Library

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 771 (1984), S. 245-248 
    ISSN: 0005-2736
    Keywords: (E. coli) ; Ion flux ; K^+ ; Rb^+ ; Virus infection
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Lupus erythematodes ; Kutane Manifestationen ; Einteilung ; Klinische Symptomatik ; Sonderformen ; Keywords Lupus erythematosus ; Cutaneous manifestations ; Classification ; Clinical symptoms ; Distinct subjects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Lupus erythematosus (LE) is a disease with a wide spectrum of cutaneous and systemic manifestations and has been the subject of many studies over several decades. Clinical features of patients with LE show a great variation, and for this reason it is difficult to develop a unifying concept of this disease. Consequently, this has led to the identification of subsets which have been defined by constellations of clinical and photobiological features, histological changes as well as laboratory abnormalities. Besides the characteristic classical forms such as systemic LE (SLE), subacute cutaneous LE (SCLE), and discoid LE (DLE), there are uncommon variants of LE which often lead to diagnostic difficulties. Bullous LE (BLE) and urticarial vasculitis are listed as characteristic but non-specific manifestations of systemic LE. LE tumidus (LET), LE hypertrophic/verrucous (LEHV), chilblain LE, and LE profundus (LEP) are uncommon subtypes of chronic cutaneous LE. Annular erythema and papulonodular mucinosis are further uncommon cutaneous manifestations of LE. This clinical review summarizes the typical features of the uncommon forms of LE in order to improve clinical diagnostic precision and to achieve a better differentiation of the subtypes.
    Notes: Zusammenfassung Der Lupus erythematodes (LE) ist eine Erkrankung, die ein breites Spektrum von kutanen und systemischen Manifestationen aufweist und seit vielen Jahrzehnten die medizinische Wissenschaft beschäftigt. Die große Vielfalt der klinischen Befunde erlaubt es nicht, ein einheitliches Krankheitsbild zu definieren, so dass eine Klassifikation verschiedener Subtypen, die sich bezüglich klinischer, photobiologischer, histologischer und serologischer Merkmale unterscheiden, eingeführt wurde. Neben den gut definierten klassischen Formen wie systemischer LE (SLE), subakut kutaner LE (SCLE) und diskoider LE (DLE) gibt es seltene Manifestationen, die immer wieder diagnostische Schwierigkeiten bereiten. Der bullöse LE (BLE) und die Urtikariavaskulitis werden als charakteristische, aber nicht spezifische Manifestationsformen des systemischen LE aufgeführt. Der LE tumidus (LET), der LE hypertrophicus/verrucosus (LEHV), der Chilblain LE und der LE profundus (LEP) werden als seltene Subtypen des chronisch kutanen LE betrachtet. Das anuläre Erythem und die papulöse Muzinose werden als weitere seltene kutane Manifestationsformen des LE beschrieben. In dieser klinischen Übersicht werden die charakteristischen Merkmale dieser seltenen Sonderformen des LE herausgestellt, um zum weiteren Verständnis und zur genaueren Differenzierung der verschiedenen Subtypen beizutragen.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-5036
    Keywords: Al effect ; microprobe analysis ; nutrient uptake ; pH effect ; Picea abies ; stable isotope labelling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In a model system using intact spruce trees (Picea abies [L.] Karst.) we followed the path of magnesium, calcium and potassium during uptake into the root and during long-range transport into the shoot, by multiple stable isotope labelling. The roots of two- and three-year-old spruce trees originating from soil culture were removed from the soil and, in part or in toto, exposed to labelling solutions containing the stable isotopes 25Mg or 26Mg, 41K and 42Ca or 44Ca. Optical-emission-spectroscopy (ICP-OES) of plant fractions and labelling solutions was combined with the quantitative analysis of stable isotope ratios in sections of shock frozen, cryosubstituted material using the laser-microprobe-mass-analyser (LAMMA). This combination allowed us to distinguish, both in bulk samples and on the cellular level between (i) the fraction of elements originally present in the plant before the start of the labelling, (ii) the material taken up from the labelling solution into the plant and (iii) any material released by the plant into the labelling solution. In single-root labelling experiments, roots of three-year-old spruce trees, grown in nursery soil, were exposed to various pH conditions. The exchange of Mg and Ca with the labelling solution was nearly 100% in the cell walls of the mycorrhized finest roots. This exchange was only slightly affected by a step down to pH 3.5. The absolute Mg and Ca content in the cell walls was moderately reduced by incubation at pH 3.5 and strongly reduced in the presence of Al at this pH. After a pH 3.5 and 2 mM Al treatment we found Al in the xylem cell walls and the cortex cell lumina at elevated concentrations. To analyse the combined effect of high Al and high proton concentrations on the long-range transport, we used a “split-root system”. The root mass of an intact two-year-old spruce tree, grown in mineral soil, was divided into even parts and both halves incubated in solutions with two sets of different stable isotopes of Mg and Ca (side A: no Al, 25Mg and 42Ca; side B: +Al, 26Mg and 44Ca) and 41K on both sides. We observed a large uptake of Mg, Ca and K into the plant and a pronounced release. The net uptake of all three elements was lower from the Al-doted solution. In cross-sections of the apical shoot we found after seven-day labelling period about 60–70% of the Mg and Ca and 30% of the K content in the xylem cell walls originating from both labelling solutions. The clear majority of the Mg and Ca label originated from the Al-doted side.
    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...