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  • 1
    Publication Date: 2022-01-10
    Description: Stalagmites are an extraordinarily powerful resource for the reconstruction of climatological palaeoseasonality. Here, we provide a review of different types of seasonality preserved by stalagmites and methods for extracting this information. A new drip classification scheme is introduced, which facilitates the identification of stalagmites fed by seasonally responsive drips and which highlights the wide variability in drip types feeding stalagmites. This hydrological variability, combined with seasonality in Earth atmospheric processes, meteoric precipitation, biological processes within the soil, and cave atmosphere composition means that every stalagmite retains a different and distinct (but correct) record of environmental conditions. Replication of a record is extremely useful but should not be expected unless comparing stalagmites affected by the same processes in the same proportion. A short overview of common microanalytical techniques is presented, and suggested best practice discussed. In addition to geochemical methods, a new modelling technique for extracting meteoric precipitation and temperature palaeoseasonality from stalagmite δ18O data is discussed and tested with both synthetic and real-world datasets. Finally, world maps of temperature, meteoric precipitation amount, and meteoric precipitation oxygen isotope ratio seasonality are presented and discussed, with an aim of helping to identify regions most sensitive to shifts in seasonality.
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 2
    ISSN: 1569-8041
    Keywords: chemotherapy ; extranodal lymphoma ; MALT lymphomas ; ocular adnexal lymphomas ; radiotherapy ; survival
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The aim of this study was to assess clinicopathological characteristics and outcome in a series of primary ocular adnexal lymphomas (POALs). Patients and methods: Nineteen patients with localised (stage IE) POAL were followed for a median of 96 months (24–156). The diagnosis was based on surgical biopsies followed by immunohistochemistry in 16 cases or fine-needle aspiration followed by immunocytophenotypic analysis in three cases. Twelve patients were treated with local radiotherapy (RT), five with chemotherapy (CT), and two refused further therapy after apparently radical tumour removal achieved by the diagnostic excisional biopsy. Results: The histological and immunological pattern was consistent with a diagnosis of MALT-type lymphoma (11 cases), follicular center non-Hodgkin's lymphoma (three cases), a large-cell variant of Burkitt's lymphoma (one case), and large-cell transformed MALT lymphoma (one case). Low-grade lymphoma was diagnosed in the three cases which underwent fine-needle aspiration biopsy. All of the patients achieved and maintained complete remission except for those treated with surgical excision alone (two MALT conjunctival lymphoma cases): one of these relapsed locally, the other experienced the systemic spread of a transformed diffuse large-cell lymphoma and died 72 months after diagnosis. The side effects consisted of two cases of RT-related cataract after 52 and 72 months. Conclusions: Regardless of histology, prognosis was excellent when surgery plus RT was adopted, and CT seems to be a valid alternative to RT. Surgery alone may be sub-optimal.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 1140-1141 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto I dati esposti indicano che l'incremento del numero dei loci dell'istocompatibilità ai quali differiscono i due ceppi di topi «inbred» DBA/2 e C57BL/6 è inversamente proporzionale al tempo trascorso dal trapianto, ed è maggiore nelle femmine.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0584
    Keywords: Key words Systemic sclerosis ; non-Hodgkin's lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The association of systemic sclerosis (SSc) and non-Hodgkin's lymphoma (NHL) is a rare event whose pathogenesis remains to be clarified. We describe a case of NHL in a patient with SSc, in whom the NHL was particular in terms of clinical presentation (primitive muscle and bone involvement) and histologic type (large multilobated B-cell variant). The lymphoma was clinically aggressive but responded well to therapy. Surveillance for the development of "atypical" NHL is suggested in SSc cases.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 55 (1987), S. 145-152 
    ISSN: 1432-0584
    Keywords: Chemotherapy ; Myeloma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-three patients with advanced refractory multiple myeloma were treated with a combination chemotherapeutic regimen consisting of four-day continuous infusion of vincristine and doxorubicin plus intermittent high-dose dexamethasone (VAD). All patients included in the study were heavily pretreated with cytostatics and radiotherapeutic measures, and generally presented in poor general condition. In 3 of the 16 evaluable patients (18%) a response, and in 7 patients (44%) an improvement as defined by a reduction in tumor mass by more than 50% was achieved. Six patients had progressive disease. Evaluation of survival for responders (15 mos) versus non-responders (2 mos) by the landmark method seems to confirm the relative therapeutic efficacy of the VAD protocol in refractory multiple myeloma. The somewhat inferior response rate as well as the occurrence of considerable toxicity in several cases (when compared to the recent M. D. Anderson trial) may be related to differences in clinical features and pretreatment status of the two studies' population.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0584
