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  • 1
    ISSN: 1432-0428
    Keywords: Islet amyloid polypeptide ; amylin ; Type 2 (non-insulin-dependent) diaibetes mellitus ; mRNA ; streptozotocin ; dexamethasone ; rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The response of the islet amyloid polypeptide gene to chronic dexamethasone treatment in adult rats was investigated. After 12 daily injections, rats were severely underweight and fasting blood glucose levels were elevated. When pancreatic mRNA was analysed, a 16-fold elevation in islet amyloid polypeptide mRNA was observed with only a fourfold increase in insulin mRNA levels. Pancreatic islet amyloid polypeptide and insulin mRNA levels were also determined 12 days after streptozotocin treatment. In these rats, which were not severely diabetic, the reduction in islet amyloid polypeptide mRNA levels was sixfold less than the reduction in insulin mRNA levels. In both these models of diabetes the ratio of islet amyloid polypeptide to insulin mRNA levels was raised. This would not be expected if the physiological role of islet amyloid polypeptide is as a simple hyperglycaemic agent opposing insulin action or release.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 65 (1987), S. 82-86 
    ISSN: 1432-1440
    Keywords: Katacalcin ; Tumor marker ; C-cell carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Katacalcin (KC) is situated on the C-terminal side of the procalcitonin molecule and is cleaved like calcitonin (CT) from this precursor peptide. Serum levels of KC were measured in 22 patients with C-cell carcinoma with a specific and sensitive radioimmunoassay (normal range, 〈0.1–0.15 ng/ml). Basal serum KC values in C-cell carcinoma patients were 0.32-290 ng/ml. There was a good correlation between KC and CT (r=0.98,P〈0.001). Serum KC, as well as CT, markedly increased after pentagastrin and calcium infusion. KC and CT were secreted in nearly equimolar amounts. During selective venous catheterization, KC and CT levels were increased in serum samples from veins draining tumor masses, which could be confirmed operatively. During the follow up, KC and CT measurements correlated well to the stage of disease. KC could be immunohistologically localized in C-cell carcinoma tissue. As a tumor marker, katacalcin is likely to be as useful as calcitonin in C-cell carcinoma.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1106
    Keywords: Calcitonin gene-related peptide ; Olivocochlear bundle ; Retrograde axonal transport ; Immunohistochemistry ; Biotin-wheat germ agglutinin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The origins of calcitonin gene-related peptide immunoreactive (CGRPI) fibers in the cochlea were examined in rats. Parasagittal transection of the brain just medial to the principal sensory trigeminal nucleus resulted in the ipsilateral disappearance of CGRPI fibers in the cochlea, indicating that the origins of these fibers lie in the central nervous system. Next, we used a highly sensitive method combining retrograde tracing and immunohistochemistry to identify the origins of the CGRPI fibers in the cochlea. After injection of biotin-wheat germ agglutinin (b-WGA) into the cochlea, CGRPI neurons in the ipsilateral lateral superior olivary nucleus also contained b-WGA granules. These findings indicated tht CGRPI efferent fibers are major components of the olivocochlear bundle.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Comparative Biochemistry And Physiology 3 (1961), S. 206-217 
    ISSN: 0010-406X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 5 (1986), S. 1091-1094 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1435-1463
    Keywords: CGRP ; stomach ; duodenum ; distribution ; origin, rat ; immunocytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We studied the three-dimensional distribution of structures with calcitonin gene-related peptide-like immunoreactivity (CGRPI) in the rat stomach and duodenum, including the origins of these structures, using indirect immunofluorescence in both muscle strips and frozen sections. There was a very dense meshwork of CGRPI fibers in the circular and longitudinal muscle layers, and also in the myenteric and submucous plexuses of the stomach and duodenum. No CGRPI neurons were seen in the stomach, even in rats treated with colchicine; in the duodenum, there was a group of CGRPI cells in the myenteric and submucous ganglia. No regional differences were seen in the stomach and duodenum. We found by experimental manipulations that CGRPI fibers in the stomach were exclusively extrinsic in origin; some of such fibers in the duodenum were intrinsic in origin, though most were supplied by CGRPI cells outside the duodenum.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 37 (1981), S. 1116-1118 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary As assessed by radioimmunoassay, and high performance liquid chromatography (HPLC), frog ultimobranchial calcitonin was found to be similar to synthetic human calcitonin but completely different from synthetic salmon calcitonin.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1106
    Keywords: Neurotensin projection ; Lateral parabrachial nucleus ; Central amygdaloid nucleus ; Coexistence ; Calcitionin gene-related peptide ; Immunocytochemistry ; Double-staining method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The origin of neurotensin-like immunoreactive (NTI) fibers in the central amygdaloid nucleus (AC) in the rat was examined using indirect immunofluorescence and retrograde tracing combined with immunocytochemistry. Destruction of the external subdivision of the lateral parabrachial nucleus, which contains a group of NTI neurons, resulted in a marked reduction of these fibers in the ipsilateral AC, which suggests that most of these fibers are of extrinsic origin. This was also supported by the finding that injection of fast blue dye into the AC labeled many neurons in the external subdivision of the lateral parabrachial nucleus ipsilaterally, and that simultaneous treatment with antiserum against NT stained some of these neurons. Subsequent immunohistochemical staining of alternate sections revealed that many of these NTI neurons were also labeled by calcitonin gene-related peptide antiserum.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In this immunohistochemical study, the ontogenic development of calcitonin-gene-related peptide (CGRP) in the rat thyroid was investigated and compared with that of calcitonin using the indirect-immunofluorescence method. Parafollicular cells with immunoreactivity to both CGRP and calcitonin first appeared at an early stage of gestation (days 17 and 18) in the central portion of the thyroid. Cells immunoreactive to CGRP and calcitonin had became numerous by gestational day 22. After postnatal day 7, CGRP- and calcitonin-immunoreactive (CIR) cells increased rapidly both in number and in the intensity of their fluorescence. In 14- to 90-day old rats, many intensely immunoreactive cells were distributed in the central portion of the thyroid. The cells immunoreactive to CGRP and to calcitonin had an almost identical ontogenic appearance. In 14-day-old and adult rats, C-IR cells also exhibited CGRP immunostaining, suggesting that these cells simultaneously produce and store CGRP during ontogeny.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 20 (1981), S. 208-215 
    ISSN: 1436-6215
    Keywords: apricot seed kernels ; amino acid composition ; PER-data
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Notes: Summary Hamawy apricot seed kernels (sweet), Amar apricot seed kernels (bitter) and treated Amar apricot kernels (bitterness removed) were evaluated biochemically. All kernels were found to be high in fat (42.2–50.91 %), protein (23.74–25.70 %) and fiber (15.08–18.02 %). Phosphorus, calcium, and iron were determined in all experimental samples. The three different apricot seed kernels were used for extensive study including the qualitative determination of the amino acid constituents by acid hydrolysis, quantitative determination of some amino acids, and biological evaluation of the kernel proteins in order to use them as new protein sources. Weanling albino rats failed to grow on diets containing the Amar apricot seed kernels due to low food consumption because of its bitterness. There was no loss in weight in that case. The Protein Efficiency Ratio data and blood analysis results showed the Hamawy apricot seed kernels to be higher in biological value than treated apricot seed kernels. The Net Protein Ratio data which accounts for both weight, maintenance and growth showed the treated apricot seed kernels to be higher in biological value than both Hamawy and Amar kernels. The Net Protein Ratio for the last two kernels were nearly equal.
    Type of Medium: Electronic Resource
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