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
    Springer
    Diabetologia 20 (1981), S. 118-122 
    ISSN: 1432-0428
    Keywords: Non-insulin-dependent diabetes ; insulin treatment ; sulphonylurea treatment ; triglycerides ; VLDL ; IDL ; LDL ; HDL fractions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to study the lipoprotein pattern in diabetes mellitus, plasma lipoproteins were isolated by rate zonal centrifugation in 12 control subjects (median fasting blood glucose level: 80 mg/dl (range: 74–86)), 14 diabetic patients treated by diet alone 104 mg/dl (76–153), 27 patients treated by diet plus insulin (180 mg/dl (106–404)), and 32 patients treated by diet plus sulphonylurea [178 mg/dl (103–361)]. No significant differences of median relative body weight existed between the four groups. Neither the diabetic group on diet alone nor the insulin-treated group differed significantly from control subjects with respect to lipid and lipoprotein concentrations. Diabetics treated with diet plus sulphonylurea, however, differed significantly from the control group with regard to the following parameters (median and range); plasma triglycerides (210 [75–620) mg/dl; p〈0.01)] and intermediate density lipoproteins (65 (10–338) mg/dl; p〈0.05)) were higher; low density lipoproteins (236 (82–418) mg/ dl; p〈0.05)) and high density lipoproteins2 (HDL2) [51 (12–121) mg/dl; p〈0.01)] concentrations were lower. When data from all 85 studied individuals were analysed together, significant positive correlations were observed between fasting blood glucose and plasma triglyceride concentration (r = 0.28, p〈0.01), and between fasting blood glucose and plasma very low density lipoproteins (VLDL) (r = 0.23, p〈0.05). A negative correlation was found between blood glucose and plasma HDL2 (r = -0.29, p〈0.01). In addition, VLDL correlated negatively with HDL2 (r = -0.89, p〈0.001) but not with plasma HDL3 concentration. It is concluded that the deranged lipoprotein metabolism in diabetes mellitus may be better controlled by insulin than by sulphonylureas.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-0428
    Keywords: Calcium ; EDTA ; glucose tolerance ; insulin ; uraemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of calcium infusion on the intravenous glucose tolerance was tested in hypocalcaemic patients suffering from renal insufficiency. It was shown that the delayed glucose disappearance rate in uraemics could be improved (p 〈 0.005) by the infusion of calcium gluconolactobionate despite the fact that the serum concentrations of potassium, urea nitrogen, and the blood pH were not altered. The basal insulin concentration was significantly depressed by the calcium infusion (p 〈 0.02). The serum calcium concentration was significantly correlated to the glucose assimilation coefficient in the uraemic patients (p 〈 0.01). — 3 hypocalcaemic patients without renal failure had a normal glucose tolerance and a normalization of the serum calcium concentration had no discernable effect. — A slight but significant decrease of the serum calcium concentration (p 〈 0.01) by EDTA-Na2 in normocalcaemic patients did not change the intravenous glucose tolerance. — It is concluded that hypocalcaemia may be one of the causes for the abnormal glucose tolerance in chronic renal failure.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-0428
    Keywords: Key words ; Glucose ; fructose ; insulin ; isolated fat cells ; re-esterification of free fatty acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In isolated human fat cells of the greater omentum and the mammary gland, the effect of glucose, fructose, and/or insulin was tested on the re-esterification rate of FFA measured by the balance method. It could be shown that in the absence of glucose no re-esterification activity was demonstrable. Glucose alone or fructose alone stimulated the re-esterification of FFA dose-dependently in isolated fat cells of the greater omentum, and to a minor degree in fat cells of the mammary gland. Insulin had no effect on the re-esterification rate of FFA in the presence or absence of glucose or fructose, whereas it significantly stimulated the incorporation of glucose-C into CO2 and lipids. It is concluded that the re-esterification of FFA in human adipose tissue, at least in vitro, is mainly controlled by glucose without need for insulin.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-1440
    Keywords: Intravenous fat tolerance test ; High density lipoproteins ; Hypertriglyceridaemia ; Intravenöser Fettoleranztest ; High-density-lipoproteins ; Hypertriglyzeridämie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 13 Normo- und 34 Hypertriglyzeridämikern wurden die Beziehungen zwischen den Plasmakonzentrationen von High-density-lipoprotein(HDL)-Cholesterin, Very-low-density(VLDL)-Triglyzeriden, Low-density-Lipoprotein(LDL)-Cholesterin und der fraktionellen Verschwinderate (K2) einer intravenös applizierten Fettemulsion (Intralipid®) untersucht. Für die Gruppe der Normal-personen und für die Gruppe der Hypertriglyzeridämiker bestand eine jeweils hochsignifikante Korrelation (p〈0,001) zwischen der Plasmakonzentration von HDL-Cholesterin und dem K2-Wert. Zwischen der Plasmakonzentration der VLDL-Triglyzeride bzw. des LDL-Cholesterins und dem K2-Wert ergaben sich für beide Gruppen keine statistisch gesicherten Beziehungen. Auf Grund dieser Befunde dürften die HDL wesentlich am Abtrasport der Plasmatriglyzeride beteiligt sein.
