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
    ISSN: 1420-908X
    Keywords: Histamine ; Oxygen radicals ; PAF ; LECAM-1 ; Calcium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Oxygen derived free radicals are involved in many pathological processes such as postischemic reperfusion injuries, hepatotoxicity of drugs and inflammatory processes. Thereby these oxygen radicals induce lipid peroxidation and perturbation of cellular membranes. The aim of our present study was to determine whether oxygen radicals generated by the xanthine oxidase/hypoxanthine system cause a release of histamine in human blood cell cultures. Stimulation of blood cell cultures with oxygen radicals induced a histamine liberation which was mainly due to calcium independent processes during the first 30 min, whereas then calcium requiring processes took part in the release of histamine. The regulation of the leukocyte selectin LECAM-1 was altered by oxygen radicals whereas histamine, which is known to modulate vascular selectin expression, did not affect the expression of LECAM-1. Our data indicate that oxygen radicals induce a direct calcium independent release of histamine which is due to membrane pertubating processes during the first phase but also induce a specific reaction leading to a further indirect histamine liberation which is probably mediated by PAF.
    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
    Journal of molecular medicine 52 (1974), S. 404-406 
    ISSN: 1432-1440
    Keywords: Glucose metabolism ; postoperative dynamic of insulin secretion ; portal-vein-insulin-concentration in man ; hepatic binding of human endogenous insulin ; Glucosestoffwechsel ; Dynamik der post-operativen Insulinsekretion ; Insulinkonzentrationen im Pfortaderblut des Menschen ; endogener Insulinverbrauch der Leber beim Menschen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In der frühen postoperativen Phase wurde bei neun lebergesunden Patienten die Insulin-Konzentration in der Pfortader vor, während und nach i.v. Glucosestimulation gemeseen. Die in der Pfortader gemessenen Insulinkonzentrationen ergaben einen doppelgipfeligen Kurvenverlauf. Die Differenz der Insulin-Konzentration zwischen Pfortader und Cubitalvene ist unterschiedlich und schwankt zwischen 44 und 83%.
    Notes: Summary In the early postoperative period the insulin concentration of the portal vein was measured by 9 patients, before, during and after intravenous glucose stimulation. The insulin concentrations of the portal vein show a biphasic curve. The inconstant difference of the insulin level in the portal and systemic blood fluctuates between 44–83%.
    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
    Journal of molecular medicine 60 (1982), S. 935-938 
    ISSN: 1432-1440
    Keywords: Plasma histamine ; Portal vein blood ; Hepatic elimination of histamine ; Plasmahistamin ; Pfortaderblut ; Histaminelimination der Leber
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach Bauchoperationen steigt die Histamin-Konzentration in der Pfortader und den peripheren Venen für 3–5 Tage deutlich an. Aus dem gastrointestinalen Gewebe wird in der frühen postoperativen Periode Histamin in größerer Menge in das Pfortaderblut freigesetzt. Beim Menschen eliminiert die gesunde Leber 45–60% des Histamins aus dem Pfortaderblut. Die Histaminextraktion der zirrhotischen Leber erscheint vermindert zu sein.
    Notes: Summary Histamine concentration in the systemic and splanchnic blood increases after major surgical trauma for a period of 3–5 days. The intestinal organs release a larger quantity of histamine into the portal blood during the first postoperative days. The human liver in a healthy state eliminates histamine from the portal vein blood in the range of 45–60%. Histamine elimination by the cirrhotic liver seems to be decreased.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 52 (1974), S. 696-698 
    ISSN: 1432-1440
    Keywords: Histamine ; liver ; portal and hepatic vein plasma histamine ; Histamin ; Leber ; Plasmahistamin in Pfortader und Lebervene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Plasmahistaminkonzentrationen wurden bei 8 Patienten im Blut der Pfortader, der Lebervene, der Femoralarterie und systemvenös fluorimetrisch bestimmt. Der von der Leber eliminierte Histaminanteil, errechnet aus der Differenz des portal einströmenden und des über die Lebervene ausströmenden Plasmahistamins, beträgt bei arterieller Beimischung von 30% im Mittel 63,1±12,8%. Auf die Fähigkeit der Leber durch unterschiedlich große Eliminierung des Histamins den Plasmahistamingehalt zu regulieren wird hingewiesen.
