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1.
Z Rheumatol ; 2024 Apr 30.
Article in English | MEDLINE | ID: mdl-38689038

ABSTRACT

BACKGROUND: Real-world data for filgotinib, a Janus kinase (JAK)1 inhibitor, are limited in patients with rheumatoid arthritis (RA). OBJECTIVES: To explore real-world filgotinib use in patients with RA in Germany. MATERIALS AND METHODS: This retrospective chart review included patients aged ≥ 18 years with confirmed moderate to severe RA who initiated filgotinib before December 1, 2021, with ≥ 6 months of medical records available prior to filgotinib initiation or after initial diagnosis. Patient characteristics, prior treatments, reasons for initiating/discontinuing filgotinib, disease activity, dose adjustments and concomitant treatments were recorded. RESULTS: In total, 301 patients from 20 German rheumatology outpatient units were included. One-third were aged ≥ 65 years and almost half had ≥ 1 cardiovascular (CV) risk factor. Most patients initiated filgotinib as monotherapy (83.7%; 12.7% of whom with glucocorticoids) and at the 200 mg dose (84.7%); higher proportions of those initiating the 100 versus 200 mg dose were aged ≥ 65 years and had renal impairment or ≥ 1 CV risk factor. Oral administration (78.4%), fast onset of action (66.8%) and administration as monotherapy (65.4%) were the most common reasons for initiating filgotinib. At 12 months, 41 (18.4%) patients had discontinued filgotinib, most commonly due to lack of effectiveness. After 6­months of follow-up, 36.8% of patients had achieved Clinical Disease Activity Index (CDAI) remission and 45.6% had achieved CDAI low disease activity. CONCLUSIONS: In clinical practice in Germany, reasons for initiating filgotinib in patients with RA were related to dosing flexibility and general JAK inhibitor attributes. Filgotinib was used predominantly as monotherapy and was effective and generally well tolerated; however, longer-term data in larger, prospective cohorts are needed.

2.
Rheumatol Ther ; 10(6): 1555-1574, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37747626

ABSTRACT

INTRODUCTION: This post hoc analysis of the phase 3 rheumatoid arthritis (RA) filgotinib clinical trial program assessed the effect of filgotinib on body mass index (BMI) in patients with RA and the impact of BMI on the efficacy and safety of filgotinib. METHODS: FINCH 1-3 were randomized, double-blind, active- or placebo-controlled phase 3 trials of filgotinib 100 and 200 mg in patients with RA (N = 3452). BMI assessments included the mean change from baseline in BMI and the proportion of patients whose BMI increased by incremental thresholds. Efficacy measures included American College of Rheumatology (ACR) 20/50/70 response and low disease activity/remission according to Disease Activity Score 28 using C-reactive protein. The exposure-adjusted incident rate (EAIR) of adverse events (AEs) was assessed by baseline BMI, using integrated data from the FINCH 1-4 and the phase 2 DARWIN 1-3 studies (total filgotinib exposure = 8085 patient-years). RESULTS: Mean change from baseline in BMI over time was similar across treatment arms. In most patients, BMI increased by ≤ 1 or 2 kg/m2 at both weeks 12 and 24, regardless of treatment group or baseline BMI; few patients had increases of ≥ 4 kg/m2. For most efficacy measures, filgotinib 200 mg was more efficacious than filgotinib 100 mg or active comparators or placebo across BMI subgroups. For the higher filgotinib dose, the EAIR of serious treatment-emergent AEs, venous thrombotic and embolic events, and major adverse cardiovascular events increased with increasing BMI. CONCLUSIONS: Filgotinib did not lead to substantial changes in BMI, and BMI did not appear to affect the efficacy of filgotinib. TRIAL REGISTRATION: ClinicalTrials.gov identifiers: NCT02889796, NCT02873936, NCT02886728, NCT03025308, NCT01888874, NCT01894516, NCT02065700.