    Notes: Summary The relationship between the plasma concentration of high-density-lipoprotein(HDL)-cholesterol, very-low-density-lipoprotein(VLDL)-triglycerides, and low-density-lipoprotein(LDL)-cholesterol and the fractional removal rate (K2) of an intravenously administered fat emulsion (Intralipid®) was investigated in 13 normo- and 34 hypertriglyceridaemics. A highly significant correlation (p〈0,001) between the plasma concentration of HDL-cholesterol and the fractional removal rate of exogenous triglycerides was found for both groups. No significant relationship existed between the concentration of VLDL-triglycerides and of LDL-cholesterol and the removal rate of exogenous triglycerides. These observations suggest a major role of HDL in the removal of plasma triglycerides.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1440
    Keywords: Lipoproteidlipase ; Lipoproteide ; Hyperlipoproteinämie Typ V ; Lipoprotein lipase ; Lipoproteins ; Type V Hyperlipoproteinemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The effects of the main lipoprotein density classes on the human adipose tissue lipoprotein lipase activity were studied. A dose-dependent stimulation of lipoprotein lipase activity was obtained for HDL and, to a lesser extent, for VLDL on a constant weight basis. LDL exerted virtually no effect. At higher concentrations, HDL as well as VLDL inhibited the stimulated lipolytic activity. In type V hyperlipoproteinemia, the stimulating effect of VLDL and of HDL was significantly lower, whereas the inhibiting action of HDL was markedly increased.
    Notes: Zusammenfassung Die Effekte der einzelnen Lipoproteidfraktionen des Plasmas auf die Aktivität der Lipoproteidlipase des menschlichen Fettgewebes wurden untersucht. HDL (high density lipoproteins) und, in geringerem Ausmaß, VLDL (very low density lipoproteins) bewirkten eine dosisabhängige Stimulierung der Aktivität der Lipoproteidlipase. LDL (low density lipoproteins) übten praktisch keinen Effekt aus. In höheren Konzentrationen hemmten sowohl HDL als auch VLDL die stimulierte lipolytische Aktivität. Bei Patienten mit Hyperlipoproteinämie Typ V war der stimulierende Effekt der VLDL und HDL viel geringer, die Hemmwirkung der HDL jedoch deutlich stärker ausgeprägt.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-1440
    Keywords: Noninsulin-dependent diabetics ; Insulin treatment ; Sulfonylurea treatment ; High-density lipoproteins2 ; Postheparin-lipolytic activity ; Insulinunabhängiger Diabetes ; Insulintherapie ; Sulphonylharnstofftherapie ; High-density-lipoproteins2 ; Post-heparin-lipolytische Aktivität
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Wirkung der Behandlungsart des Diabetes auf die Lipide und Lipoproteine und auf die post-heparin-lipolytische Aktivität (PHLA) im Plasma von 26 insulinunabhängigen Diabetikern wurde untersucht. Die Patienten waren bisher mit einer maximal effektiven Dosis von Glibenclamid behandelt worden. Sie wurden in 2 randomisierte Gruppen unterteilt: In Gruppe I wurde Glibenclamid durch ein Insulindepotpräparat ersetzt. Insulin wurde einmal täglich verabreicht und die Dosis solange gesteigert, bis eine zufriedenstellende Einstellung erreicht war. In Gruppe II wurde Glibenclamid durch Placebo ersetzt. Zum Zeitpunkt der Wochen 0, 1, 3, 7 und 12 nach Umstellung der Therapie wurden folgende Parameter bestimmt: Blutglukose, die Plasmakonzentrationen von Cholesterin, Triglyzeriden, Phospholipiden, HDL-cholesterin, very-low-density-lipoproteins, intermediate-density-lipoproteins, low-density-lipoproteins, high-density-lipoproteins2 (HDL2), HDL3 und die PHLA. Zu Beginn der Studie bestanden keine signifikanten Unterschiede zwischen Gruppe I und II im Hinblick auf alle oben angeführten Parameter. Die Umstellung von Glibenclamid auf Insulin resultierte in einem ständigen Abfall der Blutglukose (p〈0,01) bei gleichzeitigem Anstieg der HDL2 (p〈0,01) und der PHLA (p〈0,01) während des Untersuchungszeitraums. Im Gegensatz dazu hatte die Umstellung von Glibenclamid auf Placebo keinen signifikanten Effekt. Die Ergebnisse zeigen, daß bei insulinunabhängigen Diabetikern, die mit Sulphonylharnstoffpräparaten nicht mehr befriedigend eingestellt waren, eine Umstellung auf Insulin nicht nur zu einer weitgehenden Normalisierung des Glukosestoffwechsels sondern auch zu einer signifikanten Besserung der Störung im Lipoproteinstoffwechsel bei Diabetes mellitus führt. Glibenclamid per se dürfte weder die Konzentration der HDL2-fraktion noch die PHLA beeinflussen.
