Library

Your search history is empty.
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chemistry  (2)
  • gastric lymphoma  (2)
  • Best. von Nitroverbindungen, aromat.  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Annals of oncology 8 (1997), S. 41-44 
    ISSN: 1569-8041
    Keywords: Epstein–Barr virus ; gastric lymphoma ; Helicobacter pylori ; mucosa-associated lymphoid tissue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Helicobacter pylori (H. pylori) infection has been postulatedto be a pathogenetic factor in gastric lymphoma. However, the etiologicalfactors for gastric lymphoma could vary in different populations. Materials and methods: We looked for histological evidence of H. pyloriinfection in 53 gastrectomy specimens from Hong Kong Chinese patients withprimary gastric B-lymphoma. We also screened for Epstein–Barr virus(EBV) in these cases using in situ hybridization with oligonucleotide probesfor EBV-encoded small RNA1 and 2. Results: H. pylori was found in 29/53 (55%), including 8/13(62%) cases of low-grade lymphoma of mucosa-associated lymphoidtissue (MALT) type. These infection rates in gastric lymphoma are lower thanthose reported in Western populations (80%–100%) andcomparable to that found in healthy Chinese blood donors (55%) or innon-ulcer dyspeptic patients (52%–57%). EBV was found intumor cells only in one case of high-grade gastric lymphoma with low-gradeMALT component which was H. pylori-negative, and in occasional nontumorlymphoid cells in 7 other cases. Conclusions: These results suggest that (1) the role of H.pylori in pathogenesis of gastric lymphoma may vary in different populations;(2) very few gastric lymphomas are associated with EBV; (3) not all low-gradegastric MALT lymphomas are H. pylori-dependent.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of oncology 8 (1997), S. 41-44 
    ISSN: 1569-8041
    Keywords: Epstein–Barr virus ; gastric lymphoma ; Helicobacter pylori ; mucosa-associated lymphoid tissue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Helicobacter pylori (H. pylori) infection has been postulated to be a pathogenetic factor in gastric lymphoma. However, the etiological factors for gastric lymphoma could vary in different populations. Materials and methods: We looked for histological evidence of H. pylori infection in 53 gastrectomy specimens from Hong Kong Chinese patients with primary gastric B-lymphoma. We also screened for Epstein–Barr virus(EBV) in these cases using in situ hybridization with oligonucleotide probes for EBV-encoded small RNA1 and 2. Results: H. pylori was found in 29/53 (55%), including 8/13(62%) cases of low-grade lymphoma of mucosa-associated lymphoid tissue (MALT) type. These infection rates in gastric lymphoma are lower than those reported in Western populations (80%–100%) and comparable to that found in healthy Chinese blood donors (55%) or in non-ulcer dyspeptic patients (52%–57%). EBV was found in tumor cells only in one case of high-grade gastric lymphoma with low-grade MALT component which was H. pylori-negative, and in occasional nontumor lymphoid cells in 7 other cases. Conclusions: These results suggest that (1) the role of H. pylori in pathogenesis of gastric lymphoma may vary in different populations;(2) very few gastric lymphomas are associated with EBV; (3) not all low-grade gastric MALT lymphomas are H. pylori-dependent.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 280 (1976), S. 30-30 
    ISSN: 1618-2650
    Keywords: Best. von Nitroverbindungen, aromat. ; Volumetrie ; Reduktion mit Fe(II)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 398 (1973), S. 72-82 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organische Derivate des Zinns. III. Reaktionen des Trialkylzinnäthoxids mit Aminoalkoholen.Die Reaktionen von Tributylzinnäthoxid, Bu3SnOC2H5, mit N,N-Dialkylaminoalkoholen ergeben Bu3SnORNR2- (R = s. Abstract). Bei Reaktionen von Bu3SnOC2H5 mit N-Methyläthanolamin, HOCH2 · CH2NHMe, und verschiedenen Aminoalkoholen, HORNH2 (R = s.Abstract) reagieren sowohl Hydroxyl- wie auch Aminogruppen unter Bildung von Verbindungen wie Bu3SnOCH2 · CH2NHMe, Bu3SnOCH2 · CH2NMeSnBu3, Bu3SnO · R · NH2, Bu3SnO · R · NH · SnBu3 bzw. Bu3SnO · R · N(SnBu3)2. Mit o-Aminophenol wird nur Bu3SnO · C6H4NH2 gebildet.
    Notes: The reactions oi tributyltin ethoxide, Bu3SnOEt, with N,N-dialkylalkanolamines, HORNR2 (where R = —CH2 · CH2—, —CH2 · CH2 · CH2— and —CH2 · MeCH—; R = —CH3 and —C2H5) give Bu3SnORNR2. In reactions of Bu3SnOEt with N-methylethanolamine, HOCH2 · CH2NHMe, and various alkanolamines, HO · R · NH2, (where R = —CH2 · CH2— —CH2 · CH2 · CH2—, —CHMe · CH2— —CH2 · Me2C— and —CH2 · CH · CH2 · Me) both the hydroxy as well as the amino groups show reactivity to form products of the type: Bu3SnOCH2 · CH2NHMe, Bu3SnOCH2 · CH2NMeSnBu3, Bu3SnO · R · NH2, Bu3SnO · R · NHSnBu3, and Bu3SnO · R · N(SnBu3)2, respectively. The reaction between Bu3SnOEt and o-aminophenol yields only Bu3SnO · C6H4NH2.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 13 (1982), S. 25-29 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: An analysis of the Raman and infrared spectra of di-potassium tartrate hemi-hydrate (DKT), K2C4H4O6·½H2O, is reported. It has been inferred that the C4H4O62- ion and H2O molecule in a DKT crystal occupy points of C1 site symmetry. Various units of C4H4O62- ion/(H2O molecule) located at crystallographically distinguishable positions in this crystal do not appear to be different in their structure or the force fields governing their vibrational dynamics.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...