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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 35 (1979), S. 1109-1110 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect ofα-mercaptopropionyl-glycine on the in vitro proliferative response of healthy subjects' lymphocytes was studied. Low doses of the drug enhanced spontaneous lymphocyte blastigenesis but had no effect on the PHA-induced blastic response. With increasing concentrations ofα-mercaptopropionyl-glycine inhibition of3H-thymidine incorporation was found in unstimulated as well as in PHA stimulated lymphocytes.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 33 (1977), S. 1520-1521 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A new effect of NCV on lymphocytes is demonstrated. This property is the capacity to act as a mitogen in and of itself. The possible mechanisms of this phenomenon are discussed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Immunology ; Medulloblastoma ; Brain tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Preliminary findings in the evaluation of the immune response of children with primary neoplasms of the CNS, mainly medulloblastomas, are reported and discussed. A broad scheme for the monitoring of B- and T-cell-dependent immunity and of delayed hypersensitivity reactions in this type of patient is presented. The most important immunobiological findings are discussed. Special attention is given to the striking failure of the T-cell-dependent pool (currently identified by “active” RFC and blastigenesis tests) and to the remarkable decrease of hypersensitivity reactions (depressed skin-test response), both of which seem to be related to the degree of malignancy of the tumour. A very peculiar feature,i.e., the appearance of cells with natural cytotoxic activity, is dealt with in some detail. Our present knowledge concerning the immunobiology of primary CNS neoplasms is still very incomplete, but seems to suggest a possible role for immunotherapy in paediatric neurosurgery.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International archives of occupational and environmental health 43 (1979), S. 99-105 
    ISSN: 1432-1246
    Keywords: Acetylcholinesterase (AchE) ; Glucose-6-Phosphate Dehydrogenase (G-6-PDh) ; Pyruvate kinase (PK) ; Lactate Dehydrogenase (LDH) ; alfa Hydroxybutyrate Dehydrogenase (alfa HBDH) measurements (activities), 0.4 mg/m3 exposure ; Ozone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 22 subjects exposed during work to ozone concentrations ranging from 0.160 to 0.290 ppm, the following enzyme activities were measured at the end of a normal work shift: AchE, G-6-PDh, PK in erythrocytes, LDH and alfa HBDH in serum. AchE of erythrocytes and serum LDH and alfa HBDH were determined also after three weeks of nonexposure to ozone. LDH and alfa HBDH activities decreased at the second determination; the difference between the two determinations was statistically significant (P〈0.001). The results indicate that an exposure to 0.2 ppm of ozone, if prolonged in time, may affect the air-blood barrier and possibly cause alteration of some serum enzyme activities. Concentrations of ozone around 0.2 ppm should therefore be avoided in urban and industrial areas.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1440
    Keywords: Lymphocyte ; Rheumatoid arthritis ; Inhibitory plasma factors ; Lymphozyten ; Primär chronische Polyarthritis ; Plasmatische inhibierende Faktoren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurde in vitro an 51 Patienten mit chronischer Polyarthritis die lymphozytäre Blastogenese zu PHA in Kulturen mit autologem oder normalem Plasma sowie auch die E-Rosetten-Bildung und die Gegenwart an Oberflächen-Ig untersucht. Während der Prozentsatz an T- und B-Zellen fast normal bleibt (52,1±2,1% und 18,1±2,1%, n.W. 55,6±2,0% und 16,2±0,8%), ist die Blastogenese in den Kulturen mit 25% autologem Plasma (5 399±709 cpm gegen dem Standartwert von 13 182±920 cpm) bedeutend verringert. Diese kehrt fast zu den Normalwerten zurück, sobald man das Patientenplasma mit Plasma von Gesunden ersetzt (12 189±1 081 cpm). Das rheumatoide Plasma ist imstande die Blastogenese von 11 normalen Personen zu hemmen (7 395±750 cpm). Eine vorhergehende Inkubation für 90′ der Lymphozyten von 14 Kontrollpersonen in rheumatoidem oder autologem Plasma führt zu einer bedeutenden Differenz in der E-Rosettenbildung (40,8±1,4% und 56,2±2,1%). Dies bedeutet das die funktionelle Hemmung der T-Lymphozyten bei dieser Krankheit auf plasmatische Faktoren zurückzuführen ist.
    Notes: Summary The lymphocytes blastigenesis to PHA in culture with autologous or normal plasma, the formation of E rosettes and the presence of immunoglobulins on the lymphocytes surface were evaluated in 51 patients with chronic primary polyarthritis. While the percentage of T and B cells was almost normal (52.1±2.1% and 18.1±1.1%, N.V. 55.6±2.0% and 16.2±0.8%), the blastigenesis was significantly reduced in cultures with a 25% autologous plasma (5399±709 cpm compared to 13,182±920 cpm of the normal standard) and returned towards normal values when it was replaced by the plasma of a normal subject (12,189±1 081 cpm). The rheumatoid plasma was capable of reducing the blastigenesis in 11 normal subjects (7 395±750 cpm). The preincubation for 90′ of the lymphocytes of 14 controls in rheumatoid or autologous plasma induced a significant reduction in the formation of spontaneous rosettes (40.8±1.4% and 56.2±1.7%). These results suggest that the reduced function of the T lymphocytes in this disease is due to plasma factors.