    Notes: Summary To study the effect of treatment on plasma lipid and lipoprotein concentration and on postheparin-lipolytic activity (PHLA) in plasma, 26 noninsulin-dependent diabetics were investigated who were treated with maximally effective doses of glibenclamide. The patients were randomly divided into two groups: In group I, glibenclamide was replaced by a long-acting insulin preparation given once daily at variable doses until satisfactory metabolic control was achieved. In group II, glibenclamide was replaced by placebo. At weeks 0, 1, 3, 7, and 12 after change of treatment, the following parameters were determined: Blood glucose, plasma concentrations of cholesterol, triglycerides, phospholipids, HDL cholesterol, very-low-density lipoproteins, intermediate-density lipoporteins, low density lipoproteins, high-density lipoproteins2 (HDL2), HDL3, and PHLA. At week 0, no statistically significant differences existed between group I and group II with respect to all parameters mentioned above. The replacement of glibenclamide by insulin resulted in a continous decrease of blood glucose (p〈0.01) with a concomitant increase in HDL2 (p〈0.01) and in PHLA (p〈0.01) during the period of investigation. In contrast, replacement of glibenclamide by placebo exerted no significant influence on all determined parameters during 12 weeks. These data suggest that in noninsulin-dependent diabetics, who are inadequately controlled by sulfonylureas, an adequate insulin substitution is necessary to correct, apart from glucose metabolism, the impaired lipoprotein metabolism of diabetes mellitus. Sulfonylureas per se seem not to decrease the HDL2 fraction nor the PHLA.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1432-1440
    Keywords: Liver cirrhosis ; Lipoproteins ; LCAT ; Hepatic lipase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 12 patients with unequivocal post-alcoholic end-stage liver cirrhosis were compared with 12 healthy controls with regard to the plasma concentrations of lipids, lipoproteins (by rate zonal ultra-centrifugation) and apolipoproteins of high-density-lipoproteins (HDL) (by disc electrophoresis), as well as to the activities of lecithin-cholesterol acyltransferase (LCAT) in plasma and of hepatic lipase (HL) in post-heparin plasma. The cirrhotic group showed the following differences (all significant at thep〈0.01 level) from the control group: Total cholesterol, HDL-cholesterol, very-low-density-lipoproteins (VLDL), HDL, and HL were decreased. Intermediate-density-lipoproteins (IDL) were not detectable in the cirrhotic group. Low-density-lipoproteins (LDL) did not differ significantly from controls. However, LDL from cirrhotic patients contained more triglycerides but less esterified and free cholesterol (allp〈0.01). The percentage apolipoprotein composition of HDL did not differ significantly between controls and cirrhotics. Surprisingly, LCAT acivity in plasma as well as the ratios between esterified and free cholesterol in plasma, LDL, and HDL were nearly identical in both groups. It seems likely that LCAT activity decreases only in the states of acute or subacute liver injury or of biliary obstruction. Severe chronic liver damage as in our cases of end-stage liver cirrhosis without any signs of acute liver injury exhibits apparently no defect in cholesterol esterification.
