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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 86 (1964), S. 1297-1300 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-908X
    Keywords: Key words: Rheumatoid arthritis — Hyaluronate — Intra-articular injection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Objective: The purpose of this study was to analyze the biochemical characteristics of synovial fluids after treatment of patients with rheumatoid arthritis (RA) with intra-articularly injected hyaluronate (HA).¶Treatment: In a double-blind study, 13 patients received intra-articular injections of 1% HA in phosphate buffered saline (PBS) while 13 other patients were injected 0.01% HA in PBS, as the control group. Injections were administered once a week for five weeks.¶Methods: Clinical efficacy and characteristics of synovial fluid were compared between groups.¶Results: Significant clinical improvement was observed in the HA-treated group compared to the control group. The viscosity of retained synovial fluid increased. Stringing and HA concentration increased significantly whereas the concentrations of protein and chondroitin sulfate 4 and 6 decreased significantly. The HA molecular weight remained the same in both groups.¶Conclusion: Intra-articular HA injection altered the properties of synovial fluid and proved efficacious for patients with RA.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 28 (1985), S. 692-696 
    ISSN: 1432-0428
    Keywords: Sympathetic nervous system activity ; noradrenaline turnover ; streptozotocin rat ; brown adipose tissue ; heart ; pancreas ; insulin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To clarify whether activity of the sympathetic nervous system is decreased in streptozotocin-induced diabetic rats, noradrenaline turnover, which is a reliable indicator of sympathetic nervous system activity, was measured in the interscapular brown adipose tissue, heart and pancreas of streptozotocin diabetic rats. Results from studies using inhibition of noradrenaline biosynthesis with α-methyl-p-tyrosine demonstrated significant reductions (p〈0.05-0.001) in sympathetic nervous system activity in the interscapular brown adipose tissue, heart and pancreas of streptozotocin (65 mg/kg) diabetic rats, compared with measurements in streptozotocin (35 mg/kg) diabetic and saline-control rats. The daily injections of neutral protamine Hagedorn insulin to streptoz/otocin (65 mg/kg) diabetic rats prevented the decrease of noradrenaline turnover in the interscapular brown adipose tissue and heart significantly (p〈0.02), but this was less marked in pancreas, compared with non-treated streptozotocin (65 mg/kg) diabetic rats. Furthermore reduced noradrenaline turnover was also observed in the control rats which showed comparable changes in body weight to the rats injected with streptozotocin (65 mg/kg). These results suggest that poorly controlled streptozotocin diabetic rats may have reduced sympathetic nervous function, and that insulin therapy might prevent this.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1063-7826
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The dark conductivity and photoconductivity along with pulsed electron spin resonance have been measured over a wide temperature range with a high crystallinity hydrogenated microcrystalline silicon (μc-Si: H) sample. The transport mechanism in μc-Si: H is discussed on the basis of these measurements. Striking similarities in the temperature dependences of the dark conductivity and photoconductivity between μc-Si: H and some well-studied materials, such as hydrogenated amorphous silicon, suggest that at low temperatures hopping of carriers between localized states dominates the transport properties of μc-Si: H.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0428
    Keywords: Islet amyloid polypeptide ; amylin ; diabetes mellitus ; fasting concentration ; oral glucose tolerance test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fasting plasma islet amyloid polypeptide concentrations and their responses to an oral glucose load were determined in non-diabetic control subjects and patients with abnormal glucose tolerance in relation to the responses of insulin or C-peptide. Plasma islet amyloid polypeptide was measured by radioimmunoassay. In the non-diabetic control subjects, fasting plasma islet amyloid polypeptide was 6.4±0.5 fmol/ml (mean ± SEM) and was about 1/7 less in molar basis than in insulin. The fasting islet amyloid polypeptide level rose in obese patients and fell in patients with Type 1 (insulin-dependent) diabetes mellitus. In non-obese patients with impaired glucose tolerance and Type 2 (non-insulin-dependent) diabetic patients without insulin therapy, the level was equal to that of the control subjects, but a low concentration of islet amyloid polypeptide relative to insulin or C-peptide was observed in the non-obese Type 2 diabetic group. The patterns of plasma islet amyloid polypeptide responses after oral glucose were similar to those of insulin or C-peptide. However, compared to non-obese patients, a hyper-response of islet amyloid polypeptide relative to C-peptide was noted in obese patients who had a hyper-response of insulin relative to C-peptide. This study suggests that basal hypo-secretion of islet amyloid polypeptide relative to insulin exists in non-obese Type 2 diabetes and that circulating islet amyloid polypeptide may act physiologically with insulin to modulate the glucose metabolism.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0428