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  • 6
    Publication Date: 2018-04-27
    Description: Highlights • We examine interplay between historical seismicity, mass failures and turbidites during sapropel S1 deposition; • We reconstruct chronology of earthquake triggered turbidites in the Ionian Sea during sapropel depostion; • We reconstruct the age of sapropel S1 in our core (6.0-10.2 kyr cal. BP) through Oxcal age modeling; • Turbidite emplacement time was deduced through age modeling. • We compiled a catalogue of mass flow events during several earthquake cycles. Abstract The recurrence of mass-flow units within sapropel S1, an organic carbon-rich lower Holocene marker bed in the Eastern Mediterranean Sea, was used to study the interplay between earthquakes and sedimentation along the seismically active Calabrian Arc (Ionian Sea). Nine turbidite beds interrupt anoxic conditions during the deposition of sapropel S1. Each of these turbidites is associated with sharp grain size and geochemical elemental anomalies (high Al and Si, low Ca and coarse-grained basal part marked by Zr peaks), and with displaced foraminiferal species from different bathymetric ranges. We used these proxies to identify turbidite beds also above and below the sapropel, where turbidite signature is less clear due to the absence of major color changes. Turbidite structure and composition, as well as comparison with historical seismoturbidites, suggest a seismic triggering for such mass flow events. The peculiar color, well-known composition, geochemistry and age of sapropel S1, make this unit a key bed within which turbidites may be considered a sort of sedimentary “bar code” recording high-energy events within the background pelagic sedimentation; deciphering this code will reconstruct paleo-seismicity in this well-defined stratigraphic interval. The pelagic units bracketing turbidite beds were radiometrically dated, and the age of the sapropel S1, deduced through age modeling, is between 6.0 and 10.2 kyr cal BP. The emplacement age of each turbidite was estimated considering the average time-interval between successive turbidite beds (from pelagic sediment thickness and sedimentation rate). Subsequently these ages were further refined through age modeling. In this way, we compiled a catalogue of mass flow events during sapropel S1 deposition, a time span long enough to include several earthquake cycles and allow reliable seismic and tsunami hazard assessment in this area.
    Type: Article , PeerReviewed
    Format: text
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  • 7
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    Unknown
    AGU (American Geophysical Union) | Wiley
    In:  Geochemistry, Geophysics, Geosystems, 14 (1). pp. 112-140.
    Publication Date: 2014-03-11
    Description: The Calabrian Arc (CA) subduction system is part of the Africa-Eurasia plate boundary, is one of the most seismically active regions in the Mediterranean Sea, and has been struck repeatedly by destructive historical earthquakes. In this study we investigate the effects of historical earthquakes on abyssal marine sedimentation through the analysis of the turbidite record. We collected gravity cores in tectonically controlled basins where the eastern Mediterranean pelagic sequence is interbedded with re-sedimented units. Textural, micropaleontological, geochemical and mineralogical signatures reveal three turbidite events in the last Millennium. We dated the turbidite sequences from two different cores using different radiometric methods, while the average time interval between successive turbidite beds was estimated from pelagic sediment thickness and sedimentation rates; chronologies were refined through age modelling that provided age ranges (2σ) of each turbidite bed. The results suggest that turbidite emplacement was triggered by three historical earthquakes recorded in the area (i.e. the 1908, 1693 and 1169 events); their magnitude, epicentral location and associated tsunamis support causative faults located in the Ionian Sea. The source for all the turbidites, as inferred from their mineralogy, is the metamorphic basement outcropping in southern Calabria and/or North-Eastern Sicily. Turbidite composition and cable breaks for the 1908 event have been used to infer likely travelling paths and seismogenic faults in the subduction system. Our findings suggest that Ionian Sea turbidites represent more than 80% of sedimentation and may be seabed archives of paleo-earthquakes capable of reconstructing seismicity back in time, during several earthquake cycles. Key Points We examine interplay between historical seismicity, mass failures and turbidites We reconstruct chronology of earthquake triggered turbidites in the Ionian Sea Turbidite composition has been used to reconstruct sediment source
    Type: Article , PeerReviewed
    Format: text
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  • 8
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    Unknown
    In:  [Invited talk] In: IMS-IAS 33. International Meeting of Sedimentology, 10.-12.10.2017, Toulouse, France .
    Publication Date: 2018-05-09
    Type: Conference or Workshop Item , NonPeerReviewed
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