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Featured researches published by F. Kunz.


Journal of Neurology | 1972

Phospholipids in human cerebrospinal fluid

F. Kunz; E. Rumpl

SummaryPhospholipid fractions in cerebrospinal fluid of normal persons were examined by separation with thin layer chromatography. 100 ml of cerebrospinal fluid were found to contain 22±4 μg phospholipid phosphorus, on the average consisting of 12% lysolecithin, 20% sphingomyelin, 42% lecithin, 2% lysocephalin, 3% phosphatidylinositol, 2% phosphatidylserine, 9% phosphatidylethanolamine. 4% of the total phospholipids remained at the origin of the chromatograms, the rest was recovered in yet unidentified fractions.ZusammenfassungPhospholipidfraktionen wurden im Liquor cerebrospinalis von Normalpersonen durch Auftrennen mit Dünnschichtchromatographie bestimmt. In 100 ml Liquor wurden 22±4 μg Phospholipidphosphor gefunden, davon 12% Lysolecithin, 20% Sphingomyelin, 42% Lecithin, 2% Lysokephalin, 3% Phosphatidylinositol, 2% Phosphatidylserin und 9% Phosphatidyläthanolamin. 4% wurden an der Auftragsstelle gefunden, der Rest in nicht identifizierten Fraktionen. Mit der angewandten Methode war es also möglich, mehr Phospholipidfraktionen als bisher angegeben aufzutrennen.


Atherosclerosis | 1976

Increased complexing of plasmatic lipids with fibrins in hyperlipoproteinaemias

F. Kunz; Helmut Hörtnagl; Dietmar Egg; H.-J. Lisch

Abstract Plasma was brought to coagulation by different reagents under differing conditions. The clots were then squeezed out and washed under standardized conditions and the lipid content of the resulting fibrins and the corresponding plasmas were analyzed. In hyperlipoproteinaemic patients the amount of plasmatic lipids complexed with fibrins was significantly greater than in normal subjects; and the percentage was greater in hypertriglyceridaemic patients. Increased amounts of lipids complexed with fibrins might inhibit fibrinolytic enzymes from reaching their substrate and therefore be partly responsible for the increased tendency to atherosclerosis and to thrombotic complications in hyperlipoproteinaemia. In normal subjects there was a positive correlation between plasma and fibrin triglycerides. No other correlations between lipid and coagulation parameters were observed.


Annals of Hematology | 1974

Studies on hypo-and hypercoagulability II. Coagulation and fibrin analyses in severe infectious and toxic conditions

