I Koti

Charité Universitätsmedizin Berlin, Berlín, Berlin, Germany

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Publications (10)21.53 Total impact

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    ABSTRACT: Background: The impact of chronic spontaneous urticaria (CSU) on health-related quality of life (HRQoL) is widely held to be mainly influenced by disease activity and comorbidities. Objective: To assess the correlation between disease activity and HRQoL impairment by using validated disease-specific instruments. Methods: The Chronic Urticaria Quality of Life Questionnaire (CU-Q2oL) was translated into Greek and subsequently applied to 110 CSU patients along with the Dermatology Life Quality Index and the Urticaria Activity Score. After the validity and reliability of the Greek CU-Q2oL had been determined, we assessed the relation between disease activity and HRQoL impairment by computing correlations as well as by performing multiple regression analysis. Results: Exploratory factor analysis revealed a six-scale structure of the Greek CU-Q2oL that explained 67.9% of its total variance. The internal consistency was satisfactory with Cronbach's α >0.7. Disease activity was the only predictor of quality of life impairment, but it only moderately correlated with the CU-Q2oL total score (r = 0.40, p < 0.0001). Conclusion: Our results suggest that there are additional factors to disease activity that are responsible for the pronounced reduction of HRQoL in CSU, and this supports the recommendation to assess and monitor both disease activity and quality of life in CSU patients. © 2013 S. Karger AG, Basel.
    Full-text · Article · Aug 2013 · Dermatology
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    K Weller · I Koti · M Makris · M Maurer
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    ABSTRACT: Chronic spontaneous urticaria (CSU) is a common and disabling skin disease which is often associated with psychiatric comorbidities such as anxiety and depression. These conditions are widely thought to cause, drive and/or maintain CSU, and have been reported as making an important contribution to the low quality of life in patients with CSU. Almost half of all patients with CSU have autoreactive CSU which can be readily diagnosed by the autologous serum skin test. The prevalence and effects of psychiatric comorbidities in this important subgroup are largely unknown. We carried out a study on two groups of patients with CSU, and found that the anxiety and depression scores were lower in patients with autoreactive CSU than in those with nonautoreactive CSU, the first such finding, to our knowledge. In addition, we found that patients with autoreactive CSU were less likely to have Hospital Anxiety and Depression Scale scores indicative for anxiety or depression compared with patients with nonautoreactive CSU. Our results support the view that autoreactive CSU represents a distinct CSU subgroup with a different disease pattern and a lower rate of psychiatric comorbidities.
    Full-text · Article · Jul 2013 · Clinical and Experimental Dermatology
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    ABSTRACT: Background: Nail disorders have considerable psychological impact and may limit activity by impairing functionality of both fingers and toes Objective: To evaluate the impact of nails disorders on quality of life (QoL). Methods: 1063 patients with nail disorders completed an anonymous nail-specific QoL questionnaire consisting of 24 and 16 questions, respectively, for fingernails and toenails with five possible responses to each question. A score of 1-5 was given to each response and the final score was adjusted on a percentile scale. The subjects were classified in groups according to nail disorders. Statistical analysis was carried out using T-test to compare the means between two groups and ANOVA analysis of variance to compare the impact of quality of life on the different types of nail disorders. Results: Comparison between groups showed a statistically significant higher impact for trauma, onychomycosis, other infections, structure abnormalities, psoriasis, other inflammatory diseases and paronychia and a lower impact for chromonychias and tumours. QoL was statistically significantly more affected in patients having multiple nails involved, women, and in people aged 60-79 years. There was no statistically significant difference on the QoL impact between patients having only fingernails or only toenails involved. Conclusion: Even though published literature tends to focus on the impact of nail psoriasis and onychomycosis on QoL, other nail disorders cause similar frustration to patients. A possible explanation for this is that appearance of the nail has a more significant impact on QoL than the severity of the disorder.
    No preview · Article · Jun 2013
  • K. Weller · I. Koti · M. Maurer

