GLORIA

GEOMAR Library Ocean Research Information Access

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
  • Springer  (31)
  • National Academy of Sciences  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz 42 (1999), S. 706-712 
    ISSN: 1437-1588
    Keywords: Schlüsselwörter Tuberkulose ; Impfung ; BCG ; Key words Tuberculosis ; Vaccine ; BCG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Tuberculosis is, on a global level, still one of the most important infectious diseases. Effective control of tuberculosis could probably be achieved by a combination of chemotherapy and vaccination. Although a vaccine (BCG) is available, it cannot prevent the development of tuberculosis of the lungs in adults as the most frequent disease manif- estation. The development of a new vaccine against tuberculosis therefore remains a primary goal. Because the immune defense against M. tuberculosis depends on different T-cell subpopulations, the optimal combination has to be stimulated to achieve protection. Because one third of the world population is already infected with M. tubercolosis, possibly two vaccines are needed: one therapeutic vaccine to fight an already estab- lished infection and a preventive vaccine. Currently different vaccine candidates are under development. It is still to early to predict, which may be successful.
    Notes: Zusammenfassung Die effektive Kontrolle der Tuberkulose, die noch immer zu den weltweit bedeutendsten Infektionskrankheiten zählt, wird am ehesten durch eine Kombination aus Chemotherapie und Impfung erreicht. Mit BCG steht zwar ein Impfstoff zur Verfügung, der jedoch den Ausbruch der Lungentuberkulose bei Erwachsenen als häufigste Erkrankungsform nicht verhindern kann. Die Entwicklung eines neuen Impfstoffs gegen Tuberkulose ist daher vorrangiges Ziel. Da die Infektabwehr von unterschiedlichen T-Zellpopulationen getragen wird, muß angestrebt werden, die für den Schutz optimale Kombination zu stimulieren. Ein Drittel der Weltbevölkerung ist mit dem Erreger bereits infiziert, so daß möglicherweise zwei Impfstoffe benötigt werden: einer zur Bekämpfung der bereits etablierten Infektion (Infektionstherapie) und ein anderer zur raschen Erregerabwehr nach Erstkontakt (Infektionsprävention). Derzeit werden unterschiedliche Impfstoffkandidaten entwickelt, deren Erfolgschancen noch schwer abzuschätzen sind.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 357 (1998), S. 191-196 
    ISSN: 1432-1912
    Keywords: Key words Mouse ; Stomach ; bradykinin ; Knockout B2 receptor ; B1 receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to investigate the pharmacological profile of the kinin B1 and B2 receptors in isolated stomachs from wild-type control and B2 receptor knockout mice. Isometric contractions evoked by bradykinin (BK) (9 nM) and desArg9BK (28 nM) were shown to be different. The contraction induced by desArg9BK had a longer duration than that evoked by BK and increased during incubation in vitro in stomachs of wild-type controls, while in the transgenic B2 receptor knockout mice, the contractions evoked by desArg9BK and BK were similar and followed the B1 receptor agonist pattern. BK but not the carboxypeptidase-resistant analog, [Phe8ψ(CH2-NH)Arg9]BK, was found to be active in the stomach of B2 receptor knockout mice. BK-induced contractions were prevented by mergetpa (a carboxypeptidase M inhibitor) (10 μM) and by a the B1 receptor antagonist, AcLys[DβNal7,Ile8]desArg9BK (R 715) (0.88 μM), while not being influenced by the B2 receptor antagonist HOE 140 (0.38 μM). BK and [Phe8ψ(CH2-NH)Arg9]BK were potent contractants of the wild-type mice stomach and their effects were not influenced by mergetpa or by the B1 receptor antagonist: they were reduced by HOE 140. After incubation in vitro for 3–4 hours, the