Some rheumatoid arthritis treatments cause patients to gain weight or are less effective in patients with obesity than in patients without obesity. Also, obesity can make rheumatoid arthritis worse. Filgotinib is a rheumatoid arthritis treatment that was evaluated in seven randomized clinical studies (FINCH 1­4 and DARWIN 1­3). We investigated whether filgotinib causes changes in weight and whether body mass index (BMI) affects the efficacy or safety of filgotinib. We analyzed how the BMI of patients who participated in FINCH 1, 2, or 3 changed over time. Most patients had a small increase in BMI (around 1­2 kg/m2) after 24 weeks of filgotinib treatment. This change in BMI was not affected by patients' BMI at baseline. Baseline BMI did not impact the efficacy of filgotinib, which was assessed using standard measures of disease activity. Filgotinib was more effective than other rheumatoid arthritis treatments and placebo in all patients, regardless of BMI subgroup. Using safety data from all seven clinical studies (FINCH 1­4 and DARWIN 1­3), we found that some adverse events occurred more often in patients with obesity (a BMI of ≥ 30 kg/m2) than in those without obesity. The increased adverse events included venous thrombotic and embolic events and major adverse cardiovascular events, for which obesity is a known risk factor. These results show that filgotinib did not substantially change BMI (which increased by around 1­2 kg/m2 in most patients), and that baseline BMI did not affect the efficacy of filgotinib.

3.
Z Rheumatol ; 82(9): 739-753, 2023 Nov.
Article in English | MEDLINE | ID: mdl-36757417

ABSTRACT

OBJECTIVE: To investigate treatment patterns in patients with rheumatoid arthritis (RA) in Germany who had previously received conventional synthetic (cs) or biologic (b) disease-modifying antirheumatic drugs (DMARDs). METHODS: Patients with RA who initiated treatment with a csDMARD, bDMARD, or Janus kinase (JAK) inhibitor between 2017 and 2018 and who had previously received csDMARD or bDMARD therapy were retrospectively selected from the Institute for Applied Health Research Berlin GmbH (InGef). Time on treatment and discontinuation risk were assessed using the Kaplan-Meier method. Cox regression identified variables associated with an increased discontinuation risk. RESULTS: A total of 990 patients had received prior csDMARD therapy; 375 had received prior bDMARD therapy. Tumor necrosis factor (TNF)-α inhibitors and JAK inhibitors were the most commonly prescribed DMARD class in those previously treated with a csDMARD or bDMARD, respectively. In both cohorts, more patients received DMARD monotherapy than combination therapy. In the prior csDMARD cohort, median time on treatment was 276, 252, and 148 days with JAK inhibitors, TNF­α inhibitors, and csDMARDs, respectively, and those treated with JAK or TNF­α inhibitors were less likely to discontinue treatment than those on csDMARDs (log-rank test p-value < 0.01 for both comparisons); no significant differences were found within the prior bDMARD cohort. CONCLUSION: This is among the first detailed analyses of RA treatment patterns in a real-world setting in Germany since the introduction of JAK inhibitors. TNF­α inhibitors were the most commonly prescribed DMARD after failure of an initial csDMARD, while JAK inhibitors were the most common among patients previously treated with a bDMARD. In both groups, monotherapy with bDMARD or targeted synthetic DMARD was common. In the prior csDMARD cohort, treatment duration was significantly longer with JAK or TNF­α inhibitors than with csDMARDs.


Subject(s)
Antirheumatic Agents , Arthritis, Rheumatoid , Biological Products , Janus Kinase Inhibitors , Humans , Retrospective Studies , Janus Kinase Inhibitors/therapeutic use , Tumor Necrosis Factor-alpha , Antirheumatic Agents/therapeutic use , Arthritis, Rheumatoid/drug therapy , Arthritis, Rheumatoid/epidemiology , Germany/epidemiology , Insurance, Health , Data Analysis , Biological Products/therapeutic use
4.
Digestion ; 102(2): 216-226, 2021.
Article in English | MEDLINE | ID: mdl-31639807

