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  • 1
    ISSN: 1432-1440
    Keywords: Diabetes mellitus ; Enteral formula ; Fructose ; Insulin ; Xylitol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To verify the benofit of nonglucose carbohydrates and fiber in enteral formula diets we studied the postprandial metabolism of eight healthy subjects after the intake of two helpings (25 g carbohydrates each) of five commonly used enteral formulas over 4 h. There were no significant differences in postprandial concentrations of blood glucose among the formulas. The area under the curve of postprandial insulin values, however, was significantly smaller after consumption of the fructose-containing formula (1948±285 μU min ml−1, P〈0.05) than after fiber-free (3222 ±678 μU min ml−1) or two fiber-containing products (2664±326 μU min ml−1, P〈0.05; and 3040±708 μU min ml−1, P〈0.05). The insulin area of the xylitol-containing formula (2307±364 μU min ml−1) was significantly smaller compared to the fiber-free product (P〈0.05). In addition, we found the postprandial increase in triglycerides to be significantly higher after the xylitol-containing formula (from 0.93±0.14 to 1.25±0.22 mmol/1) than after the fiber-free product (from 0.82±0.13 to 0.97±0.16 mmol/1, P〈0.05) or the two fiber-containing products (from 0.88±0.16 to 0.96±0.18 mmol/1, P〈0.05; and from 0.80±0.08 to 0.95±0.10 mmol/l, P〈0.05). We conclude that a patient with type 11 diabetes may benefit from replacing glucose and glucose-equivalent carbohydrates with fructose or xylitol.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1041
    Keywords: Lovastatin ; Pravastatin ; Hypercholesterolaemia ; cholestyramine ; lipoproteins ; apolipoproteins ; adverse effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effects of the HMG CoA reductase inhibitors lovastatin and pravastatin on serum lipids, lipoproteins and apolipoproteins have been studied in 35 patients with primary hypercholesterolaemia. LDL cholesterol was lowered to the same extent by both agents compared on a mg basis of each drug per day. HDL cholesterol was increased by lovastatin but not by pravastatin. The reduction in serum triglycerides, VLDL triglycerides and VLDL cholesterol was more pronounced after lovastatin than pravastatin. After 1 year the effect of combined treatment with 40 mg pravastatin and 8 g cholestyramine on the reduction in LDL cholesterol (−39%) in 13 patients was comparable to that of 80 mg lovastatin plus 8 g cholestyramine (−40%) in 12 patients with identical baseline values. Differences were also found in the effects of the combination therapy with the two drugs on HDL cholesterol, serum triglycerides, VLDL triglycerides, VLDL cholesterol, and apolipoproteins.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 39 (1982), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Neurosecretory granules were obtained from neurolobes of porcine pituitary glands. From the granules, highly purified neurophysins were prepared by HPLC. According to polyacrylamide gel electrophoresis, isoelectric focusing, N- and C-terminal amino acid residue determination, and amino acid composition, the neurophysins I1 I2, and II were identical to the neurophysins obtained from whole posterior lobes. Since degradation could not have occurred, we conclude that neurophysin I1 and I2 originated in the neurosecretory granules.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The separation of 38 hypophyseal or hypothalamic peptides and proteins by reversed-phase HPLC is described. The efficacy of several supports is discussed: large-pore reversed-phase silica supports turned out to be most effective in the separation of neuropeptides and proteins. The use of high sodium phosphate and phosphoric acid in the eluent resulted in high yields and better separation. On the basis of this procedure, β-lipotropin, β-endorphin, and adrenocorticotropic hormone were prepared from porcine pituitary glands, and human neurophysins from human pituitary posterior lobes. Moreover, this system is used for the analysis of the perifusate of pituitary posterior lobes, showing the release of microheterogeneous neurophysins.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1440
    Keywords: Low-density lipoprotein apheresis ; Immunoadsorption ; 3-Hydroxy-3-methylglutaryl coenzyme A reductase inhibitors ; Combined therapy ; Familial hypercholesterolemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To establish whether additional therapy with 3-hydroxy-3-methylglutaryl (HMG) coenzyme A (CoA) reductase inhibitors enhances the low-density lipoprotein (LDL) cholesterol lowering effect of LDL apheresis with immunoadsorption in the treatment of patients with familial heterozygous hypercholesterolemia and coronary artery disease we studied eight patients initially on immunoadsorption therapy alone for 3 years. The adding of HMG CoA reductase inhibitors decreased pretreatment LDL cholesterol from 6.76±0.98 to 4.97±0.98 mmol/l and posttreatment LDL cholesterol from 2.33±0.80 to 1.94±0.67 mmol/l and increased pre- and posttreatment high-density lipoprotein (HDL) cholesterol by 0.08 and 0.13 mmol/l respectively. The LDL/HDL ratio was reduced from 4.0 to 2.8 (prior to any therapy the ratio was 13.4). The increase in LDL cholesterol between weekly treatments was less steep under the combined therapy. At the same time the treated plasma volume during LDL apheresis could be decreased from 5070±960 to 4370±1200 1200 ml. We conclude that in patients with severe familial heterozygous hypercholesterolemia LDL apheresis should be combined with HMG CoA reductase inhibitors.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1440