tissues were treated with HOE 140 (4 μM) and FR-173657 (17 μM) to eliminate B2 receptor function. In these tissues, BK evoked a B1-like contraction which was inhibited by mergetpa (10 μM) and antagonized by R 715 (8 μM). The results indicate that BK acts primarily on B2 receptors. However, after intramural conversion to desArg9BK, activation of B1 receptors of the mice stomach occurs. In the tissues of B2 receptor knockout mice, BK behaves as a pure B1 receptor agonist while in stomachs of control animals, the B2 receptor contribution is overwhelming. After complete blockade of the B2 receptor, BK is able to evoke B1-mediated responses similar to those observed in tissues of B2 receptor knockout mice. It is concluded that the disruption of the B2 receptor gene eliminates the B2 receptor without influencing the B1 receptor system.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 197 (1940), S. 204-209 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Überblickt man die gesamten hier mitgeteilten Versuchsergebnisse, so kann man folgendes feststellen: Die Alkoholnarkose läßt sich durch Cardiazol, Coramin, Pervitin und Cycliton antagonistisch beeinflussen. Bei Cardiazol ergibt sich ein Optimum mit guter Weckwirkung in der Dosierung von 2,5 mg/100 g. Die höhere Dosierung von 5 mg hat geringere Weckwirkung. Auch bei Coramin ist ein Optimum bei 15 mg vorhanden, während die höhere Dosierung von 30 mg synergistisch mit dem Alkohol wirkt, im Sinne einer Verlängerung der Narkose. In gleicher Weise verkürzte auch Pervitin die Alkoholnarkose, eine lähmende Wirkung bei höherer Dosierung war nicht erkennbar. Cycliton wirkte in der niedrigeren Dosierung antagonistisch, während höhere Dosen wie bei Coramin die narkotische Wirkung des Alkohols verstärkten. Auf die Chloralosenarkose wirkte keines der Analeptica antagonistisch ein, doch war die Beurteilung durch die starke Reflexerregbarkeit, die die Chloralose hervorrief, praktisch unmöglich. Cardiazol und Pervitin verlängerten beide etwas die Narkose. Coramin und Cycliton wirkten ausgesprochen toxisch, sie töteten schon in niedrigen Gaben eine große Zahl der Tiere in der Chloralosenarkose.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Der Gynäkologe 32 (1999), S. 377-385 
    ISSN: 1433-0393
    Keywords: Key words Pregnancy • Delivery • Adult congenital ; heart disease ; Schlüsselwörter Schwangerschaft • Angeborene Herzfehler • Erwachsene • Entbindung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Prognose angeborener Herzfehler hat sich in den letzten Jahrzehnten dramatisch verbessert. Gleichzeitig hat auch die Zahl von Frauen, die mit einem angeborenen Herzfehler schwanger werden, so stark zugenommen, daß diese inzwischen 30–50 % aller kardialen Erkrankungen bei Schwangeren ausmachen. Die Mehrzahl der Patientinnen mit angeborenen Herzfehlern hat eine oder mehrere Korrekturoperationen überstanden. Angeborene Herzfehler in ihrer nativen Form, kommen wesentlicher seltener vor. Während der Schwangerschaft kommt es zu Umstellungsreaktionen, die – in Abhängigkeit vom zugrundeliegenden Herzfehler – die Hämodynamik in unterschiedlicher Weise beeinflussen. Die veränderte Hämodynamik muß für jeden Herzfehler gesondert abgeschätzt werden und erfordert eine individuelle Betreuung der Patientinnen. Probleme betreffen die Auswirkung der Schwangerschaft auf die Grunderkrankung, sowie die Auswirkung der Grunderkrankung auf den Schwangerschaftsverlauf und den Fetus. Die Schwangerenberatung beinhaltet Informationen über genetische Risiken, potentiell teratogene Substanzen, Schwangerschaftsverlauf, Entbindung und postpartale Nachsorge. Heutzutage können die meisten Patientinnen mit angeborenen Herzfehlern eine Schwangerschaft gut bewältigen, wenn eine enge Kooperation zwischen Kardiologen und Gynäkologen gewährleistet ist.