ABSTRACT

OBJECTIVES: This study aimed to assess the real-world rates of treatment discontinuation and switching of biologic therapies in patients with inflammatory bowel disease (IBD). METHODS: A retrospective claims data analysis on all continuously insured adult IBD patients with initiation of a biologic therapy was conducted. Observation started with the date of the first prescription of index tumor necrosis factor α-inhibitors (anti-TNFα) or vedolizumab (VDZ) therapy and lasted 12 months. Non-persistence was assumed in case of a switch to another biologic or a treatment gap of >90 days. RESULTS: We included 1,248 IBD biologic treatment starters (502 adalimumab, 77 golimumab, 441 infliximab, 228 VDZ); 837/411 were biologic-naïve (bio-naïve)/ biologic-experienced (bio-experienced). Mean age of bio-naïve/bio-experienced anti-TNFα patients was 39.2/38.1 years (54.9%/56.7% female) and 42.6/37.8 years for VDZ patients (56.3%/54.9% female). Seven hundred and seventy-two patients (61.9%) were persistent with their index biologic therapy after 12 months (61.9%/61.8% bio-naïve/bio-experienced). Percentage of persistent patients was 69.7% for VDZ (65.6%/71.3%) and 60.1% for anti-TNFα (61.4%/55.5%). VDZ was associated with later non-persistence in a multivariable Cox regression analysis (hazard ratio 0.675; p = 0.003) compared to anti-TNFα. CONCLUSIONS: Only 60-70% of IBD -patients are still persistent with their biologic therapy after 12 months. VDZ therapy is associated with a higher persistence than anti-TNFα therapy in this analysis.


Subject(s)
Biological Products , Inflammatory Bowel Diseases , Adult , Antibodies, Monoclonal, Humanized/therapeutic use , Biological Products/therapeutic use , Data Analysis , Female , Humans , Inflammatory Bowel Diseases/drug therapy , Male , Retrospective Studies , Tumor Necrosis Factor Inhibitors , Tumor Necrosis Factor-alpha
7.
Z Gastroenterol ; 57(7): 843-851, 2019 Jul.
Article in English | MEDLINE | ID: mdl-31288280

ABSTRACT

OBJECTIVES: This study aimed to describe biologic treatment of German inflammatory bowel disease (IBD) patients, including biologics' dosage, health care resource use, and treatment-associated cost. METHODS: In this retrospective claims data analysis, all continuously insured adult IBD patients (Crohn's disease [CD] or ulcerative colitis [UC]) who started a new therapy with an anti-tumor necrosis factor alpha (anti-TNF-α) or vedolizumab (VDZ) were included. Observation started with the date of the first prescription of index biologic therapy and lasted 12 months. RESULTS: In the database, 1248 out of 57 296 IBD patients started a biologic treatment of interest (1020 anti-TNF-α, 228 VDZ), and 837 patients were bio-naïve (773 anti-TNF-α, 64 VDZ). The mean age of bio-naïve/bio-experienced anti-TNF-α patients was 39.2/38.1 years (54.9 %/56.7 % female) and 42.6/37.8 years for VDZ patients (56.3 %/54.9 % female). The proportion of patients receiving a maintenance dosage > 150 % compared to SmPC was 15.1 % for Adalimumab, 5.2-39.0 % for Golimumab, 14.7-34.5 % for Infliximab, and 19.7 % for VDZ patients. During the maintenance phase, up to 58.8 % of patients received at least 1 prescription of any CS, and 41.7 %/47.1 % (anti-TNF-α/VDZ) were treated in a hospital due to IBD. The mean IBD-related direct health care cost per patient year was €â€Š30 246 (anti-TNF-α)/ €â€Š28 227 (VDZ) for bio-naïve patients (p = 0.288) and €â€Š34 136 (anti-TNF-α)/ €â€Š32 112 (VDZ) for bio-experienced patients (p = 0.011). CONCLUSIONS: A substantial percentage of patients receive a high biologic dosage in the maintenance phase. Despite biologic therapy, 30-40 % receive a CS therapy and/or experience at least 1 IBD-associated hospitalization within a year, possibly indicating a remaining disease activity.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Biological Products/therapeutic use , Colitis, Ulcerative/drug therapy , Gastrointestinal Agents/therapeutic use , Inflammatory Bowel Diseases/drug therapy , Inflammatory Bowel Diseases/economics , Tumor Necrosis Factor-alpha/antagonists & inhibitors , Adult , Colitis, Ulcerative/economics , Female , Humans , Infliximab , Male , Middle Aged , Retrospective Studies
11.
Eur J Clin Pharmacol ; 70(4): 453-9, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24366502