    Keywords: Biliary mucus ; Nonsteroidal anti-inflammatory drugs ; Cholesterol nucleation time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary There is experimental evidence that inhibition of cyclooxygenase with nonsteroidal anti-inflammatory drugs may decrease cholesterol gall-stone formation and mitigate biliary pain in gall-stone patients. The mechanisms by which NSAIDs exert these effect are unclear. In a prospective, controlled clinical trial we examined the effects of oral indomethacin on the composition of human gall-bladder bile. The study included 28 patients with symptomatic cholesterol or mixed gallstones. Of these, 8 were treated with 3 × 25 mg indomethacin daily for 7 days prior to elective cholecystectomy while 20 received no treatment and served as controls. Bile and tissue samples from the gallbladder were obtained during cholecystectomy. Indomethacin tissue levels in the gallbladder mucosa, as assessed by HPLC, were 1.05±0.4 ng/mg wet weight, a concentration known to inhibit effectively cyclooxygenase activity. Nevertheless, no differences between the treated and untreated groups were found in the concentrations of biliary mucus glycoprotein (0.94±0.27 versus 0.93±0.32 mg/ml) or total protein (5.8±0.9 versus 6.4±1.3 mg/ml), cholesterol saturation (1.3±0.2 versus 1.5±0.2), or nucleation time (2.0±3.0 versus 1.5±2.0 days). However, biliary viscosity, measured using a low-shear rotation viscosimeter, was significantly lower in patients receiving indomethacin treatment (2.9±0.6 versus 5.6±1.2 mPa.s; P 〈 0.02). In conclusion, in man oral indomethacin decreases bile viscosity without alteration of bile lithogenicity or biliary mucus glycoprotein content. Since mucus glycoproteins are major determinants of bile viscosity, an alteration in mucin macromolecular composition may conceivably cause the indomethacin-induced decrease in biliary viscosity and explain the beneficial effects of nonsteroidal anti-inflammatory drugs in gallstone disease.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1440
    Keywords: Body mass index ; Waist-to-hip ratio ; Lipoproteins ; Glucose metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Android obesity is associated with metabolic disorders, but the causality of this relationship remains unclear. We investigated the association of body mass index (BMI) and waist-to-hip ratio (WHR) with hormones, glucose tolerance, insulin sensitivity, serum lipoproteins, and the serum activity of hepatic enzymes in 40 healthy premenopausal women (BMI 19.2–46.1, mean 32.6±1.3 kg/M2; WHR 0.68-1.01, mean 0.82±0.02). BMI correlated with WHR (r=0.52, P〈0.01). After correction for WHR, BMI was negatively correlated with high-density lipoprotein cholesterol and positively with total and very low density lipoprotein triglycerides, insulin sensitivity, blood glucose, serum insulin and glucagon. After adjustment for BMI, WHR was significantly associated with high-density lipoprotein cholesterol, total and very low density lipoprotein triglycerides, and the serum activities of hepatic enzymes but not with insulin sensitivity, blood glucose, serum insulin, or glucagon. According to these results, body fat distribution assessed by WHR is related to hypertriglyceridemia and alterations in hepatic function such as a fatty liver. WHR is not primarily related to glucose metabolism in healthy premenopausal women without preexisting metabolic disorders such as glucose intolerance. Therefore the observable association between android obesity and manifest impairment in glucose metabolism may develop secondarily during persisting hyperinsulinemia, which itself is primarily related to obesity. Thus an android body fat distribution may rather be an accompanying feature than a predictor of impaired glucose tolerance and insulin resistance.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 311 (1982), S. 430-431 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions The data demonstrate that even synthetic peptides have to be purified prior to testing biological activities and to immunization, because most commercially available peptides are impure. Furthermore, human insulin could be analyzed and characterized from tumor extracts using HPLC.
    Type of Medium: Electronic Resource
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