    Keywords: Keywordsβ3-adrenergic-receptor gene ; obesity ; insulin resistance syndrome ; genetics ; polymorphism.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We investigated whether the polymorphism of the β 3-adrenergic receptor (β 3-AR) gene, which is associated with insulin resistance in non-diabetic subjects and an earlier onset of non-insulin-dependent diabetes mellitus in Pima Indians, was associated with visceral fat obesity and features of the insulin resistance syndrome in Japanese premenopausal obese women. There was no difference between 131 obese women and 256 control subjects (0.23 vs 0.17, p = 0.112) in the frequency of the Arg64 allele. The visceral fat area measured by computerised tomography scan was greater in homozygous Arg64Arg (172 ± 17 cm2, n = 6) and heterozygous Trp64Arg (178 ± 47 cm2, n = 48) women than in women homozygous for the Trp64Trp (121 ± 46 cm2, n = 77) genotype (p 〈 0.01). This was also reflected by increased total body fat but not by increased body mass index. The association between the Trp64 allele and visceral fat mass by multiple regression analysis, was independent of age, body mass index and total fat mass (p 〈 0.004). Moreover, homozygous carriers of the Arg64 allele had higher systolic blood pressure, higher fasting and post-load glucose and insulin concentrations, higher cholesterol, and triglyceride and lower HDL-cholesterol concentrations than homozygous carriers of the Trp64 allele. Some of these differences were also observed between heterozygous Trp64Arg and homozygous Trp64Trp genotypes (glucose tolerance, insulin and cholesterol concentration). We conclude that in obese women the β 3-AR polymorphism may be used as a genetic marker for visceral fat obesity and the insulin resistance syndrome. [Diabetologia (1997) 40: 200–204]
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0533
    Keywords: Acute porphyria ; Porphyric neuropathy ; Axonal degeneration ; Uroporhyrinogen I synthetase ; Ferrochelatase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An autopsy case of a 37-year-old woman with acute porphyria is reported. The patient began to complain of severe menstrual pains, and later developed serious peripheral neuropathy and various autonomic nervous symptoms. The autopsy revealed a marked loss and degeneration of axons and myelin sheaths in the peripheral nervous system (PNS), and prominent central chromatolysis of the spinal anterior horn cells. The predominant process of the peripheral neuropathy appeared to be axonal degeneration. Biochemical analysis showed a marked increase of delta-aminolevulinic acid (ALA), porphobilinogen, uroporphyrin, and coproporphyrin in the urine, and an increase of coproporphyrin and protoporphyrin in the stools and blood. In the analysis of the enzymatic activities of the liver and bone narrow, the activity of ALA synthetase (ALA-S) was markedly increased, and the activities of both uroporphyrinogen I synthetase (URO-S) and ferrochelatase were decreased. It was characteristic in this case that the enzymatic abnormalities found in both acute intermittent porphyria (AIP) and variegate porphyria (VP) coexisted. Biochemical analysis of the sciatic nerve showed an increase of ALA-S activity and a decrease of both URO-S and ALA dehydrase activities. This was the first report that indicated the presence of abnormal activities of the heme biosynthetic enzymes in the peripheral nerves of porphyric patients. The possibility was discussed that these enzymatic abnormalities of the heme biosynthesis in the peripheral nerve itself might be strongly related to the pathogenesis of the porphyric neuropathy.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Feeding under conditions of reduced oxygen supply prompted an increase in serum, arterial and brain tissue levels of thiobarbituric acid (TBA)-reacting substances. These observations indicated the possibility that hypoxia might be one of the factors predisposing to the accumulation of lipid peroxide.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 38 (1982), S. 501-502 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Immunopotentiators such as BCG, levamisole, PS-K and OK-432 prevent carbon tetrachloride (CCl4) hepatotoxicity, and in spite of exposure to CCl4 the liver tissue levels of thiobarbituric acid (TBA) reactive substances were not increased in rats pretreated with such immunopotentiators.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-0649
    Keywords: 42.60.Kg ; 87.60 Gp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes a new application of optical heterodyne detection using a laser beam for two-dimensional imaging of the internal structure of strongly scattering media in which the structure is completely obstructed from normal visual observation. The directional resolution capability for image formation due to the excellent antenna properties of the heterodyne technique is verified experimentally using a ground glass to cause strong scattering of the signal beam. Successful image detection of a test target placed in a highly scattering absorptive medium, with spatial resolution better than 400 μm in the case of our experiments, demonstrates that this Coherent Detection Imaging (CDI) method can overcome the diffuse nature of images in media such as those of biomedical interest and others to achieve scanning and tomographic imaging.
    Type of Medium: Electronic Resource
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