    No preview · Conference Paper · Mar 2012
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    ABSTRACT: Allergic rhinitis and asthma share common epidemiological features and inflammatory processes. The aim of the present study was to document the influence of natural allergen exposure in exhaled NO (eNO) and in spirometric parameters of patients with seasonal allergic rhinitis(SAR) and to investigate the differences among subjects with positive versus negative bronchial provocation to metacholine(BPMch).Twenty-six non-smoking patients (13F/13M; mean age 28.4ys) with a documented history of SAR, 15 healthy, non-atopic(6F/9M; mean age 37.1ys) and 6 non-symptomatic atopic subjects (3F/3M; mean age 36.5ys) were studied. At the first visit during pollen season each subject filled symptom-score card, underwent eNO and nasal NO (nNO) measurements and spirometry. BPMch was performed within the next 10 days. At the second visit out of pollen season, all measurements but BPMch were repeated. Control subjects underwent eNO and nNO measurements.eNO was significantly increased during pollen season in BPMch positive vs BPMch negative(46.22±32.60 vs 17.81±12.67, p=0.014) and vs non-atopic controls(11.40±5.84, p<0.001) as well as atopic controls(13.56±5.34, p=0.001). No difference was detected out of pollen season in both patients' groups. nNO values were increased only in BPMch(+) group compared to both control groups in pollen season (vs non-atopics p=0.002, vs atopics p=0.002) and only vs non-atopics out of season, p=0.004. Regression analysis has shown that the difference in FEF25-75 values (off season-in season) is a predictor of positive BPMch .eNO is markedly increased in BPMch patients with allergic rhinitis while mid-expiratory flow may represent an early marker of lower airway involvement in respiratory allergy.
    Full-text · Article · Dec 2011 · Iranian journal of allergy, asthma, and immunology
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    ABSTRACT: Urticaria is often underdiagnosed and/or undertreated. We have conducted an Internet-based study to record epidemiological and clinical features as well as therapeutic interventions for urticaria in a large sample of patients in Greece. A standard anonymous questionnaire was posted for a 3-month period on 'http://www.in.gr', a Greek popular Internet portal. Each individual participated only once. Participants were screened for the presence or history of urticaria by two key questions and were then asked to provide information on symptomatology and management. A total of 12 396 subjects voluntarily responded to the survey, of which 8440 (5136 females) who reported to have or had urticaria, were finally analysed. A total of 4780 (56.6%) had experienced weals only, 507 (6.0%) angio-oedema only and 3018 (35.8%) both. Weals and angio-oedema were found to be more common in women; 2761(57.8%) and 277(54.6%), respectively. Age of onset significantly correlated with disease duration; a 1% higher possibility of longer duration of urticaria exists (more than 6 weeks compared with less than 6 weeks) for each additional year of age of onset after controlling for gender. Patients with chronic urticaria had increased mean age compared with those reporting the acute form (35.04 vs. 33.88 years, P < 0.001). Dermatologists were the most frequently visited specialists and the most common treatments were antihistamines and topical preparations. The self-reported eliciting factors of urticaria were as follows: physical stimuli (approximately 25%), psychological distress (17.2%), direct contact to metals or chemicals (14.5%), foods and drugs (10%), whereas a third of the participants could not identify any trigger.   Internet surveys can be a useful tool for screening the general population for common allergic disorders, such as urticaria.
    Full-text · Article · May 2011 · Journal of the European Academy of Dermatology and Venereology