    Keywords: Key words Non-Hodgkin's lymphoma ; Mucosa-associated lymphoid tissue ; Clinical findings ; Pathological findings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Mucosa-associated lymphoid tissue (MALT) lymphomas are indolent neoplasms which tend to remain localized for a long time before spreading. We describe here the case of a 36-year-old woman with a low-grade MALT lymphoma involving the lung, stomach, lingual tonsil, and bone marrow at the time of diagnosis. The clonal origin of the pulmonary and bone marrow neoplastic infiltrates was assessed by means of gene rearrangement analysis. All of the involved sites were infiltrated by centrocyte- and monocytoid-like cells expressing the B-cell-associated antigens CD19 and CD20 and showed IgM λ chain restriction; no CD5, CD10, or CD43 expression was detectable. As the patient had a history of recurrent bronchitis, and computed tomography performed 3 years before the lymphoma diagnosis had already revealed a lesion of the left lung, we conclude that the present case probably represents a pulmonary low-grade MALT lymphoma characterized by an early and unusual involvement of different mucosal sites and bone marrow.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dimethyl sulfoxide was found to inhibit histamine release induced by compound 48/80 at concentrations ranging from 0.6 to 10%. At higher concentrations (20 and 40%) the substance caused histamine release by itself. Heat inactivation at 50°C of the mast cells did not prevent this release, suggesting a lytic mechanism for this action and this was further proved by the trypan blue dye exclusion test. Dimethyl sulfoxide was also active in inhibiting histamine release induced by other polyamines such as bradykinin, polymyxin B and protamine, by concanavalin A and dextran, by ionophore A23187 and by three anthracyclines, doxorubicin, daunomycin and epirubicin. In contrast, the substance did not inhibit histamine release induced by a monoamine, chlorpromazine and by the detergent Triton X-100.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The antineoplastic drug adriamycin, at a concentration of 100 μg/ml, caused a significant histamine release from rat peritoneal mast cells. This exocytotic process was unaffected by pretreatment with various concentrations of catalase, superoxide-dismutase,d-mannitol, alpha-tocopherol and reduced glutathione. Only very high concentrations of n-acetylcysteine significantly limited this release; this substance was also active in limiting histamine secretion induced by a classic mast cell secretagogue, compound 48/80.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In the present study, we evaluated in mouse and rat mast cells if adriamycin uptake is related to histamine release. In addition, the uptake of the antineoplastic drug and histamine release were studied in other normal and neoplastic cell lines. The effect of sodium cromoglycate was also examined. Adriamycin induced histamine release from mixed or purified mast cells of the mouse and rat. This exocytotic response was quantitatively related to intracellular concentrations of adriamycin. Significant differences in adriamycin uptake were observed between mast cells and other normal and neoplastic cells. When peritoneal mast cells were treated with sodium cromoglycate, histamine release and adriamycin uptake were significantly reduced. In contrast, incubation of other cells with cromoglycate only slightly reduced the cellular concentration of the antineoplastic drug.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of the monovalent carboxylic ionophore monensin, which mediates a one-for-one exchange of intracellular H+ for extracellular Na+, was investigated in purified rat peritoneal mast cells. Monensin inhibited histamine secretion induced by compound 48/80, adriamycin and the calcium ionophore A23187; the inhibitory effect was maximal when the compound was added at least 10 min before the secretagogues. Washing of cells before addition of the secretagogues did not abolish the inhibitory effect of monensin. On the contrary the carboxylic ionophore was completely ineffective in preventing concanavalin A-induced histamine release. When rat peritoneal mast cells were incubated in the presence of monensin for longer period (up to 5 hours), the substance induced a slow, progressive and dose dependent histamine release, which, at least for lower doses was noncytotoxic. The secretory effect of monensin was still present if the ionophore was washed away after 10 min of incubation, and the incubation continued in drug-free medium. Monensin stimulated histamine secretion was strictly dependent on extracellular Na+ concentrations, and independent on extracellular Ca++.
    Type of Medium: Electronic Resource
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