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Wiesbaden, Germany

Kammerer W.,Dr. Horst Schmidt Kliniken
Arzneimitteltherapie | Year: 2012

CYP2C19 is involved in the metabolism of some important drugs. Among these are clopidogrel, all proton pump inhibitors, some antidepressive and antipsychotic drugs. Metabolism of these substrates can be significantly altered due to inhibition or induction of CYP2C19 and polymorphisms in the CYP2C19 gene. Substrates, inhibitors and inducers of CYP2C19 and relevant genetic polymorphisms are reviewed and the clinically relevant drug drug interactions are demonstrated.

Poddubnyy D.,Charite Campus Benjamin Franklin | Rudwaleit M.,Evangelisches Krankenhaus Hagen Haspe | Haibel H.,Charite Campus Benjamin Franklin | Listing J.,German Rheumatism Research Center | And 4 more authors.
Annals of the Rheumatic Diseases | Year: 2011

Objective: To assess the progression of radiographic sacroiliitis in a cohort of patients with early axial spondyloarthritis over a period of 2 years and to explore predictors of progression. Methods: 210 patients with axial spondyloarthritis from the German Spondyloarthritis Inception Cohort have been selected for this analysis based on availability of radiographs at baseline and after 2 years of follow-up. Radiographs were centrally digitised and the sacroiliac joints were scored independently according to the grading system of the modified New York criteria for ankylosing spondylitis (AS) by two trained readers. The readers scored both time points simultaneously but were blinded for the time point and for all clinical data. Results: 115 patients (54.8%) fulfilled the modified New York criteria for AS in their radiographic part in the opinion of both readers at baseline, while 95 patients (45.2%) were classified as non-radiographic axial spondyloarthritis. More patients with non-radiographic spondyloarthritis (10.5%) compared with AS (4.4%) showed an estimated 'true' progression by at least one grade according to both readers, although the difference between the two groups was statistically non-significant. The rate of progression from non-radiographic axial spondyloarthritis to AS was 11.6% over 2 years. An elevated level of C-reactive protein (CRP) at baseline was a strong positive predictor of radiographic sacroiliitis progression in non-radiographic axial spondyloarthritis and AS (OR 3.65 and 5.08, respectively, p<0.05). Conclusion: Progression of radiographic sacroiliitis by at least one grade after 2 years occurs only in a small percentage of patients with early axial spondyloarthritis. An elevated level of CRP was found to be a strong positive predictor of sacroiliitis progression.

Poddubnyy D.,Charite - Medical University of Berlin | Rudwaleit M.,Endokrinologikum | Haibel H.,Charite - Medical University of Berlin | Listing J.,German Rheumatism Research Center | And 4 more authors.
Annals of the Rheumatic Diseases | Year: 2012

Objective: To investigate the influence of non-steroidal anti-inflammatory drugs (NSAIDs) intake on radiographic spinal progression over 2 years in patients with ankylosing spondylitis (AS) and non-radiographic axial spondyloarthritis (SpA). Methods: 164 patients with axial SpA (88 with AS and 76 with non-radiographic axial SpA) were selected for this analysis based on availability of spinal radiographs at baseline and after 2 years of follow-up and the data on NSAIDs intake. Spinal radiographs were scored by two trained readers in a concealed randomly selected order according to the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS) system. An index of the NSAID intake counting both dose and duration of drug intake was calculated. Results: High NSAIDs intake (NSAID index≥50) in AS was associated with lower likelihood of significant radiographic progression defined as an mSASSS worsening by ≥2 units: OR=0.15, 95% CI 0.02 to 0.96, p=0.045 (adjusted for baseline structural damage, elevated C reactive protein (CRP) and smoking status) in comparison with patients with low NSAIDs intake (NSAID index<50). This effect was most pronounced in patients with baseline syndesmophytes plus elevated CRP: mean mSASSS progression was 4.36±4.53 in patients with low NSAIDs intake versus 0.14±1.80 with high intake, p=0.02. In non-radiographic axial SpA, no significant differences regarding radiographic progression between patients with high and low NSAIDs intake were found. Conclusion: A high NSAIDs intake over 2 years is associated with retarded radiographic spinal progression in AS. In non-radiographic axial SpA this effect is less evident, probably due to a low grade of new bone formation in the spine at this stage..

Hoeh A.E.,University of Heidelberg | Pollithy S.,University of Heidelberg | Dithmar S.,Dr. Horst Schmidt Kliniken
Graefe's Archive for Clinical and Experimental Ophthalmology | Year: 2015

Purpose: To evaluate the effect of patient-associated factors on the minimum laser power needed for a mild visible burn in focal laser treatments using the 532 nm Navilas laser system. Methods: We conducted a monocentric prospective pilot study of 58 eyes of 40 patients with diabetic macular edema. The following parameters were analysed: axial length, refraction, iris pigmentation, lens status, lens grading and densitometry, retinal and choroidal thickness and focus setting during treatment. Laser power was adjusted to produce mild, barely visible burns. Retinal laser burn size was measured 30 min after treatment. Results: Focus setting is significantly correlated with retinal lesion size (r = 0.50, p = 0.001) and laser power (r = 0.44, p < 0.001). Axial length only correlated with laser power when the effect of focus was controlled. Phakic eyes needed more laser power than pseudophakic eyes (78.3 versus 67.2 mW, p = 0.051). No correlation of laser power with any other factor could be found. Conclusions: Among the examined parameters, focus setting had the strongest effect on the laser power needed to produce a mild visible burn. The association of focus with laser power can be explained by the focus-dependent change of retinal spot size. Lens status (phakic versus pseudophakic patients) seems to influence laser light transmission in the examined age group. © 2014, Springer-Verlag Berlin Heidelberg.

Dieckmann K.-P.,Albertinen Krankenhaus | Wilken S.,Albertinen Krankenhaus | Loy V.,Vivantes MVZ Am Urban | Matthies C.,Bundeswehrkrankenhaus Hamburg | And 6 more authors.
Annals of Oncology | Year: 2013

Background: The treatment of testicular intraepithelial neoplasia (TIN), the progenitor of testicular germ cell tumours (GCTs), is based on little data. Patients and methods: Two hundred and twenty-eight GCT patients with contralateral TIN were retrospectively enrolled. Ten had surveillance, 122 radiotherapy to testis with 18-20 Gy, 30 cisplatin-based chemotherapy (two cycles), 51 chemotherapy (three cycles), and 15 carboplatin. The study end point was a malignant event (ME), defined as detection of TIN upon control biopsy or occurrence of a second GCT. The Secondary end point was hypogonadism during follow-up. Results: Numbers, proportions of ME, and median event-free survival (EFS) times were: radiotherapy N = 3, 2.5%, 11.08 years; chemotherapy (two cycles) N = 15, 50%, 3.0 years; chemotherapy (three cycles) N = 12, 23.5%, 9.83 years; carboplatin N = 10, 66%, 0.9 years; surveillance N = 5, 50%, 7.08 years. EFS is significantly different among the groups. Hypogonadism rates were in radiotherapy patients 30.8%, chemotherapy (two cycles) 13%, chemotherapy (three cycles) 17.8%, carboplatin 40%, surveillance 40%. Conclusions: Local radiotherapy is highly efficacious in curing TIN. Chemotherapy is significantly less effective and the cure rates are dose-dependent. Though hypogonadism occurs in one-third of patients, radiotherapy with 20 Gy remains the standard management of TIN. © The Author 2013. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved.

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