The shortened GTS™ design has a comparable rotational stability and bone-implant flexibility compared to a conventional stem. This study demonstrates that the CLS(®) stem and the GTS™ stem exhibit similar biomechanical behavior. However, a clinical confirmation of these experimental results is still required.
Collapse
|
29
|
Thomsen M, Kretzer JP, Krenn V, Thomas P. [Different symptoms in patients with prostheses with metal-metal bearings]. DER ORTHOPADE 2014; 42:637-42. [PMID: 23907450 DOI: 10.1007/s00132-012-2037-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Based on several clinical case examples, this article demonstrates the different symptoms and complications in patients fitted with prostheses with metal-on-metal (MoM) bearings. We recommend an annual clinical control for patients with MoM prostheses with a prosthesis head size of 36 mm or larger. In patients who have problems tests should be carried out to measure the metal ion levels of cobalt and chromium and the metal artifact-reduced sequence by magnetic resonance imaging (MRI) or if this is not possible an ultrasound investigation. The clinical investigations should specifically target asymptomatic local swellings or hardened sites and patients should be questioned on problems with general hypersensitivity reactions (skin rash), cardiomyopathy, neurological changes including sensory changes, renal function impairment and thyroid dysfunction.
Collapse
|
30
|
Krenn V, Morawietz L, Kienapfel H, Ascherl R, Matziolis G, Hassenpflug J, Thomsen M, Thomas P, Huber M, Schuh C, Kendoff D, Baumhoer D, Krukemeyer MG, Perino G, Zustin J, Berger I, Rüther W, Poremba C, Gehrke T. [Revised consensus classification. Histopathological classification of diseases associated with joint endoprostheses]. Z Rheumatol 2014; 72:383-92. [PMID: 23446461 DOI: 10.1007/s00393-012-1099-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The revised classification of the periprosthetic membrane (synovial-like interface membrane SLIM) encompasses all pathological alterations which can occur as a result of endoprosthetic replacement of major joints and lead to a reduction in durability of prostheses. This also includes the established consensus classification of SLIM by which aseptic and septic prosthetic loosening can be subdivided into four histological types and histopathological criteria for additional pathologies: endoprosthesis-associated arthrofibrosis, immunological/allergic alterations and osseous pathologies. This revision represents the foundation for the histopathological diagnostics of the total spectrum of diseases associated with joint prostheses, is a suitable basis for a standardized diagnostic procedure and etiological clarification of endoprosthesis failure and also as a data standard for endprosthesis registers, in particular for registers based on routine data (e.g. German endoprosthesis register).
Collapse
|
31
|
Krenn V, Poremba C, Schneider J, Kendoff D, Gehrke T, Kretzer J, Thomsen M, Huber M. Erratum zu: Histopathologische Differenzialdiagnostik bei gelenkimplantallergischen Fragestellungen. DER ORTHOPADE 2013. [DOI: 10.1007/s00132-013-2195-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
32
|
Welsh IC, Thomsen M, Gludish DW, Alfonso-Parra C, Bai Y, Martin JF, Kurpios NA. Integration of left-right Pitx2 transcription and Wnt signaling drives asymmetric gut morphogenesis via Daam2. Dev Cell 2013; 26:629-44. [PMID: 24091014 PMCID: PMC3965270 DOI: 10.1016/j.devcel.2013.07.019] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 06/23/2013] [Accepted: 07/26/2013] [Indexed: 02/06/2023]
Abstract
A critical aspect of gut morphogenesis is initiation of a leftward tilt, and failure to do so leads to gut malrotation and volvulus. The direction of tilt is specified by asymmetric cell behaviors within the dorsal mesentery (DM), which suspends the gut tube, and is downstream of Pitx2, the key transcription factor responsible for the transfer of left-right (L-R) information from early gastrulation to morphogenesis. Although Pitx2 is a master regulator of L-R organ development, its cellular targets that drive asymmetric morphogenesis are not known. Using laser microdissection and targeted gene misexpression in the chicken DM, we show that Pitx2-specific effectors mediate Wnt signaling to activate the formin Daam2, a key Wnt effector and itself a Pitx2 target, linking actin dynamics to cadherin-based junctions to ultimately generate asymmetric cell behaviors. Our work highlights how integration of two conserved cascades may be the ultimate force through which Pitx2 sculpts L-R organs.