ABSTRACT

PURPOSE: The hepatotoxic potential of the analgesic flupirtine has attracted increased attention over the past years. Recently, risk minimisation measures such as maximum treatment duration of 2 weeks have been requested by the European Medicines Agency (EMA). This study was conducted to further elucidate the clinical pattern of flupirtine-induced liver injury (FILI). METHODS: Seven FILI patients were ascertained in all Berlin hospitals in the Berlin Case-control Surveillance Study (FAKOS) between 2002 and 2011. Furthermore, we reviewed the severe cases of flupirtine-associated hepatotoxicity included in the adverse drug reaction database of the Federal Institute for Drugs and Medical Devices (BfArM) in Germany from between 1991 and 2012. RESULTS: All seven FILI patients of FAKOS were hospitalised. Six of them were female, mean age was 58 [corrected] years, and the most common symptoms were fatigue and jaundice. Three patients developed acute liver failure (ALF). Discontinuation of flupirtine invariably led to clinical and laboratory improvement. Review of the BfArM cases (n = 248) showed female sex predominance and high prevalence of jaundice and ALF. Time to onset of symptoms was less than 2 weeks in 9 % of the patients with respective data. CONCLUSIONS: Our results corroborate previous findings on FILI's clinical pattern and on its potentially severe course. Although the hepatotoxic risk might be higher after the first 2 weeks of treatment, earlier onset of severe FILI cannot be ruled out. Postauthorisation safety studies are needed to evaluate EMA's risk minimisation measures and to quantify flupirtine's risk according to its duration of use.


Subject(s)
Aminopyridines/adverse effects , Analgesics/adverse effects , Chemical and Drug Induced Liver Injury/etiology , Adult , Adverse Drug Reaction Reporting Systems , Aged , Berlin , Case-Control Studies , Female , Germany , Humans , Male , Middle Aged
12.
Obesity (Silver Spring) ; 21(1): 58-64, 2013 Jan.
Article in English | MEDLINE | ID: mdl-23505169

ABSTRACT

OBJECTIVE: A proprietary natural fiber complex (Litramine IQP G-002AS) derived from Opuntia ficus-indica, and standardized on lipophilic activity, was previously shown in preclinical and human studies to reduce dietary fat absorption through gastrointestinal (GI) fat binding. Here, we investigated the efficacy and safety of IQP G-002AS in body weight reduction. DESIGN AND METHODS: One hundred twenty-five overweight and obese adults participated in the study. Subjects were advised on physical activity, and received nutritional counseling, including hypocaloric diet plans (30% energy from fat and 500 kcal deficit/day). After a 2-week placebo run-in phase, subjects were randomized to receive either 3 g/day of IQP G-002AS (IQ) or a placebo. The primary endpoint was change in body weight from baseline; secondary endpoints included additional obesity measures and safety parameters. RESULTS: One hundred twenty-three subjects completed the 12-week treatment phase (intention-to-treat (ITT) population: 30 male and 93 female; mean BMI: 29.6 ± 2.8 kg/m(2) and age: 45.4 ± 11.3 years). The mean body weight change from baseline was 3.8 ± 1.8 kg in IQ vs. 1.4 ± 2.6 kg in placebo (P < 0.001). More IQ subjects lost at least 5% of their initial body weight compared to placebo (P = 0.027). Compared with placebo, IQ also showed significantly greater reduction in BMI, body fat composition, and waist circumference. IQ was well tolerated with no adverse reactions reported. CONCLUSIONS: These results suggest that the natural fiber complex Litramine IQP G-002AS is effective in promoting weight loss.


Subject(s)
Adipose Tissue/drug effects , Body Mass Index , Dietary Fiber/therapeutic use , Obesity/diet therapy , Opuntia/chemistry , Waist Circumference/drug effects , Weight Loss/drug effects , Adult , Anti-Obesity Agents/pharmacology , Anti-Obesity Agents/therapeutic use , Body Composition/drug effects , Dietary Fiber/pharmacology , Double-Blind Method , Female , Humans , Intention to Treat Analysis , Male , Middle Aged , Overweight/diet therapy , Phytotherapy , Plant Preparations/pharmacology , Plant Preparations/therapeutic use
13.
J Dtsch Dermatol Ges ; 10 Suppl 2: S1-95, 2012 Mar.
Article in English | MEDLINE | ID: mdl-22386073

ABSTRACT

Psoriasis vulgaris is a common and often chronic inflammatory skin disease. The incidence of psoriasis in Western industrialized countries ranges from 1.5% to 2%. Patients afflicted with severe psoriasis vulgaris may experience a significant reduction in quality of life. Despite the large variety of treatment options available, surveys have shown that patients still do not received optimal treatments. To optimize the treatment of psoriasis in Germany, the Deutsche Dermatologi sche Gesellschaft (DDG) and the Berufsverband Deutscher Dermatologen (BVDD) have initiated a project to develop evidence-based guidelines for the management of psoriasis. They were first published in 2006 and updated in 2011. The Guidelines focus on induction therapy in cases of mild, moderate and severe plaque-type psoriasis in adults including systemic therapy, UV therapy and topical therapies. The therapeutic recommendations were developed based on the results of a systematic literature search and were finalized during a consensus meeting using structured consensus methods (nominal group process).