F. Kunz; Helmut Hörtnagl; Gunnar Kroesen; Wilfried Schennach; Dietmar Egg; E. Rumpl; Rudolf Aschauer; Fritz Holzknecht

SummaryPlasma phospholipids were elevated in patients with severe infections with renal complications (except for pyelonephritis) without shock in comparison with normals and with patients with severe infectionswithout renal complications. In contrast, in patients with toxic conditions with and without shock, total phospholipids were decreased. The percentages of phosphatidyl-ethanolamine and of lecithin were increased and those of lysolecithin decreased in all patient groups.By incubation of citrate plasma, partial thromboplastin or thromboplastin and Ca++ fibrins were produced, washed out, homogenized and phospholipids were estimated. In the patient groups with infections with renal complications and with peritoneal toxic conditions total phospholipids in the fibrins produced with partial thromboplastin reagent were significantly increased both in comparison to normals and to the corresponding amounts of reagent. Phospholipids in thromboplastinproduced fibrins were significantly elevated only in the patients with infections with renal complications.The results suport the view that plasma phospholipids-and herewith lipoproteins-are not simply trapped by the fibrin network, but play a role in the coagulation process, particularly under pathological conditions:1)In the patient groups with the most severe conditions the amount of total phospholipids in the PTT*-produced fibrins was significantly augmented in comparison to normals and the corresponding amount of reagent.2)Total phospholipids in the PTT-produced fibrins were independent of the amount of phospholipids in the plasma.3)They were also independent of fibrinogen or any of the coagulation factors.4)There were significant differences in the complexing of phospholipids between PTT-and thromboplastin-produced fibrins within the same groups. Routine coagulation parameters (fibrinogen, one-stage prothrombin time, partial thromboplastin time, platelets, thrombelastography, factors II, V, VII, VIII, IX, X) varied greatly. PT* and factor II and VII were significantly decreased in patients with toxic conditions. Fibrinogen was augmented, but the platelet count decreased in patients with infections with renal complications. Of all parameters tested, the increases of percentages of phosphatidylethanolamine in plasma and of total phospholipids in PTT-produced fibrins were most closely connected with clinical signs of hypercoagulability (i.e. of intravascular coagulation without excessive consumption of clotting factors leading to bleeding).ZusammenfassungPlasmaphospholipide waren bei Patienten mit schweren Infekten mit renalen Komplikationen (mit Ausnahme der Pyelonephritis) ohne Schock signifikant im Vergleich mit unkomplizierten Infekten und mit Normalen vermehrt. Im Gegensatz dazu waren sie bei infektiös-toxischen Zustandsbildern deutlich erniedrigt. Die Prozentwerte von Phosphatidyläthanolamin und von Lecithin waren bei allen Patientengruppen signifikant vermehrt, während die von Lysolecithin vermindert waren.Durch inkubation von Zitratplasma, partiellem Thromboplastin oder Thromboplastin und Ca++ wurden Fibrine erzeugt, ausgewaschen, homogenisiert und die Phospholipide im Homogenat bestimmt. In allen Patientengruppen mit Ausnahme der unkomplizierten schweren Infekte waren die in den Fibrinen gefundenen Phospholipide beträchtlich im Vergleich mit Normalen und mit der entsprechenden Menge Reagens vermehrt. Phospholipide in mit Thromboplastin erzeugten Fibrinen waren nur bei schweren Infekten mit renalen Komplikationen erhöht.Die Ergebnisse unterstützen die Ansicht, daß die Plasmaphospholipide — und damit Lipoproteine — sich nicht einfach im Fibrinnetzwerk verfangen sondern eine eigenständige Rolle im Gerinnungsprozeß, besonders unter pathologischen Bedingungen spielen, und zwar aus folgenden Gründen.1.In den Patientengruppen mit den schwersten Zustandsbildern waren die Gesamtphospholipide in den mit PTT-Reagens produzierten Fibrinen signifikant im Vergleich zu Normalen und zur entsprechenden Menge Reagens vermehrt.2.Die Gesamtphospholipide in den PTT-produzierten Fibrinen waren unabhängig von den Gesamtphospholipiden.3.Sie waren auch unabhängig von Fibrinogen oder einem anderen der geprüften Gerinnungsfaktoren im Plasma.4.In der Bindung der Phospholipide bestanden signifikante Unterschiede zwischen PTT-und Thromboplastin-produzierten Fibrinen innerhalb der gleichen Gruppen. Die Routinegerinnungsparameter zeigten große Schwankungen. PT und die Faktoren II und VII waren signifikant bei Patienten mit infektiös-toxischen Zustandsbildern vermehrt. In der Gruppe der Infektionen mit renalen Komplikationen war Fibrinogen vermehrt, jedoch die Thrombozyten vermindert.Von allen geprüften Parametern waren die Vermehrung der Prozentwerte von Phosphatidyläthanolamin im Plasma und der Gesamtphospholipide in den PTT-produzierten Fibrinen am ausgeprägtesten mit klinischen Zeichen von Hyperkoagulabilität (intravasale Fibrinbildung ohne massiven, zu Blutungen führenden Verbrauch von Gerinnungsfaktoren) verbunden.


Journal of Molecular Medicine | 1972

The role of phospholipids in haemophilia A.

F. Kunz; E. Rumpl; Fritz Holzknecht

SummaryTotal phospholipids and the percentage of phosphatidylethanolamine-a phospholipid which is claimed to have procoagulant properties-were found to be lower in the plasma of untreated patients with haemophilia A than both in treated patients and in normal subjects.Comparisons of the phospholipid composition of plasma, of partial thromboplastin preparations and of the fibrins produced with these preparations suggest that not only phospholipids of these platelet substitutes, but also of plasma are incorporated into the fibrin and may therefore play a role in the coagulation process.In haemophilia A, there appears to be a diminished participation of plasmatic phospholipids in the intrinsic coagulation process, as the fibrins of haemophiliacs contained significantly lower levels of lecithin than those of normals. This could partly be caused by lower levels of factor VIII.ZusammenfassungDie Gesamtphospholipide und der prozentuelle Anteil von Phosphatidyläthanolamin, einem Phospholipid mit gerinnungsfördernden Eigenschaften, waren bei unbehandelten Hämophilen niedriger als bei behandelten und als bei Normalen.Vergleiche der Phospholipidzusammensetzung von Partialthromboplastinreagentien und von mit diesen gebildeten Fibrinen weisen darauf hin, daß nicht nur Phospholipide dieser Thrombocytensubstitute, sondern auch des Plasmas in Fibrin eingebaut werden. Die Fibrine von Hämophilen enthielten weniger Lecithin als die von Normalen, ein Hinweis für eine verminderte Beteiligung der Plasmaphospholipide an der Gerinnung bei Hämophilen, wohl teilweise bedingt durch die niedrigeren Spiegel von Faktor VIII.


Atherosclerosis | 1983

Clot lipids in ischaemic heart disease.