Collapse
|
33
|
Thomsen M, Wartberg L, Thomasius R. Die Behandlung von pathologischem Internetgebrauch bei Jugendlichen - Pilotdaten zur Wirksamkeit eines ambulanten Gruppenprogramms. SUCHTTHERAPIE 2013. [DOI: 10.1055/s-0033-1351596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
34
|
Thomsen M. [Update on implant allergies]. DER ORTHOPADE 2013; 42:596. [PMID: 23867889 DOI: 10.1007/s00132-012-2031-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
|
35
|
Ruyssen-Witrand A, Constantin A, Cambon-Thomsen A, Thomsen M. New insights into the genetics of immune responses in rheumatoid arthritis. ACTA ACUST UNITED AC 2013; 80:105-18. [PMID: 22835281 DOI: 10.1111/j.1399-0039.2012.01939.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rheumatoid arthritis (RA) is a common autoimmune disease with a strong genetic component. Numerous aberrant immune responses have been described during the evolution of the disease. In later years, the appearance of anti-citrullinated protein antibodies (ACPAs) has become a hallmark for the diagnosis and prognosis of RA. The post-translational transformation of arginine residues of proteins and peptides into citrulline (citrullination) is a natural process in the body, but for unknown reasons autoreactivity towards citrullinated residues may develop in disposed individuals. ACPAs are often found years before clinical manifestations. ACPAs are present in about 70% of RA patients and constitute an important disease marker, distinguishing patient groups with different prognoses and different responses to various treatments. Inside the human leukocyte antigen (HLA) region, some HLA-DRB1 alleles are strongly associated with their production. Genome-wide association studies in large patient cohorts have defined a great number of single nucleotide polymorphisms (SNPs) outside of the HLA region that are associated with ACPA positive (ACPA+) RA. The SNPs are generally located close to or within genes involved in the immune response or signal transduction in immune cells. Some environmental factors such as tobacco smoking are also positively correlated with ACPA production. In this review, we will describe the genes and loci associated with ACPA+ RA or ACPA- RA and attempt to clarify their potential role in the development of the disease.
Collapse
|
36
|
Thomsen M. [Needs for assistance are not a nursing problem - a definition of terms: an unresolved task]. PFLEGE ZEITSCHRIFT 2013; 66:110-112. [PMID: 23444814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
|
37
|
Krenn V, Ruppert M, Knöß P, Kendoff D, Poremba C, Thomsen M, Skutek M, Hassenpflug J, Ascherl R, Krukemeyer M, Matziolis G, Thomas P, Gehrke T. Synovialitis vom arthrofibrotischen Typ. Z Rheumatol 2012; 72:270-8. [DOI: 10.1007/s00393-012-1076-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
38
|
Thomsen M. [In focus: nursing care responsibilities and refinancing professional nursing services. No vast reserve army]. PFLEGE ZEITSCHRIFT 2012; 65:754-757. [PMID: 23330281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
|
39
|
Thomsen M, Poulsen M, Bech M, Velroyen A, Herzen J, Beckmann F, Feidenhans'l R, Pfeiffer F. Visualization of subcutaneous insulin injections by x-ray computed tomography. Phys Med Biol 2012; 57:7191-203. [PMID: 23060123 DOI: 10.1088/0031-9155/57/21/7191] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We report how the three-dimensional structure of subcutaneous injections of soluble insulin can be visualized by x-ray computed tomography using an iodine based contrast agent. The injections investigated are performed ex vivo in porcine adipose tissue. Full tomography scans carried out at a laboratory x-ray source with a total acquisition time of about 1 min yield CT-images with an effective pixel size of 109 × 109 μm². The depots are segmented using a modified Chan-Vese algorithm and we are able to observe differences in the shape of the injection depot and the position of the depot in the skin among equally performed injections. To overcome the beam hardening artefacts, which affect the quantitative prediction of the volume injected, we additionally present results concerning the visualization of two injections using synchrotron radiation. The spatial concentration distribution of iodine is calculated to show the dilution of the insulin drug inside the depot. Characterisation of the shape of the depot and the spatial concentration profile of the injected fluid is important knowledge when improving the clinical formulation of an insulin drug, the performance of injection devices and when predicting the effect of the drug through biomedical simulations.
