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Felsen, Block- und Geröllhalden waren bislang nicht oder nur im geringen Maße einer Nutzung unterworfen. Sie stellen in unserer mehr oder weniger intensiv genutzten Kulturlandschaft noch einen Teil des ursprünglich dar; es sind Lebensräume, die sich über Tausende von Jahren ungestört entwickeln konnten. Solche Biotope, die uns - wie ein Fenster - den Blick in die Landschaft vor der menschlichen Besiedelung erlauben, nennt man Primärbiotope. Diese Broschüre informiert über die Verbreitung, Biologe, sowie Biozönosen und Schutzmaßnahmen von Felsen und Blockhalden in Baden-Württemberg.
Background: SNPs near the interferon lambda (IFNL) 3 gene are predictors for sustained virological response (SVR) in patients with chronic hepatitis C genotype (GT) 1. In addition, a dinucleotide frame shift in ss469415590 was described, which generates IFNL4. In this study, we compared the role of IFNL4 variants with IFNL3-(rs12979860) and IFNL3-(rs8099917) on response to pegylated (PEG)-IFN and Ribavirin (RBV) in patients with chronic hepatitis C GT2/3.
Methods: We recruited 1006 patients with chronic hepatitis C and GT2/3 in a large German registry. A treatment with PEG-IFN and Ribavirin was started by 959 patients. We performed genotyping of IFNL3 (rs12979860, n = 726; rs8099917, n = 687) and of IFNL4 (ss469415590; n = 631).
Results: Both preferable IFNL3 genotypes were associated with RVR (both p<0.0001) rather than with SVR (rs12979860: p = 0.251; rs8099917: p = 0.447). Only RVR was linked to SVR in univariate and multivariate analyzes (both p<0.001). Concordance of genotyping in patients with available serum samples and EDTA blood samples (n = 259) was more than 96% for both IFNL3 SNPs. IFNL3-(rs12979860) correlated with IFNL4: 99.2% of patients with IFNL3-(rs12979860)-CC were IFNL4-(ss469415590)-TT/TT. IFNL3-(rs12979860)-CT was linked with IFNL4-(ss469415590)-TT/ΔG (98.0%) and IFNL3-(rs12979860)-TT was associated with IFNL4-(ss469415590)-ΔG/ΔG (97.6%).
Conclusion: IFNL3 genotyping from serum was highly efficient and can be used as an alternative if EDTA whole blood is not available. In Caucasian GT2/3 patients genotyping for INFL4-(ss469415590) does not lead to additional information for the decision-making process. Importantly, IFNL3 SNPs were not associated with SVR but with RVR. Even in the era of new direct acting antiviral (DAA) therapies, IFNL3 testing may therefore still be considered for naïve GT2/3 patients to decide if dual Peg-IFN/RBV therapy is an option in resource limited regions.
New and remarkable records of bryophytes from Venezuela, Brazil, Costa Rica and Ecuador are reported. Diphyscium chiapense and Hedwigia ciliata var. leucophaea are new to South America. New to Venezuela are Grimmia reflexidens, Metzgeria claviflora, Pilopogon peruvianus and Racomitrium subsecundum; Grimmia navicularis and G. trichophylla are firstly reported for Brazil; Aphanolejeunea microscopica var. africana, A. minuta, A. sintenisii, Cololejeunea bischleriana, Metalejeunea cucullata, and Hyophila nymaniana represent new records for Costa Rica, and new to Ecuador are Diphyscium longifolium, Erpodium beccarii, Macrocolura sagittistipula, and (for continental Ecuador) Marchantia berteroana. Further new records to the states of that countries and rarely collected species are listed. All specimens are deposited in the private herbaria of the authors, duplicates in different herbaria as indicated.
Breutelia ist eine Gattung, die weltweit mit kanpp 100 Arten vertreten ist, vorwiegend in den tropischen Gebirgen und der südlichen Hemisphäre, wo sie besonders um die Waldgrenze artenreich vertreten ist. In Nordamerika ist die Gattung gar nicht vertreten, in Europa hingegen mit 2 endemischen Arten, Breutelia azorica nur auf den Azoren und B. chrysocoma (Abb. 1) in Westeuropa. Dafür gibt es zwei Hypothesen. Entweder sind diese Arten Tertiärrelikte, die sich über die Eiszeit in den milden ozeanischen Gebieten Westeuropas gehalten haben. Breutelia azorica hätte sich dann von dem damaligen Festland auf die vulkanischen Inseln verbreitet und dort überlebt, B. chrysocoma hätte in küstennahem Gebieten Westeuropas (die heute unter Wasser liegen) die Kaltzeiten überdauert. Oder beide Arten sind mit tropischen Arten identisch und über Sporen vermutlich von den Neotropen auf die Azoren bzw. nach Europa verbreitet worden. In vielen Fällen sind solche Arten wie Campylopus cygneus, C. shawii, Plagiochila heterophylla, P. bifaria, P. longispina u.a. zunächst in Unkenntnis ihres Vorkommens in den Tropen unter eigenem Namen aus Europa beschrieben worden.
Background: Hepatitis delta frequently leads to liver cirrhosis and hepatic decompensation. As treatment options are limited, there is a need for biomarkers to determine disease activity and to predict the risk of disease progression. We hypothesized that anti-HDV IgM could represent such a marker.
Methods: Samples of 120 HDV-infected patients recruited in an international multicenter treatment trial (HIDIT-2) were studied. Anti-HDV IgM testing was performed using ETI-DELTA-IGMK-2-assay (DiaSorin). In addition, fifty cytokines, chemokines and angiogenetic factors were measured using multiplex technology (Bio-Plex System). A second independent cohort of 78 patients was studied for the development of liver-related clinical endpoints (decompensation, HCC, liver transplantation or death; median follow up of 3.0 years, range 0.6–12).