    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 60 (1982), S. 337-342 
    ISSN: 1432-1440
    Keywords: Hyperthyreosis ; Hypothyreosis ; Lipoproteins ; Postheparin lipolytic activity ; Hyperthyreose ; Hypothyreose ; Lipoproteine ; Postheparin-lipolytische Aktivität
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Konzentration der Hauptlipoproteindichteklassen und die Post-heparin-lipolytische Aktivität (PHLA) wurden im Plasma von 12 hyperthyreoten und 8 hypothyreoten Patienten im Vergleich mit 12 euthyreoten, stoffwechselgesunden Kontrollpersonen bestimmt. Low-density-lipoproteins (LDL) und high-density lipoproteins2 (HDL2) waren bei Hyperthyreose erniedrigt (p〈0,01) und bei Hypothyreose erhöht (p〈0,01). Im Hinblick auf die Konzentration der very-low-density-lipoproteins (VLDL) und der HDL3 bestanden keine signifikanten Unterschiede, während die intermediate-density-lipoproteins (IDL) bei hypothyreoten Patienten erhöht waren (p〈0,05). Die PHLA war bei Hyperthyreose erhöht (p〈0,01) und bei Hypothyreose erniedrigt (p〈0,01). Die chemische Zusammensetzung der LDL und HDL2 von Patienten mit Hyper- und Hypothyreose sowie die Apolipoproteinzusammensetzung des Proteinanteils der HDL2 unterschieden sich nicht signifikant von denen der Kontrollen. Bei Analyse der Daten aller untersuchten Individuen ergab sich keine signifikante Beziehung zwischen VLDL und HDL2, während HDL2 und PHLA signifikant negativ korrelierten (p〈0,05). Es wird vermutet, daß HDL2 zusätzlich zu den LDL als Träger des bei der Hypothyreose vermehrt vorhandenen Cholesterins fungieren.
    Notes: Summary The concentration of the main lipoprotein density classes and the postheparin lipolytic activity (PHLA) were determined in the plasma of 12 hyperthyroid and eight hypothroid patients in comparison with 12 euthyroid, metabolically healthy individuals. Low-density lipoproteins (LDL) and high-density lipoproteins2 (HDL2) were decreased in hyperthyreosis (p〈0.01) and increased in hypothyreosis (p〈0.01). No significant differences could be detected with respect to the concentration of very low-density lipoproteins (VLDL) as well as for HDL3, whereas intermediate-density lipoproteins (IDL) were higher in hypothyreotics than in controls (p〈0.05). PHLA was increased in hyperthyreosis (p〈0.01) and decreased in hypothyreosis (p〈0.01). The chemical composition of LDL and HDL2 as well as the apolipoprotein composition of the protein moiety of HDL2 in hyperthyreosis and in hypothyreosis did not significantly differ from those in the control group. When data from all individuals studied were analyzed, no significant relationship could be detected between the concentrations of VLDL and HDL2, whereas HDL2 and PHLA correlated in a negative manner (p〈0.05). It is suggested that HDL2, in addition to LDL, acts as carrier protein for the cholesterol increasingly yielded in hypothyreosis.
    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 62 (1984), S. 593-594 
    ISSN: 1432-1440
    Keywords: Lipoprotein lipase ; Blood-pH in vivo ; Acidosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Diseases associated with acidotic blood-pH, such as chronic renal disease, diabetes mellitus or chronic alcoholism, show a marked impairment of lipoprotein lipase. Therefore we influenced blood-pH in 3 healthy subjects by infusions to get alkalotic, neutral and acidotic blood-pH on three days in series. On each day blood-pH from capillary blood and post-heparin lipoprotein lipase from fasting plasma was determined. In comparison to neutral blood-pH in vivo, alkalosis did not influence lipoprotein lipase. In contrast, during artificial acidosis, lipoprotein lipase was impaired significantly (p〈0.01). Therefore, it seems, that acidosis inhibits lipoprotein lipase in vivo.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The effect ofα-methyl-tyrosine on the noradrenaline content of the heart and the noradrenaline and dopamine content of the brain has been studied in control and thyroxine-treated male guinea pigs. In animals treated chronically with thyroxineα-methyl-tyrosine lowered the noradrenaline content of the heart (but not of the brain) to a greater extent than in controll animals treated with saline. It is concluded that in guinea pigs made thyreotoxic by the administration of thyroxine, the turnover of noradrenaline in the heart is higher than in control animals. The significance of this finding has been discussed.
    Notes: Zusammenfassung An männlichen Meerschweinchen wurde die Wirkung vonα-Methyl-Tyrosin auf den Noradrenalingehalt des Herzens und den Noradrenalinund Dopamingehalt des Gehirnes normaler und thyroxinvorbehandelter Tiere untersucht. Es konnte gezeigt werden, daßα-Methyl-Tyrosin die Noradrenalinkonzentration im Herzen (nicht aber im Gehirn) der thyroxinvorbehandelten Tiere viel stärker senkte als bei den Kontrolltieren. Es wird geschlossen, daß beim thyreotoxischen Zustand der Umsatz des Noradrenalins im Herzen von Meerschweinchen höher ist als bei den Kontrolltieren. Die Bedeutung dieses Befundes wird diskutiert.
    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...