    Notes: Summary Because of advances in medical treatment and surgical management the number of adolescent females with congenital heart disease increased significantly during the last decade. On the other hand, the incidence of rheumatic heart disease, which accounted for the largest number of pregnant women with heart disease in the past, has declined over the years. Pregnancy is associated with a lot of physiological adjustments, such as changes in blood volume, stroke volume and cardiac output and may result in deleterious clinical effects in patients with congenital heart disease. Although a good outcome for these woman can often be expected, congenital heart disease still represents a high-risk pregnancy for both mother and infant. The actual risk depends on the type of malformation and functional impairment of the mother. To accompany these women safely through pregnency, good cooperation between pediatric and adult cardiologists, obstetrician and other physicians is necessary.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 84 (1995), S. 568-577 
    ISSN: 1437-3262
    Keywords: Age dating ; Vosges mountains ; Variscan orogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract In the Saxothuringian part of the Vosges (France), a first series of Variscan plutonic rocks (diorites to granites) has been intruded by several younger granites. Rocks of both the older generations have been cross-cut by the late orogenic Kagenfels granite. The averages of the hitherto published mineral ages of the earlier rock generations are 331 and 334 Ma, respectively, whereas Rb-Sr and K-Ar dates around 290 Ma have been reported for the Kagenfels granite. Because of the unlikely large age hiatus, a redetermination of the intrusion age of the Kagenfels granite formation appeared to be irrevocable. The newly obtained mineral ages on the Kagenfels granite (K-Ar and 40Ar/39Ar biotite ages as well as single zircon radiogenic 207Pb/206Pb data: 331 ± 5 Ma) are about 40 Ma older than the previous results. They are interpreted as giving the time of emplacement of the Kagenfels granite during the latest Visćan. The mineral ages of the earlier plutonic rocks in this part of the Variscan Orogeny in all probability are not significantly different from their ages of intrusion. Therefore the age concordance of all three granitoid generations constrains a rather narrow time interval of orogenic magmatism close to the Lower-Upper Carboniferous boundary.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of earth sciences 84 (1995), S. 319-333 
    ISSN: 1437-3262
    Keywords: Andesites ; Plate tectonics ; Great Caucasus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract During the Jurassic the major tectonic units of the Great Caucasus (Bechasyn, Front Range, Main Range and Southern Slope zone) were affected by intensive magmatic activity. Magmatism within the Bechasyn zone, the northernmost unit, which represents the southern part of the Variscan-consolidated Skythian platform is considered here. With the beginning of the Early Jurassic this zone was reactivated by subsidence, accompanied by the deposition of epicontinental shallow water sediments. The Lower Jurassic portion of this sedimentary pile was intruded by numerous sills which display a clear temporal and spatial evolution. The older basic rocks are lower in the profile than the younger, more acidic rocks. A set of 75 samples, representing all exposed sills and their feeder-dikes, was analyzed for major and 21 trace elements. All samples appear more or less affected by alteration under lower greenschist facies conditions. However, these alterations essentially took place on local scales and did not affect the overall chemistry. According to their main element composition the rocks constitute a calc-alkaline series ranging from basaltic—andesitic to rhyolitic. Most of the samples are andesites. Chemically, these andesites closely resemble modern orogenic andesites occurring at convergent plate margins. Altogether, the field evidence and the chemical and mineralogical data obtained show the investigated rocks to be comagmatic and derived from basalt—andesitic initial melts by magmatic fractionation processes. Tholeiitic melts have to be considered as parental magmas, which according to the trace element characteristics of the basalt-andesitic rocks, were generated from an enriched peridotitic mantle source. 87Sr/86Sr isotope ratios and σ18O values confirm the mantle origin of this rock series. The observed compositional evolution can be explained as a result of olivine and clinopyroxene fractionation of the tholeitic melts followed by amphibole and plagioclase separation. 40Ar/39Ar measurements on biotite and plagioclase phenocrysts separated from these rocks vary between 190 and 180 Ma and thereby place the magmatic activity in the late Early Jurassic, in good agreement with the stratigraphic observations. Genetically, the calc-alkaline rocks are related to a subduction zone of the Andean type. Their chemical and isotopic compositions and their age setting corroborate the plate tectonic models for the evolution of the Caucasus orogenic belt during the Jurassic.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1432-0533