Collapse
|
40
|
Nielsen MS, Lauridsen T, Thomsen M, Jensen TH, Bech M, Christensen LB, Olsen EV, Hviid M, Feidenhans'l R, Pfeiffer F. X-ray tomography using the full complex index of refraction. Phys Med Biol 2012; 57:5971-9. [PMID: 22964788 DOI: 10.1088/0031-9155/57/19/5971] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We report on x-ray tomography using the full complex index of refraction recorded with a grating-based x-ray phase-contrast setup. Combining simultaneous absorption and phase-contrast information, the distribution of the full complex index of refraction is determined and depicted in a bivariate graph. A simple multivariable threshold segmentation can be applied offering higher accuracy than with a single-variable threshold segmentation as well as new possibilities for the partial volume analysis and edge detection. It is particularly beneficial for low-contrast systems. In this paper, this concept is demonstrated by experimental results.
Collapse
|
41
|
Sergi C, Willig F, Thomsen M, Otto HF, Krempien B. Bronchopneumonia disguising lung metastases of a painless central chondrosarcoma of pubis. Pathol Oncol Res 2012; 3:211-4. [PMID: 18470732 DOI: 10.1007/bf02899923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/1997] [Accepted: 09/04/1997] [Indexed: 11/27/2022]
Abstract
Chondrosarcoma is a generally locally malignant chondroid-forming bone tumor with a low potential for distant metastases. A small and completely painless central chondrosarcoma of pubis metastasizing to the lungs in a 63-year-old woman with bronchopneumonia is reported. Here we emphasize the mimicry and low growth of the chondrosarcoma and the easiness with which the diagnosis in completely asymptomatic patients can be missed. Although painless chondrosarcoma metastasizing to lung is rather rare, this tumor should be always included in the differential diagnosis of malignancies in this age category.
Collapse
|
42
|
Szego K, Nemeth Z, Erdos G, Foldy L, Bebesi Z, Thomsen M, Delapp D. Location of the magnetodisk in the nightside outer magnetosphere of Saturn near equinox based on ion densities. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012ja017817] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Schmidt M, Thomsen M, Schmidt U. Suitability of Ivy Extract for the Treatment of Paediatric Cough. Phytother Res 2012; 26:1942-7. [DOI: 10.1002/ptr.4671] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 02/08/2012] [Accepted: 02/15/2012] [Indexed: 12/12/2022]
|
44
|
Thomsen M. [A plea for respect for patients with dementia. The good fortune of the Alzheimer patient]. PFLEGE ZEITSCHRIFT 2012; 65:157-159. [PMID: 22509709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
|
45
|
Thomsen M, Dahl M, Tybjaerg-Hansen A, Nordestgaard BG. β2 -adrenergic receptor Thr164IIe polymorphism, blood pressure and ischaemic heart disease in 66 750 individuals. J Intern Med 2012; 271:305-14. [PMID: 21883537 DOI: 10.1111/j.1365-2796.2011.02447.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The β(2) -adrenergic receptor (ADRB2) is located on smooth muscle cells and is an important regulator of smooth muscle tone. The Thr164Ile polymorphism (rs1800888) in the ADRB2 gene is rare but has profound functional consequences on receptor function and could cause lifelong elevated smooth muscle tone. We tested the hypothesis that Thr164Ile is associated with increased blood pressure, increased frequency of hypertension and increased risk of cardiovascular disease (CVD). SUBJECTS A total of 66 750 individuals from two large Danish general population studies were genotyped, and 1943 Thr164Ile heterozygotes and 16 homozygotes were identified. RESULTS Thr164Ile genotype was associated with increased systolic and diastolic blood pressure in women (trend: P = 0.04 and 0.02): systolic and diastolic blood pressure increased by 5% and 2%, respectively, in female homozygotes compared with female noncarriers. All female Thr164Ile homozygotes had hypertension compared with 58% of female heterozygotes and 54% of female noncarriers (chi-square: P = 0.001). Female Thr164Ile homozygotes and heterozygotes had odds ratios for ischaemic heart disease (IHD) of 2.93 (0.56-15.5) and 1.28 (1.03-1.61), respectively, compared with female noncarriers (trend: P = 0.007). These differences were not observed in men. Furthermore, Gly16Arg (rs1042713) and Gln27Glu (rs1042714) in the ADRB2 gene were not associated with blood pressure, hypertension or CVD either in the population overall or in women and men separately. CONCLUSIONS ADRB2 Thr164Ile is associated with increased blood pressure, increased frequency of hypertension and increased risk of IHD amongst women in the general population. These findings, particularly for homozygotes, are novel.