    Notes: Summary Fluorometric estimations of plasma histamine in the blood of the portal vein, hepatic vein, cubital vein and the femoral artery were performed in 8 patients. Concerning the difference of histamine in the portal and the hepatic vein blood, the histamine elimination of the liver comes to 63.1±12.8 per cent. The human liver seems to be important in the regulation of the plasma histamine concentration.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 52 (1974), S. 575-577 
    ISSN: 1432-1440
    Keywords: Insulin secretion in vivo ; oscillation in insulin response curve ; liver extraction of insulin ; glucose metabolism in early postoperative period ; Insulinsekretion in vivo ; Oscillation der Insulinsekretionskurve ; Insulin Leberextraktion ; Glucosestoffwechsel der frühen postoperativen Phase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Insulinkonzentration im Pfortaderblut bei 8 Patienten in der frühen postoperativen Phase zeigt unter konstanter Glucoseinfusion einen vielgipfligen Verlauf. Die Unterschiede zwischen Gipfel und Täler sind signifikant. Lediglich initialer und der am stärksten ausgeprägte sekundäre Gipfel sind auch im Cubitalvenenblut zu beobachten. Die Rolle der Leber als Puffer gegenüber überschüssig sezerniertem Insulin wird diskutiert.
    Notes: Summary The concentration of insulin in the portal venous blood shows in 8 patients in the early postoperative period under constant infusion of glucose a multiphasic course. The differences between the highest and lowest points are significant. Only the initial and the most prominent secondary peak can be followed up in the cubital venous blood. The role of the liver as buffer against the surplus of secreted insulin is discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-1440
    Keywords: Plasma histamine and liver cirrhosis ; histamine elimination by the liver ; endogenous histamine and “hyperdynamic” circulation” ; endogeneous histamine and “hepatogenic” ulcer ; Plasmahistamin und Lebercirrhose ; Plasmahistamineliminierungsraten der Leber ; endogenes Histamin und hyperdynamische ; Zirkulation ; endogenes Histamin und heptogenes Ulkus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Systemvenöse Plasmahistaminkonzentrationen wurden bei 16 Probanden mit laborchemisch und morphologisch unauffälliger Leber, bei 10 Patienten mit Fettleber (Stadium I–II) sowie bei 22 Cirrhosekranken, darunter 7 Trägern einer portocavalen Anastomose vorgenommen. Darüber hinaus bei 11 Normalpersonen und bei 8 Cirrhosekranken mit/ohne porto-cavalem Shunt wurde der Plasmahistamingehalt prähepatisch im Pfortader- und im Leberarterienblut sowie posthepatisch im Lebervenenblut vorgenommen, anschließend wurde der von der Leber eliminierte Histaminanteil rechnerisch ermittelt. Etwa zwei Drittel (67,8±11,4%;n=11) des portal einströmenden Histamins wird beim Menschen von der Leber, vor allem durch Aufnahme und Umsatz, aus dem durchströmenden Plasma eliminiert. Eine cirrhotische Leber ist nur in reduziertem Umfang fähig, Histamin aus dem durchströmenden Plasma zu eliminieren (41,0±15,1%;n=8). Der Plasmahistamingehalt im Systemkreislauf bei Cirrhosekranken (1,2±0,3 ng/ml;n=22) liegt gegenüber Normalpersonen (0,7±0,2 ng/ml;n=16) signifikant höher (p〈0,001). Die dabei zu erwartenden pathophysiologischen Auswirkungen des erhöhten Plasmahistamingehaltes bei der veränderten Hämodynamik bei Lebercirrhose (die sog. hyperdynamische Zirkulation) werden diskutiert. Darüber hinaus wird auf die mögliche pathogenetische Bedeutung des erhöhten Plasmahistamins bei gehäuftem Vorkommen des „hepatogen“ induzierten gastroduodenalen Ulkus bei Lebercirrhose und bei porto-cavalen Shunt-Trägern hingewiesen.
    Notes: Summary Fluorometric estimations of plasma histamine in the peripheral venous blood were performed in a control group of 16 subjects with normal liver values and normal liver biopsy specimen. Two further groups with liver changes were studied: Ten patients with fatty liver (stage I–II) and 22 cases suffering from liver cirrhosis, including 7 patients with portocaval shunt. Additionally, plasma histamine concentrations were determined in the blood of the portal vein, hepatic vein, cubital vein and in the femoral artery of another 11 normal subjects and 8 cirrhotic patients, some of them with portocaval shunt. The elimination of histamine by the liver was calculated. In healthy humans about two thirds (67.8±11.4 per cent;n=11) of the histamine content in the portal vein is eliminated by liver passage. This is due mainly to liver uptake and catabolism of histamine. It could be shown, that the elimination rate (41.0±15.1 per cent,n=8) is diminished in cirrhotic livers. Therefore, the plasma histamine content measured in the peripheral venous blood is significantly higher (p〈0.001) in cirrhotic patients (1.2±0.3 ng/ml;n=22) than in healthy subjects (0.7±0.2 ng/ml;n=16). The expected pathophysiological effects of the elevated plasma histamine levels in liver cirrhosis are discussed with respect to circulatory changes (“hyperdynamic circulation”) and their possible role in the development of “hepatogenic” ulcers of the stomach.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 65 (1987), S. 61-68 
    ISSN: 1432-1440