Subject(s)
Dermatologic Agents/administration & dosage , Dermatology/standards , Practice Guidelines as Topic , Psoriasis/diagnosis , Psoriasis/therapy , Quality of Health Care , Ultraviolet Therapy/standards , Administration, Topical , Adult , Humans
15.
J Biol Chem ; 286(33): 29192-29206, 2011 Aug 19.
Article in English | MEDLINE | ID: mdl-21586567

ABSTRACT

The α-secretases A disintegrin and metalloprotease 10 (ADAM10) and ADAM17 trigger constitutive and regulated processing of the cellular prion protein (PrP(c)) yielding N1 fragment. The latter depends on protein kinase C (PKC)-coupled M1/M3 muscarinic receptor activation and subsequent phosphorylation of ADAM17 on its intracytoplasmic threonine 735. Here we show that regulated PrP(c) processing and ADAM17 phosphorylation and activation are controlled by the extracellular-regulated kinase-1/MAP-ERK kinase (ERK1/MEK) cascade. Thus, reductions of ERK1 or MEK activities by dominant-negative analogs, pharmacological inhibition, or genetic ablation all impair N1 secretion, whereas constitutively active proteins increase N1 recovery in the conditioned medium. Interestingly, we also observed an ERK1-mediated enhanced expression of PrP(c). We demonstrate that the ERK1-associated increase in PrP(c) promoter transactivation and mRNA levels involve transcription factor AP-1 as a downstream effector. Altogether, our data identify ERK1 as an important regulator of PrP(c) cellular homeostasis and indicate that this kinase exerts a dual control of PrP(c) levels through transcriptional and post-transcriptional mechanisms.


Subject(s)
Amyloid Precursor Protein Secretases/metabolism , Mitogen-Activated Protein Kinase 3/metabolism , PrPC Proteins/metabolism , Promoter Regions, Genetic/physiology , Transcriptional Activation/physiology , ADAM Proteins/genetics , ADAM Proteins/metabolism , ADAM10 Protein , ADAM17 Protein , Amyloid Precursor Protein Secretases/genetics , Animals , HEK293 Cells , Humans , Membrane Proteins/genetics , Membrane Proteins/metabolism , Mice , Mice, Knockout , Mitogen-Activated Protein Kinase 3/genetics , Phosphorylation/physiology , PrPC Proteins/genetics , RNA, Messenger/biosynthesis , RNA, Messenger/genetics , Receptor, Muscarinic M1/genetics , Receptor, Muscarinic M1/metabolism , Receptor, Muscarinic M3/genetics , Receptor, Muscarinic M3/metabolism , Transcription Factor AP-1/genetics , Transcription Factor AP-1/metabolism
16.
Life Sci ; 85(11-12): 431-7, 2009 Sep 09.
Article in English | MEDLINE | ID: mdl-19635487

