ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
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
  • catecholamines  (10)
  • Springer  (10)
  • American Physical Society
  • International Union of Crystallography (IUCr)
  • MDPI Publishing
  • 1975-1979  (10)
  • 1965-1969
  • 1935-1939
  • 1975  (10)
Collection
Keywords
Publisher
  • Springer  (10)
  • American Physical Society
  • International Union of Crystallography (IUCr)
  • MDPI Publishing
Years
  • 1975-1979  (10)
  • 1965-1969
  • 1935-1939
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effect of lithium on the catecholamine concentration in the rabbit and rat brain (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 151-153 
    Details
    ISSN: 1573-8221
    Keywords: lithium chloride ; catecholamines ; brain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A single injection (200 mg/kg, intraperitoneally) or a course of injections (100 mg/kg subcutaneously, daily for 10 days) of lithium chloride given to rats had no significant effect on the content of catecholamines and dihydroxyphenylalanine in the brain stem 1, and 4 h after the injections. In experiments on rabbits the compound (100 mg/kg, intravenously) increased the noradrenalin concentration in the thalamus, hypothalamus, reticular formation, and caudate nucleus. An increase in the dopamine content in the caudate nucleus was accompanied by a simultaneous decrease in its concentration in the thalamus, hypothalamus, reticular formation, amygdala, and hippocampus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808863
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Distribution of catecholamines in the median eminence of rats after adrenalectomy (1975)
    Springer
    Bulletin of experimental biology and medicine 80 (1975), S. 1107-1110 
    Details
    ISSN: 1573-8221
    Keywords: eminentia medialis ; adrenalectomy ; catecholamines ; peptidergic fibers ; arcuate nucleus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The distribution of adrenergic and peptidergic fibers in the eminentia medialis of the tuber cinereum of rats was studied 3 weeks after bilateral adrenalectomy. An increase in the intensity of fluorescence in the outer zone of the eminentia medialis and an increase in the number of strongly fluorescent bodies of the neurons in the arcuate nucleus were found. Numerous nerve fibers with bright green fluorescence could be seen in the inner zone. In the outer zone, many peptidergic nerve fibers appeared. Differences in the response to adrenalectomy in the rostral, middle, and caudal zones of the eminentia medialis are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799905
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of adrenalin, noradrenalin, dopamine, dopa, and phenylalanine on peroxidation of lipids in liver mitochondrial membranes (1975)
    Springer
    Bulletin of experimental biology and medicine 80 (1975), S. 1428-1431 
    Details
    ISSN: 1573-8221
    Keywords: catecholamines ; peroxidation of lipids ; membranes ; antioxidants ; chemical kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The effect of catecholamines on chain peroxidation of lipids in the liver mitochondrial membranes in the presence of Fe++ ions was studied by a very weak chemiluminescence method. Catecholamines between concentrations of 10−6 and 10−4 M were shown to inhibit this process. By a mathematical investigation of the kinetics of the process constants of antioxidative activity of the catecholamines were calculated, as follows: for noradrenalin 1.13·104 M−1, adrenalin 1.04·104 M−1, dopamine 7.6·103 M−1, and dopa 5·103 M−1. The antioxidative action of the catecholamines was linked with the presence of a free phenol group in their molecule. The mechanism of inhibition consists of interaction between catecholamines and free radicals leading the oxidation chains. It is postulated that the antioxidative action of catecholamines may have an important role in the regulation of the permeability of biological membranes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00842628
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Neuronal composition of the intramural ganglia of the gastro-intestinal tract (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 330-333 
    Details
    ISSN: 1573-8221
    Keywords: gastro-intestinal tract ; catecholamines ; intramural nerve cells ; luminescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The neuronal composition of the intramural plexuses of the gastro-intestinal tract in cats was studied by luminescence microscopy. The intramural ganglia were found to contain three populations of neurons. The neurons of the first population showed no specific catecholamine fluorescence. Those of the second population had fluorescence of the perikaryon and processes. The perikarya of the third neuron population were not fluorescent but adrenergic synapses were seen on their surface. Intraperitoneal injection of exogenous noradrenalin (1 mg) led to an increase in the number of neurons of the third population with specific fluorescence. On this basis it was concluded that as well as parasympathetic intramural neurons the intramural ganglia of the gastro-intestinal tract also contain sympathetic cells, most of which exhibit specific fluorescence only after their mediator content has been artificially increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00804232
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Effect of methylxanthines (theophylline, theobromine, caffeine) and catecholamines on nicotinamide coenzyme content in the rat myocardium (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 418-420 
    Details
    ISSN: 1573-8221
    Keywords: catecholamines ; adrenomimetics ; methylxanthines ; nicotinamide coenzymes ; rat myocardium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In experiments on rats, after intraperitoneal injection of theophylline the content of oxidized forms of pyridine nucleotides (NAD+NADP) was reduced by 19.4%, the level of the reduced forms (NAD·H2+NADP·H2) showed a tendency to decrease, and the total content of nicotinamide coenzymes was significantly reduced. After administration of caffeine the content of NAD+NADP and the total pyridine nucleotides showed a tendency to decrease. Theobromine had no significant effect on these parameters. The action of catecholamines and methylxanthines was compared. Isoproternol (exciting β-adrenergic receptors) lowered the NAD+NADP content, but adrenalin (25 μg/kg) increased the content of both oxidized (by 24%) and reduced (48%) forms of pyridine nucleotides. An increase in the dose of adrenalin (1000 μg/kg) led to a decrease in the level of oxidized forms (by 22.2%) and of the total nicotinamide coenzymes (by 18%).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00832714