Results: Anti-HDV IgM serum levels were negative in 18 (15%), low (OD<0.5) in 76 (63%), and high in 26 (22%) patients of the HIDIT-2 cohort. Anti-HDV IgM were significantly associated with histological inflammatory (p<0.01) and biochemical disease activity (ALT, AST p<0.01). HDV replication was independent from anti-HDV IgM, however, low HBV-DNA levels were observed in groups with higher anti-HDV IgM levels (p<0.01). While high IP-10 (CXCL10) levels were seen in greater groups of anti-HDV IgM levels, various other antiviral cytokines were negatively associated with anti-HDV IgM. Associations between anti-HDV IgM and ALT, AST, HBV-DNA were confirmed in the independent cohort. Clinical endpoints occurred in 26 anti-HDV IgM positive patients (39%) but in only one anti-HDV IgM negative individual (9%; p = 0.05).
Conclusions: Serum anti-HDV IgM is a robust, easy-to-apply and relatively cheap marker to determine disease activity in hepatitis delta which has prognostic implications. High anti-HDV IgM levels may indicate an activated interferon system but exhausted antiviral immunity.
A list of all liverworts and mosses reported from the Maltese Islands with references has been compiled from the literature, which includes 23 species of liverworts and hornworts as well as 96 taxa of mosses. The list is completed by the results of a bryological fieldtrip in March 2008. During this trip, 14 species of liverworts and 40 species of mosses were collected, of which Cephaloziella baumgartneri, Didymodon luridus, Fissidens gracilifolius, Fossombronia echinata, Funaria pulchella, Riccia cavernosa and Weissia fallax are new to Malta. This raises the number of species known from the Maltese Islands to 23 horn- and liverworts and 100 mosses.
IFN-lambda (IFNλ) is a member of the type III IFN family and is reported to possess anti-pathogen, anti-cancer, and immunomodulatory properties; however, there are limited data regarding its impact on host immune responses in vivo. We performed longitudinal and comprehensive immunosurveillance to assess the ability of pegylated (peg)-IFNλ to augment antiviral host immunity as part of a clinical trial assessing the efficacy of peg-IFNλ in chronic hepatitis B (CHB) patients. These patients were pretreated with directly acting antiviral therapy (entecavir) for 12 weeks with subsequent addition of peg-IFNλ for up to 32 weeks. In a subgroup of patients, the addition of peg-IFNλ provoked high serum levels of antiviral cytokine IL-18. We also observed the enhancement of natural killer cell polyfunctionality and the recovery of a pan-genotypic HBV-specific CD4+ T cells producing IFN-γ with maintenance of HBV-specific CD8+ T cell antiviral and cytotoxic activities. It was only in these patients that we observed strong virological control with reductions in both viral replication and HBV antigen levels. Here, we show for the first time that in vivo peg-IFNλ displays significant immunostimulatory properties with improvements in the main effectors mediating anti-HBV immunity. Interestingly, the maintenance in HBV-specific CD8+ T cells in the presence of peg-IFNλ is in contrast to previous studies showing that peg-IFNα treatment for CHB results in a detrimental effect on the functionality of this important antiviral T cell compartment.
Der Vikos-Aoos Nationalpark liegt im Pindos Gebirge im Nordwesten von Griechenland, nahe der albanischen Grenze, einem bryologisch noch wenig untersuchtem Gebiet. Es wird die Moosflora in dem Kalkgebiet in der Umgebung des Dorfes Vikos (ca. 800 m NN) skizziert. Ein Schema zeigt die Vorkommen der ca. 150 Arten in den unterschiedlichen Lebensräumen, wie Wegrand im Dorf, Trockenmauern und Steinriegel, Sträucher und Bäume, Fluss und Sickerflur, montane Phrygana und Felsen sowie alpine Steinrasen. Viele der Arten werden erstmals für das Pindos-Gebiet genannt, einige Arten sind Neufunde für Griechenland. Eine Art (Cinclidotus confertus Lüth) konnte neu für die Wissenschaft entdeckt werden.
Die Moose Zyperns
(2009)
Während einer fünftägigen Exkursion in den Süden Zyperns wurden22 Lebermoosarten und 110 Laubmoosarten gefunden., Bryum elegans, B. gemmiparum, B. kunzei, Cephaloziella turneri, Fissidens dubius, Grimmia dissimulata, Lejeunea cavifolia, Orthotrichum ibericum, O. macrocephalum, O. pumilum, O. speciosum var brevisetum, Pottia conica, Pterygoneurum ovatum, Riccia atromarginata, R. ciliifera, Schistidium crassipilum, S. robustum, Tortula canescens, T. virescens und Zygodon catarinoi wurden neu für Zypern entdeckt. Eine kommentierte Liste der Moose Zyperns mit Literaturangaben wird gegeben.
Eine Liste aller bisher für Sardinien festgestellten Vertreter der Bryophyta wird präsentiert; sie basiert auf Checklisten aus jüngerer Zeit, ergänzt durch Funde der Autoren im Rahmen eines Geländeaufenthalts im Mai 2008. Als neu für Sardinien werden die folgenden Moose gemeldet: Bryum barnesii, B. caespiticium var. imbricatum (B. kunzei), B. mildeanum, Encalypta trachymitria, B. elegans, Fissidens celticus, F. curvatus, F. taxifolius var. pallidicaulis, Grimmia dissimulata, G. meridionalis, Heterocladium dimorphum, Octodiceras fontanus, Orthotrichum pallens, O. striatum, Phascum leptophyllum, Plagiomnium elatum, Pogonatum aloides var. minimum und Racomitrium elongatum. Claopodium whippleanum ist neu für Italien.