ABSTRACT

AIMS: In patients with renal disease the cardiovascular risk is greatly increased, and endothelial dysfunction is assumed to play a pivotal role in this process. Therefore we compared treatment effects of a beta-blocker with additional vasodilatory capacities (nebivolol) and a beta-blocker lacking these actions (metoprolol) on intrarenal and coronary vascular function in a rat model of renal failure with hypertension. MAIN METHODS: Renal failure was induced by 5/6-nephrectomy (Nx) and analyzed after 4 weeks in Wistar rats. Untreated Nx, Nx/nebivolol 6 mg/d (Nx-Nebi); Nx/metoprolol 60 mg/d (Nx-Meto) and sham-operated (Sham) animals were studied. Isolated small renal and coronary arteries were investigated for endothelium-dependent relaxation to acetylcholine (ACh) and for the contribution of the endothelial mediators NO and endothelium-derived hyperpolarizing factor (EDHF). KEY FINDINGS: Systolic blood pressure (SBP) was significantly increased in Nx, Nx-Nebi, and Nx-Meto (168+/-5, 153+/-3, and 162+/-6 mmHg) compared to Sham (138+/-3 mmHg, p<0.05, respectively). The increase in albuminuria of Nx (120-fold vs. Sham, p<0.0001) was almost (-85%) normalized by nebivolol compared to Sham (p<0.05), whereas metoprolol induced no significant effect. Renal arteries showed significantly increased Ach-relaxation in Nx and Nx-Nebi (Emax 86+/-4% and 76+/-7%, p<0.05) due to an increase in EDHF-mediated dilation (Emax_EDHF 78+/-7% and 73+/-6%) compared to Sham (Emax 54+/-4% and Emax_EDHF 44+/-6%) and Nx-Meto (Emax 42+/-12% and Emax_EDHF 18+/-5%). ACh-relaxation in coronary arteries was similar between groups but the contribution of NO (relative to EDHF) was strongly increased by nebivolol. SIGNIFICANCE: The present findings offer an explanation of the nephroprotective effect of intrarenal endothelial function in renal failure.


Subject(s)
Acute Kidney Injury/physiopathology , Adrenergic beta-Antagonists/pharmacology , Kidney/physiopathology , Vasodilation/drug effects , Acetylcholine/pharmacology , Albuminuria/metabolism , Animals , Benzopyrans/pharmacology , Biological Factors/physiology , Creatinine/metabolism , Endothelium, Vascular/drug effects , Endothelium, Vascular/physiology , Ethanolamines/pharmacology , In Vitro Techniques , Male , Microcirculation/drug effects , Nebivolol , Nephrectomy , Nitric Oxide/physiology , Nitroprusside/pharmacology , Rats , Rats, Wistar , Signal Transduction/drug effects , Vasodilator Agents/pharmacology
17.
Eur J Pharmacol ; 617(1-3): 90-6, 2009 Sep 01.
Article in English | MEDLINE | ID: mdl-19576207

ABSTRACT

Arterial injury has been reported to activate the mitogen-activated ERK kinase (MEK)/extracellular signal-regulated kinase (ERK) signaling pathway. Pharmacological MEK inhibition was previously shown to inhibit injury-induced neointima formation in rodent models, but inhibitor compounds were administered either locally at a high dose or systemic treatment was performed over an extended period of time. Aim of this study was, therefore, to explore the efficiency of single low-dose administration of the MEK inhibitor PD98059 on neointima formation in the injured rat carotid artery. The second aim of the study was to analyse treatment effects on MEK-dependent signaling and protein expression. PD98059 (at doses of 10 and 40 nmol) was administered to the adventitia immediately after injury using Pluronic gel as drug carrier. Compared to untreated controls, PD98059 treatment (10 nmol) resulted in significant reductions of neointima-to-media ratio (by 66%) and injury-induced lumen loss (by 53%). Conversely, lumen was increased by 33% in PD98059-treated arteries. There were no significant differences between the 10 and 40 nmol treatment groups. Dual ERK1/2 phosphorylation, and also ERK1/2 protein expression, was significantly inhibited by PD98059 treatment. Expression of the transcription factor Ets-1, a nuclear target protein of ERK1/2 was significantly suppressed in PD98059-treated arteries. Attenuation of neointima formation was associated with significantly decreased expression of the proliferation marker PCNA. In contrast, we did not find biochemical evidence of increased apoptosis in PD98059-treated arteries. Our data show that the single adventitial administration of low-dose MEK inhibitor PD98059 is sufficient to suppress neointima formation in injured arteries.