F. Kunz; W.D. Zwierzina; Helmut Hörtnagl

Total phospholipids (PL) and neutral lipid classes of plasma, of HDL and of clots produced from platelet-rich plasma and also the main coagulation parameters were determined in normal subjects and in patients with acute myocardial infarction (AMI) and with angiographically diagnosed coronary artery disease (CAD). The main plasma and HDL lipid fractions and the coagulation parameters did not differ significantly between the groups. In contrast, in both groups with ischaemic heart disease triglycerides (TG) bound to clots were selectively elevated precluding accidental trapping of lipoproteins in the fibrin network and suggesting an increased binding of TG-rich lipoproteins to clots. These changes in the quantity and quality of platelet-rich clots, resembling platelet-rich thrombi in vivo, might not only increase the volume of the clots, but also inhibit fibrinolytic enzymes from reaching their substrate. This might be significant in the pathogenesis of ischaemic heart disease.


Annals of Hematology | 1974

Studies on hypo- and hypercoagulability I. Evidence for the occurence of “incomplete” consumption coagulopathy

F. Kunz; Helmut Hörtnagl; Gunnar Kroesen; E. Rumpl; Fritz Holzknecht

SummaryIn patients with consumption coagulopathy (CCO) with and without mass transfusions, in patients who had received mass transfusions and in normal persons coagulation studies were carried out and phospholipids were examined in plasmata and fibrins produced under standardized conditions. In fibrins of all groups the percentage of lecithin was significantly increased indicating a participation of plasmatic phospholipids. Phospholipids in fibrins produced with thromboplastin were decreased in patients with CCO compared to normals. Phospholipids of fibrins made with partial thromboplastins were, however, increased in the group with incomplete CCO in comparison with all other groups and with the corresponding amount of reagent.In evaluating the parameters examined statistically we found it justified to establish a separate group — incomplete CCO — for the following reasons: In incomplete CCO fibrinogen and factor IX were significantly higher than in the other CCO-groups, whereas factor X was significantly lower. Total plasma phospholipids were significantly elevated compared to the other CCO-groups. Absolute amounts and percentages of phosphatidylethanolamine were 2 to 3 times higher than in normals or in the other CCO groups: In the fibrins produced with partial thromboplastin reagent total phospholipids were significantly higher than in all other groups and also in the reagent.ZusammenfassungBei Patienten mit Verbrauchskoagulopathie (VK) mit und ohne Massentransfusionen, bei Patienten, die Massentransfusionen erhalten hatten sowie bei Normalen wurden Gerinnungsuntersuchungen durchgeführt und die Phospholipide (PL) im Plasma und in unter standardisierten Bedingungen erzeugten Fibrinen untersucht. Die prozentuellen Anteile von Lezithin waren in Fibrinen aller Gruppen erhöht, was auf eine Beteiligung plasmatischer PL bei der Fibrinbildung hinweist. PL in mit Thromboplastin erzeugten Fibrinen waren bei Patienten mit VK im Vergleich zu Normalen vermindert. Die PL der mit partiellem Thromboplastin erzeugten Fibrine waren jedoch bei Patienten mit inkompletter VK deutlich im Vergleich zu Normalen und zu den anderen Patienten mit VK sowie mit der entsprechenden Menge Reagens erhöht.Bei der statistischen Auswertung der Daten fanden wir es berechtigt, eine eigene Gruppe — inkomplette VK — zu bilden, und zwar aus den folgenden Gründen: Bei inkompletter VK waren Fibrinogen und Faktor IX signifikant höher als bei den anderen VK, während Faktor X signifikant niedriger war. Im Plasma waren die Gesamtphospholipide sowie die Absolut- und Relativwerte von Phosphatidyl-äthanolamin wesentlich höher als bei den anderen VK.: In den mit partiellem Thromboplastinreagens erzeugten Fibrinen waren die PL signifikant höher als bei Normalen, als bei den anderen Patienten mit VK und als in der entsprechenden Menge Reagens.


Annals of Hematology | 1983

Studies on a Family with the Factor VII Defect

W. D. Zwierzina; F. Kunz; J. Glatzl

SummaryInvestigations in a family with an isolated factor VII deficiency are reported. In one of the propositi VII Ag was reduced, in all other family members VII Ag was in the low normal range. Other investigators have observed various activation patterns of factor VII in four deficient families which were tested with thromboplastins from different sources. In conatrast to most of these earlier studies the degree of activation with different thromboplastins was very similar regardless which thromboplastin was tested. These results confirm the heterogeneity of the factor VII defect.Platelet aggregation which was tested in one of the propositit with ADP, adrenaline, and collagen was found to be normal.No cold activation of factor VII was observed.


Annals of Hematology | 1970

The significance of plasma phospholipids in zieve syndrome

F. Kunz; W. Stummvoll


Journal of Neurology | 1975

The pattern of phospholipids during the course of delirium tremens

E. Rumpl; F. Kunz


Journal of Neurology | 1973

Kurze Mitteilungen / Short Communications Phospholipids of the Cerebrospinal Fluid in the Course of Subacute Sclerosing Leukoencephalitis

E. Rumpl; F. Kunz; R. Pieber

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E. Rumpl

University of Innsbruck

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Dietmar Egg

University of Innsbruck

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H.-J. Lisch

University of Innsbruck

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J. Glatzl

University of Innsbruck

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W. Stummvoll

University of Innsbruck

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