    Keywords: Glioblastomas ; Organ culture method ; Autoradiography ; Kinetics ; Growth fraction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five human glioblastomas maintained in an organ culture system were studied by autoradiography to determine, after 8 days in vitro, the growth fraction (GF) of the explants, their total cell cycle time (T C) and cell cycle phase durations (T S,T G1,T G2 andT M), and their potential doubling time (T pot) after pulse-labeling with [3H] TdR for 1 h. These parameters were derived from computer analysis of fraction of labeled mitoses (FLM) curves. The results fell into two groups. In two tumors, the cultures had a GF of 0.25 and 0.23. From the FLM curves were derived aT C of 89 and 83 h, aT S of 16.5 and 9.5 h, and aT G1 of 60 and 61 h.T M was estimated at 0.9 and 0.6 h, andT G2 12h. TheT pot was 12 days. These values approximate those reported for glioblastomas and other human malignancies in vivo. The explants of three other glioblastomas gave different FLM curves: the derivedT S were increased to 36 and 55 h, estimatedT M ranged from 2.4 to 4.5 h, andT G2 ranged from 11 to 20 h.T C andT G1 could not be estimated. In two tumors the GF was reduced to 0.12 and 0.11, with aT pot of respectively 52 and 39 days. These values are comparable to those reported for astrocytomas of intermediate malignancy. In the third tumor, the GF was only 0.014. The reduction in GF and the lengthening of cell cycle components in this group of explants are similar to the kinetic changes reported in some in vivo tumors and three-dimensional in vitro systems that have reached a plateau stage of growth. They are probably related to the greater opportunities for cell-to-cell contacts and the resulting increased differentiation favored by the organ culture technique.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 1319-1321 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The glycoprotein of Reissner's fibre is able to bind norepinephrine, epinephrine and serotonin. Bound amines can be demonstrated at the RF, even after washing with artificial cerebrospinal fluid for some, hours. It is discussed whether it is a function of the RF to remove substances, for instance biogenic amines, from the cerebrospinal fluid.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 44 (1978), S. 151-153 
    ISSN: 1432-0533
    Keywords: Astrocytoma ; Cell membrane ; Microvilli ; Coated vesicles ; Surface morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Surface membrane microprojections and coated vesicles of a well differentiated (Kernohan-Sayre grade I) cerebral fibrillary astrocytoma were compared with those of anaplastic astrocytic (grade IV, glioblastoma) cerebral tumors. Both phenomena increase with increased malignancy. This provides further evidence for membrane alterations with malignant change in human astrocytic cells. It is the first comparison of fibrillary astrocytoma surface phenomena with those of more malignant astrocytic tumors of the cerebrum.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Histochemistry and cell biology 85 (1986), S. 389-394 
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Epidermal growth factor (EGF) is a peptide which stimulates cell mitotic activity and differentiation, has a cytoprotective effect on the gastroduodenal mucosa, and inhibits gastric acid secretion. The immunohistochemical localization of EGF in the Brunner's glands and the submandibular glands is well documented. The localization of EGF in other tissues is still unclarified. In the present study, the immunohistochemical localization of EGF in tissues from rat, man and a 20 week human fetus were investigated. In man and rat, immunoreaction was found in the submandibular glands, the serous glands of the nasal cavity, Brunner's glands of the duodenum, the Paneth cells of the small intestine, and the tubular cells of the kidney. In the fetus EGF was found in the kidney and in the intestinal Paneth cells. Antisera raised against rat submandibular EGF did not recognize EGF in human tissues, whereas antisera against human urinary EGF worked in rat as well as man. EGF was found only in cells with an exocrine function.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...