Subject(s)
Carotid Arteries/pathology , Cell Nucleus/metabolism , Connective Tissue , Extracellular Signal-Regulated MAP Kinases/antagonists & inhibitors , MAP Kinase Signaling System/drug effects , Protein Kinase Inhibitors/pharmacology , Tunica Intima/pathology , Animals , Apoptosis/drug effects , Biomarkers/metabolism , Carotid Arteries/drug effects , Cell Nucleus/drug effects , Cell Proliferation/drug effects , Dose-Response Relationship, Drug , Extracellular Signal-Regulated MAP Kinases/metabolism , Flavonoids/administration & dosage , Flavonoids/pharmacology , Gene Expression Regulation, Enzymologic/drug effects , Male , Phosphorylation/drug effects , Protein Kinase Inhibitors/administration & dosage , Proto-Oncogene Protein c-ets-1/metabolism , Rats , Rats, Sprague-Dawley , Tunica Intima/drug effects
18.
J Neurosci ; 29(20): 6752-60, 2009 May 20.
Article in English | MEDLINE | ID: mdl-19458243

ABSTRACT

The presenilin-dependent gamma-secretase processing of the beta-amyloid precursor protein (betaAPP) conditions the length of the amyloid beta peptides (Abeta) that accumulate in the senile plaques of Alzheimer's disease-affected brains. This, together with an additional presenilin-mediated epsilon-secretase cleavage, generates intracellular betaAPP-derived fragments named amyloid intracellular domains (AICDs) that regulate the transcription of several genes. We establish that presenilins control the transcription of cellular prion protein (PrP(c)) by a gamma-secretase inhibitor-sensitive and AICD-mediated process. We demonstrate that AICD-dependent control of PrP(c) involves the tumor suppressor p53. Thus, p53-deficiency abolishes the AICD-mediated control of PrP(c) transcription. Furthermore, we show that p53 directly binds to the PrP(c) promoter and increases its transactivation. Overall, our study unravels a transcriptional regulation of PrP(c) by the oncogene p53 that is directly driven by presenilin-dependent formation of AICD. Furthermore, it adds support to previous reports linking secretase activities involved in betaAPP metabolism to the physiology of PrP(c).


Subject(s)
Fibroblasts/metabolism , Presenilins/metabolism , Prions/metabolism , Tumor Suppressor Protein p53/metabolism , Amyloid Precursor Protein Secretases/genetics , Amyloid Precursor Protein Secretases/metabolism , Amyloid beta-Protein Precursor/deficiency , Amyloid beta-Protein Precursor/genetics , Animals , Brain/metabolism , Cells, Cultured , Chromatin Immunoprecipitation/methods , Cyclin-Dependent Kinase Inhibitor p19/deficiency , Cyclin-Dependent Kinase Inhibitor p19/genetics , Dipeptides/pharmacology , Embryo, Mammalian , Enzyme Inhibitors/pharmacology , Fibroblasts/drug effects , Gene Expression Regulation/drug effects , Gene Expression Regulation/genetics , Humans , Mice , Mice, Knockout , Mutagenesis, Site-Directed/methods , Presenilins/deficiency , Protein Structure, Tertiary/genetics , RNA, Messenger/metabolism , Transfection/methods , Tumor Suppressor Protein p53/deficiency
19.
J Dtsch Dermatol Ges ; 5 Suppl 3: 1-119, 2007 Jul.
Article in English | MEDLINE | ID: mdl-17615051

ABSTRACT

Psoriasis vulgaris is a common and often chronic inflammatory skin disease. The incidence of psoriasis in Western industrialized countries ranges from 1 to 2%. Patients afflicted with severe psoriasis vulgaris may experience a significant reduction in quality of life. Despite the large variety of treatment options available, patient surveys have revealed lack of satisfaction with the efficacy of available treatments and a high rate of non-compliance. To optimize the treatment of psoriasis in Germany, the Deutsche Dermatologische Gesellschaft (DDG) and the Berufsverband Deutscher Dermatologen (BVDD) initiated a project to develop evidence-based guidelines for the management of psoriasis. These resulting Guidelines focus on induction therapy in cases of mild, moderate, and severe plaquetype psoriasis in adults. The Guidelines include evidence-based evaluation of the efficacy of all currently available therapeutic options in Germany. In addition, they offer detailed information on how best to administer the various treatments and give information on contraindications, adverse drug reactions, and drug interactions as well as estimates of practicability and cost. The Guidelines were developed following the recommendations of the Arbeitsgemeinschaft wissenschaftlicher medizinischer Fachgesellschaften (AWMF). The therapeutic recommendations were developed by an expert group and finalized during interdisciplinary consensus conferences.


Subject(s)
Dermatologic Agents/standards , Dermatologic Agents/therapeutic use , Dermatology/standards , Guideline Adherence , Practice Guidelines as Topic , Practice Patterns, Physicians'/standards , Psoriasis/drug therapy , Germany , Humans
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