    Keywords: Septic shock ; Endotoxin ; Eicosanoids ; Prostaglandins ; Thromboxane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An evaluation was made of 106 surgical patients with Gram-negative septic shock, both for clinical criteria as well as the biochemical mediators endotoxin, prostaglandin F2α, prostaglandin I2 (prostacyclin), and thromboxane. These data were correlated to various defined shock phases, functional data of vital organs, and clinical outcome. Patients underwent invasive organ function monitoring and the usual laboratory tests of intensive care. Prostaglandins and thromboxane were measured radioimmunologically, endotoxin by the limulus amebocyte lysate test. Endotoxin proved to be a more accurate predictor of severe sepsis than did positive blood cultures. Endotoxin as well as prostaglandins and thromboxane are predominantly released in early shock phases, appearing in plasma concentrations, which correlate with the severity of organ failure. Sepsis-induced respiratory failure coincides with a deterioration of pulmonary prostaglandin inactivation, which contributes to the release mechanism. High systemic prostacyclin activity benefits the patients' organ functions and clinical outcomes, while a predominance of thromboxane seems to effect the opposite. Transpulmonary-thromboxane gradients correlate significantly with pulmonary hypertension in the early phases of septic shock.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 64 (1986), S. 1186-1191 
    ISSN: 1432-1440
    Keywords: Acute pancreatitis ; Serum elastase 1 ; Diagnosis ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Serum elastase 1 was determined in the serum of 38 patients with acute pancreatitis, using specific radioimmunoassay technique. Serving as controls were 36 healthy people, 33 patients with chronic pancreatitis, 49 patients with various GI-tract diseases, and 6 patients with pancreatic carcinoma. Sensitivity of elastase 1 for the diagnosis “acute pancreatitis” was 97% after admission to the hospital and 100% within 48 h after onset of acute pancreatitis. The determination of elastase 1 is clearly superior to that of trypsin, pancreatic lipase, or pancreatic amylase, if diagnosis has to be made more than 48 h after the onset of the disease. The specificity is restricted, because there are some cases with chronic pancreatitis and GI-diseases with raised values. There is no possibility to estimate the severity of acute pancreatitis by measuring serum elastase 1.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 53 (1975), S. 861-865 
    ISSN: 1432-1440
    Keywords: Postoperative glucose assimilation ; insulin secretion in vivo ; insulin concentration in portal venous blood ; dynamics of insulin secretion ; oscillation in insulin response ; Postoperative Glucoseverwertung ; Insulinsekretion in vivo ; Insulinkonzentration im Pfortaderblut ; Dynamik der Insulinsekretion ; Oscillation der Insulinsekretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Insulinkonzentrationen im peripheren Venenblut und Pfortaderblut wurden während 20 standardisierter Glucoseinfusionstests bei 18 Patienten nach intraabdominellen Operationen gemessen. Folgende Schlußfolgerungen werden gezogen: 1. Trotz vergleichbarer präoperativer Ausgangssituation und Traumatisierung durch die Operation ist die Reaktivität des Inselzellapparates auf eine konstante Hyperglykämie und entsprechend die Glucoseverwertung individuell sehr verschieden. 2. Die Messungen der Insulinkonzentration im Pfortaderblut des Menschen ergeben eine signifikante Korrelation zwischen dem Profil der Insulinkonzentrationskurve und demk-Wert; die Meßergebnisse der Insulinkonzentration im peripher-venösen Blut zeigen trotz großerk-Wert-Unterschiede keine eindeutigen Beziehungen. 3. Bei den Patienten mit einer pathologischen Glucoseverwertung ist weniger die Geschwindigkeit der Insulinsekretion als die der Insulinregression aus dem Pfortaderblut verzögert. 4. Bei den Patienten mit einer normalen Glucoseverwertung zeigt die Insulinkonzentrationskurve im Pfortaderblut in den ersten 30 min einen oscillierenden Verlauf. Diese erstmals beim Menschen beobachteten Oscillationen weisen auf eine insulingesteuerte Rückkoppelung der Insulinsekretion hin.
    Notes: Summary Insulin concentrations in peripheral venous blood and portal venous blood were measured in 18 patients after intraabdominal operations during 20 standardised glucose-infusion-tests (GIT). The conclusion is as follows: 1. In spite of similar preoperative situations and operative traumatisation the islets reactivity to a constant hyperglycemia and the glucose assimilation is individually very different. 2. Measurements of insulin concentrations in the portal venous blood in man show a significant correlation between the profile of the insulin concentration curve and thek-value; the measurement of the insulin concentrations in peripheral venous blood fails to demonstrate a significant difference. 3. In patients with a pathologic glucose assimilation it is not the insulin secretion that is delayed but the insulin regression (disappearance rate) in portal venous blood. 4. In patients with a normal glucose assimilation the insulin concentration curve in portal venous blood shows an oscillating course during the first 30 min. These oscillations registered for the first time in humans indicate an insulin-induced feedback mechanism of insulin secretion.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 102-102 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    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...