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C3bi-binding protein on Candida albicans: temperature-dependent expression and relationship to human complement receptor type 3. 总被引:9,自引:16,他引:9
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A Eigentler T F Schulz C Larcher E M Breitwieser B L Myones A L Petzer M P Dierich 《Infection and immunity》1989,57(2):616-622
We investigated in detail the previously described capacity of pseudohyphae of Candida albicans to bind C3-coated particles. We show that the expression of the C3bi receptor of C. albicans was dependent upon the growth temperature of the fungi. C. albicans grown at 30 degrees C bound strongly to EAC1423bi, whereas those cells grown at 38.5 degrees C were completely devoid of this capacity. The molecule responsible for the attachment of EAC1423bi was heat labile and trypsin sensitive. Several, but not all, monoclonal antibodies to the alpha-chain of human complement receptor type 3 (CR3) stained C. albicans, and this reactivity was expressed in parallel with the capacity of C. albicans to bind EAC1423bi, i.e., both were dependent on the growth temperature of the fungi and were trypsin sensitive. In contrast to CR3, the binding of EAC1423bi to C. albicans did not require the presence of divalent cations. Rabbit immunoglobulin G antibodies directed against C. albicans inhibited the binding of EAC1423bi to C. albicans but not to human CR3. These inhibiting IgG antibodies recognized antigens expressed on the surface of pseudohyphae but not those of yeast cells. OKM-1, a monoclonal antibody to human CR3 inhibited the attachment of EAC1423bi to CR3 and also to C. albicans. OKM-1 precipitated a 130-kilodalton band from solubilized 125I-labeled C. albicans. We conclude that the complement receptors on C. albicans and human CR3 were antigenically related but not identical and that they differed in their functional characteristics. 相似文献
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Indelicato Elisabetta Fanciulli Alessandra Nachbauer Wolfgang Eigentler Andreas Amprosi Matthias Ndayisaba Jean-Pierre Granata Roberta Wenning Gregor Boesch Sylvia 《Journal of neurology》2020,267(4):1097-1102
Journal of Neurology - Cerebellar ataxias are a heterogeneous group of disorders of both genetic and non-genetic origin. In sporadic cases, two entities are recognized: multiple system atrophy of... 相似文献
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Radny P Caroli UM Bauer J Paul T Schlegel C Eigentler TK Weide B Schwarz M Garbe C 《British journal of cancer》2003,89(9):1620-1626
The objective of the present study was to validate the use of intralesional injection of interleukin-2 (IL-2) in patients with skin and soft-tissue melanoma metastases. A total of 24 patients with AJCC stage III or IV melanoma and single or multiple skin and soft-tissue metastases were included. Interleukin-2 injections were administered intralesionally into the total number of cutaneous and soft-tissue metastases accessible from the skin, 2-3 times weekly, over 1-57 weeks. Single doses varied from 0.6 to 6 x 10(6) IU, depending on lesion size. The clinical response was monitored by sonography and confirmed by histopathology; response evaluation was confined to the intralesionally treated tumours. Complete response (CR) of the treated metastases was achieved in 15 patients (62.5%), the longest remission lasting 38 months to date. In five patients, partial response (PR) was achieved (21%) and in another three patients, progressive disease was observed (one patient not assessable). A total of 245 metastases were treated with CR in 209 (85%), and PR in 21 (6%). The therapy was generally well tolerated; the observed adverse events were mainly of grade 1-2 severity. Immunohistochemical studies showed the tumour cells undergoing apoptosis and revealed a mixed character of the inflammatory infiltrate. The unusual high CR rate in metastatic melanoma of 62.5% and the limited toxicity suggest that treatment of skin and soft-tissue melanoma metastases with intralesional injection of IL-2 may be a safe and effective alternative to conventional therapies. The optimal dosage and duration of this therapy still remain to be defined in larger prospective multicentre trials. 相似文献
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Mervic L Leiter U Meier F Eigentler T Forschner A Metzler G Bartenjev I Büttner P Garbe C 《Melanoma research》2011,21(3):244-252
This study identified sex differences in clinical presentation and survival for primary cutaneous melanoma without clinical evidence of metastasis at diagnosis from 1976 to 2008 in southern Germany. Melanoma-specific survival curves and estimated survival probabilities were generated using the Kaplan-Meier method. Multivariate survival analyses were carried out using the Cox modeling. Male patients had significantly thicker and more frequently ulcerated tumors and a lower 10-year disease-specific survival (DSS) and recurrence-free survival probability compared with females among patients of 43 years old or younger (DSS: 86.1 vs. 93.2%, P<0.001) and 44-60 years old (DSS: 83.5 vs. 90.1%, P<0.001). The survival advantage of female patients in terms of 10-year DSS and 10-year recurrence-free survival was not observed after an age of 60 years (P=0.21 and 0.51, respectively). Sex was of prognostic importance for DSS and survival after recurrence [hazards ratio (HR): 1.3; 95% confidence interval (CI): 1.1-1.6; P=0.002 and HR: 1.2; 95% CI: 1.0-1.5; P=0.018, respectively]. Stratified by age groups, sex remained of prognostic importance for DSS only in patients of 43 years or younger, and 44-60 years old (HR: 1.5; 95% CI: 1.0-2.1; P=0.03 and HR: 1.4; 95% CI: 1.1-2.0; P=0.02, respectively). Sex is an independent prognostic factor in surviving melanoma. The sex difference in survival with a better outcome for women is confined to melanoma patients of 60 years and younger. In addition, in younger age groups, male patients present with prognostically unfavorable features of primary melanoma. A female survival advantage is also known for other solid tumors such as colon and lung cancer; however, age dependency has not been studied. 相似文献
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A. Pflugfelder A.‐K. Welter U. Leiter B. Weide L. Held T.K. Eigentler T. Dirschka E. Stockfleth D. Nashan C. Garbe 《Journal of the European Academy of Dermatology and Venereology》2012,26(1):48-53
Background Actinic keratoses (AK) are carcinomata in situ with the potential to develop into invasive carcinoma. Several studies have demonstrated that 3% diclofenac in 2.5% hyaluronic acid gel (HA) is effective and well tolerated in the treatment of AK. To date there are no large randomized multicentre trials with treatment durations longer than 90 days and histopathological control of treatment outcome. Objective The aim of this study was to investigate whether a prolonged treatment with diclofenac in HA of 6 vs. 3 months adds to the efficacy in treatment for AK and if this will influence tolerability and quality of life (QoL). Methods This was a multicentre, randomized open‐label study in which 418 patients with mild to moderate AKs were randomized into two treatment groups. Group A received diclofenac in HA for 3 months and group B for 6 months. Treatment efficacy was assessed by size measurement and a final biopsy of a defined marker AK. Quality of life was measured using the Dermatology Life Quality Index questionnaire. Results Clinical complete clearance was observed in 40% in group A and in 45% in group B (P = 0.38). Histopathological clearance was confirmed in 30% in group A and in 40% in group B (P = 0.16). Treatment was well tolerated and QoL was significantly improved after treatment in both treatment groups. Conclusion Treatment with diclofenac in HA is effective and well tolerated during a treatment period of 3 months as well as 6 months. Prolongation of the treatment duration did not significantly affect treatment outcome. 相似文献