Collapse
|
46
|
Thomsen M, Nordestgaard BG, Sethi AA, Tybjærg-Hansen A, Dahl M. β2-adrenergic receptor polymorphisms, asthma and COPD: two large population-based studies. Eur Respir J 2011; 39:558-66. [PMID: 22075484 DOI: 10.1183/09031936.00023511] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The β(2)-adrenergic receptor (ADRB2) is an important regulator of airway smooth muscle tone. We tested the hypothesis that three functional polymorphisms in the ADRB2 gene (Thr164Ile, Gly16Arg and Gln27Glu) are associated with reduced lung function, asthma or chronic obstructive pulmonary disease (COPD). We first genotyped 8,971 individuals from the Copenhagen City Heart Study for all three polymorphisms. To validate our findings, we genotyped an additional 53,777 individuals from the Copenhagen General Population Study for the Thr164Ile polymorphism. We identified 60,910 Thr164Ile noncarriers, 1,822 heterozygotes and 16 homozygotes. In the Copenhagen City Heart Study, the Thr164Ile genotype was associated with reduced forced expiratory volume in 1 s (FEV(1)) % predicted (trend p = 0.01) and FEV(1)/forced vital capacity (FVC) (p = 0.001): Thr164Ile heterozygotes had 3% and 2% reduced FEV(1) % pred and FEV(1)/FVC, respectively, compared with noncarriers. The odds ratio for COPD in Thr164Ile heterozygotes was 1.46 (95% CI 1.05-2.02). In the Copenhagen General Population Study, the Thr164 genotype associated with reduced FEV(1) % pred (p = 0.04) and FEV(1)/FVC (p < 0.001): Thr164Ile homozygotes and heterozygotes had 7% and 1% reduced FEV(1) % pred and 6% and 1% reduced FEV(1)/FVC, respectively, compared with noncarriers. The odds ratios for COPD in Thr164Ile homozygotes and heterozygotes were 4.53 (95% CI 1.54-13.3) and 1.07 (95% CI 0.92-1.25), respectively. Our results suggest that ADRB2 Thr164Ile is associated with reduced lung function and increased risk of COPD in the general population.
Collapse
|
47
|
Salesman JB, Thomsen M. Smooth Brome (Bromus inermis) in Tallgrass Prairies: A Review of Control Methods and Future Research Directions. ECOL RESTOR 2011. [DOI: 10.3368/er.29.4.374] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
48
|
Szego K, Nemeth Z, Erdos G, Foldy L, Thomsen M, Delapp D. The plasma environment of Titan: The magnetodisk of Saturn near the encounters as derived from ion densities measured by the Cassini/CAPS plasma spectrometer. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja016629] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
49
|
Sillanpää I, Young DT, Crary F, Thomsen M, Reisenfeld D, Wahlund JE, Bertucci C, Kallio E, Jarvinen R, Janhunen P. Cassini Plasma Spectrometer and hybrid model study on Titan's interaction: Effect of oxygen ions. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011ja016443] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
50
|
Schmidt M, Thomsen M, Bone K. Tribulus terrestis-induced nephrotoxicity? Nephrol Dial Transplant 2011; 26:3065-6; author reply 3066-7. [DOI: 10.1093/ndt/gfr325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|