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Mechanisms of disturbance of catecholamine synthesis in the adrenals of physically fatigued rats (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 508-510 
    Details
    ISSN: 1573-8221
    Keywords: adrenals ; catecholamines ; enzymes of synthesis ; physical fatigue
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The ability of the adrenals to synthesize catecholamines in the presence of various substrates was investigated in vitro. Experiments were carried out on rats under normal conditions and after swimming for 8 h. In the physically fatigued animals the conversion of noradrenalin, DOPA, and tyrosine, added in vitro, into catecholamines was inhibited, on the basis of which depression of the activity of phenylethanolamine-N-methyl-transferase, dopa decarboxylase and, possibly, tyrosine hydroxylase was postulated. After the end of swimming, and in the presence of L-tyrosine as substrate, noradrenalin synthesis was activated first (on the second day), and this was followed by gradual restoration (on the 7th day) of normal adrenalin synthesis. In rats trained for two months, in response to swimming for 8 h the degree of depression of catecholamine synthesis in the adrenals was much smaller than in untrained rats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00800486
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Catecholamine luminescence reaction in neurons of the spinal sensory ganglion (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 582-584 
    Details
    ISSN: 1573-8221
    Keywords: neurons of spinal ganglia ; catecholamines ; adrenergic nerve fibers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The spinal ganglia of 45 cats were studied by the method of Falck and Hillarp in Krokhina's modification, and parallel investigations were made by Nissl and Unna's methods, staining for lipofuscin, and by the Masson-Fontana method for serotonin. Two types of neurons were discovered: neurons of one type had yellowish-white granules in the region of the axon hillock and speckled yellowish granules and diffuse greenish luminescence in the perikaryon, while those of the second type had orange granules, gathered into small clumps all over the region of the perikaryon. Neurons of both types were surrounded by single adrenergic nerve fibers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00800510
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Role of catecholamines in efferent regulation of taste receptors (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 481-483 
    Details
    ISSN: 1573-8221
    Keywords: lingual papillae ; catecholamines ; sympathetic system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The action of efferent stimulation on unit activity of the taste receptors of the frog tongue was studied. A deficiency of catecholamines following reserpine administration or perfusion of the lingual vessels with adrenoblocking agents (inderal, dibenamine) prevents centrifugal inhibition, whereas perfusion with an adrenomimetic (adrenalin) potentiates this effect. These effects of adrenergic substances were also observed in animals after bilateral extirpation of the first ganglion of the sympathetic chain. It is concluded that catecholamines present in the papillae are essential for central inhibitory effects on activity of the taste receptor apparatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00800478
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Catecholamine content and electrolyte balance in the myocardium of rabbits poisoned with 2,4-dinitrophenol (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 633-635 
    Details
    ISSN: 1573-8221
    Keywords: 2,4-dinitrophenol ; energy deficit ; myocardium ; catecholamines ; electrolyte metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract After intravenous injection of 2,4-dinitrophenol in a dose of 10 mg/kg, destruction of the mitochondria in some myocardial muscle cells was accompanied by hyperfunction of these organelles in others. The noradrenalin content in the heart tissue was increased, but the potassium level was reduced. With a more severe energy deficit (20 and 30–40 mg/kg 2,4-dinitrophenol) signs of destruction predominated in the mitochondria of the myocardial cells, the noradrenalin concentration in the heart tissue fell, but the potassium level in the plasma and myocardium rose. The adrenalin concentration in the heart and adrenal tissue fell. A severe energy deficit gave rise to a syndrome of hyperkaliemia linked with discharge of potassium into the blood stream from the tissue depots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00786415
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Effect of octadine and bretylium on the content of adenine nucleotides in the vascular wall (1975)
    Springer
    Bulletin of experimental biology and medicine 79 (1975), S. 281-283 
    Details
    ISSN: 1573-8221
    Keywords: adenine nucleotides ; blood vessel wall ; catecholamines ; sympatholytics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Experiments on rabbits showed that a single injection of octadine (guanethidine) (10 mg/kg) 3 h, or of bretylium (10 mg/kg) 1 h, before the investigation caused no change in the content of adenine nucleotides or inorganic phosphorus in the wall of the aorta. A decrease in the catecholamine level was observed after administration of octadine. Bretylium, whether injected once or repeatedly, caused no change in the tissue catecholamine concentration. Repeated injection of these preparations in the same doses daily for 10 days caused an increase in the AMP level but no significant change in the concentrations of the other adenine nucleotides or of inorganic phosphorus. The increase in the AMP level could be one possible mechanism of the pharmaco-mechanical relaxation of the smooth muscle of the vessel wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00804215
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...