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    ABSTRACT: Allergic rhinitis is a global health problem which causes major illness and represents a risk factor for asthma. The primary aim of the study was to record the clinical pattern of allergic rhinitis and its temporal relation with asthma in a Greek population. Three-hundred and sixteen subjects with documented diagnosis of allergic rhinitis in a two-year period were included in this study. All participants completed a standardised questionnaire with full retrospective epidemiological data for rhinitis; in addition, serum IgE measurement and skin prick tests with 22 common inhalant allergens were carried out, while spirometry was performed in subjects with self-reported or doctor-diagnosed asthma. All subjects with at least one positive skin test were included in study analysis. One-hundred and sixty five out of 316 patients (49.1%) stated self reported-asthma while in 63/316 (19.9%) asthma was documented with spirometry. One hundred out of 165 (60.6%) had rhinitis as first clinical manifestation while in 24/165 (14.5%) asthma symptoms appeared first; the remaining 31/165 (24.9%) reported simultaneous onset of upper and lower airways' symptoms. About 68.5% were sensitised to seasonal allergens exclusively, while 50% were sensitised to ≥ 1 of Parietaria, grasses sp., Olea eur. The duration of rhinitis in the subpopulation of patients with self-reported asthma (n=165) was significantly higher compared with non-asthmatics (mean=3.22 years, p<0.001). Survival analysis for the estimation of asthma onset showed that the mean time interval with rhinitis only is 16.6 years (median 12 years, incidence 0.0596). The unique environmental conditions and the aerobiology of each area clearly affect the clinical features of respiratory allergy.
    No preview · Article · Sep 2010 · Allergologia et Immunopathologia
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    Preview · Article · Nov 2009 · Allergy
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    ABSTRACT: Venom immunotherapy (VIT) is the only effective treatment for hymenoptera hypersensitivity, but conventional protocols require a few weeks. We present the safety of a 3-day "rush" protocol that requires only 7 injections and 255 mgr cumulative dose before the 100 microg maintenance dose. Forty-nine patients (33 males, 16 females) of mean age 43.57+/-12.9 yrs received "rush" VIT. Only 7 injections were required until the maintenance dose of 100 mgr was reached on Day 5. On Day 1, four injections were administered with initial dose of 5 mgr and total dose of 75 microg. On Day 3 a cumulative dose of 180 mgr was administered in three injections (40 mgr, 60 mgr and 80 mgr). A dose of 100 mgr was administered on Day 5. Twenty-nine individuals were treated with Honey-Bee venom; 18 with Common wasp; 5 with Paper Wasp; while 13 patients received Mixed Vespid preparation. Inclusion criteria were documented IgE-mediated allergy with intradermal sensitivity to < or =0.1 mgr/ml venom concentration and concomitant detection of specific venom IgE > or =0.35 kU/l. All patients reached the maintenance dose. Forty-nine patients received 65 immunotherapy courses, resulting in 1520 injections. Thirty-three systemic reactions: 7 during building phase (1.5%); and 26 in the maintenance dose (2.4%) were observed in 9 patients. The percentage of reactions/total injection number was 2.2%; all reactions were mild-to-moderate. Fourteen patients reported documented field stings at least two months after VIT onset with only one reported mild systemic reaction. We propose a simple "rush" VIT protocol in an outpatient setting as an easy-to-perform alternative option for VIT induction phase.
    No preview · Article · Oct 2009 · Allergologia et Immunopathologia
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    ABSTRACT: Hypersensitivity reactions to antineoplastic agents are defined as unexpected reactions with signs and symptoms inconsistent with known toxicity of antineoplastic drugs. These reactions are uncommon and usually associated with certain antineoplastic categories, such as taxanes, platinum-containing compounds, epipodofyllotoxins, asparaginase, procarbazine and, more rarely, with doxorubicin and 6-mercaptopurine. The mechanisms that are responsible for hypersensitivity reactions are unclear and vary between agents. Symptoms of these reactions range from mild skin rashes to more severe reactions, such as arthralgia, respiratory arrest or even death in some cases. Once hypersensitivity reactions are observed, basic principles that allow their management and possible continuance and completion of the regimen should be followed.
    No preview · Article · Feb 2009 · Anti-cancer drugs

Publication Stats

63 Citations
21.53 Total Impact Points


  • 2013
    • Charité Universitätsmedizin Berlin
      • Department of Dermatology, Venerology and Allergology
      Berlín, Berlin, Germany
  • 2009-2013
    • Attikon University Hospital
      Athínai, Attica, Greece
    • Νοσοκομείο Σωτηρία
      Athínai, Attica, Greece