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  • Articles  (22)
  • Calcification
  • Gas chromatography
  • Springer  (22)
  • MDPI Publishing
  • 1980-1984  (22)
  • 1965-1969
  • 1980  (22)
Collection
  • Articles  (22)
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Keywords
Publisher
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  • 1980-1984  (22)
  • 1965-1969
Year
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Influence of calcium depletion on medullary bone of laying hens (1980)
    Springer
    Calcified tissue international 32 (1980), S. 221-228 
    Details
    ISSN: 1432-0827
    Keywords: Medullary bone ; Calcification ; Low-calcium diet ; Parathyroid hormone ; Estrogens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Medullary bone of birds maintained on a low-calcium diet represents a good model to study modifications of matrix composition in calcified tissue undergoing intense formation and resorption. The composition of the bone matrix during the low-calcium diet has been analyzed by both chemical and histological techniques. Sixty White Leghorn pullets 1 year old were used for the experiment. Fifteen birds served as controls and were killed on day zero; the remaining birds were placed on a calcium-deficient diet (0.13% calcium) and sacrificed after 4, 7, and 12 days of treatment in groups of 15. Serum levels of calcium, PTH, and estrogens were also measured. Chemical analysis of the samples were made for total nitrogen, hydroxyproline, hexosamine, hexoses, calcium, and phosphorus. Collagen and proteoglycans of the matrix of medullary bone of the egg-laying hens were found to be affected by the low-calcium diet. They either increased or decreased during the experiment but never in parallel. The increment of serum PTH is considered responsible for the variations in the amount of collagen. The effects of this hormone are magnified by the fall of serum estrogens as shown also by variations in the amounts of noncollagenous protein. In the late phase of the diet the matrix is represented by poorly calcified osteoid tissue rich in noncollagenous protein, i.e., proteoglycans and glycoproteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408545
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  • 2
    Electronic Resource
    Electronic Resource
    Relationship between proteolipids and calcium-phospholipid-phosphate complexes inBacterionema matruchotii calcification (1980)
    Springer
    Calcified tissue international 30 (1980), S. 167-174 
    Details
    ISSN: 1432-0827
    Keywords: Proteolipid ; Calcium-phospholipid-phosphate complexes ; Calcification ; Hydroxyapatite ; Membranes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Calcium-phospholipid-phosphate complexes (Ca-PL-P) were isolated from calcified and uncalcifiedBacterionema matruchotii and its calcified lipid extracts. Similar complexes were absent from the noncalcifying bacteriumActinomyces naeslundii. The majority of the Ca-PL-P complexes were associated with the proteolipid acidic phospholipid component. Ca-PL-P complexes isolated fromB. matruchotii and from calcified proteolipid contained phosphatidylinositol, phosphatidylinositol-4-phosphate, phosphatidylinositol-4,5-diphosphate, and phosphatidylserine. They consisted of approximately 52 mole % Ca, 32 mole % organic P, and 15 mole % Pi. During Ca-PL-P extraction fromB. matruchotii or its proteolipid-containing calcified lipid extracts, the proteolipid was dissociated and the apoprotein precipitated as fluff at the aqueous-organic solvent interface, thus explaining the failure to detect protein in Ca-PL-P preparations. When the ability of Ca-PL-P complexes and lipid fractions ofB. matruchotii to initiate apatite formation from metastable calcium phosphate solution was compared, the yield of hydroxyapatite decreased as follows: Ca-PL-P 〉 proteolipid acidic phospholipids 〉 proteolipid 〉 crude phospholipid 〉 total lipids 〉 whole cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408622
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of magnesium on lipid-induced calcification: An in vitro model for bone mineralization (1980)
    Springer
    Calcified tissue international 32 (1980), S. 139-143 
    Details
    ISSN: 1432-0827
    Keywords: Calcification ; Magnesium ; Phospholipids ; Ca-phospholipid-phosphate complex ; hydroxyapatite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The effect of Mg on hydroxyapatite proliferation induced by phosphatidyl serine, phosphatidyl inositol, and calcium-acidic phospholipidphosphate complexes has been studied in metastable calcium phosphate solutions of constant ionic strength and variable Mg/Ca ratio. Mg inhibits formation of the Ca-acidic phospholipid phosphate complexes, probably by competing with Ca for sites on the phospholipid molecules. Once the complexed acidic phospholipids are present, Mg has no effect on the proliferation of hydroxyapatite. This is shown by the invariant first-order rate constant for the disappearance of Ca during hydroxyapatite proliferation (kCa=0.0037 h−1) in solutions with Mg/Ca weight ratios ranging 0/1 to 10/1. These studies suggest that the presence of Mg does affect in vivo calcification and that the initiation of calcification by means of a Ca-PL-PO4 complex may be dependent on the Mg/Ca ratio in the calcifying tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408533
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  • 4
    Electronic Resource
    Electronic Resource
    Calcium incorporation in matrix vesicles isolated from chicken epiphyseal cartilage (1980)
    Springer
    Calcified tissue international 30 (1980), S. 227-232 
    Details
    ISSN: 1432-0827
    Keywords: Matrix vesicles ; Epiphyseal cartilage ; Calcification ; Alkaline phosphatase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Matrix vesicles isolated from chicken epiphyseal cartilage displayed an uptake of Ca2+ which was linear with time and the amount of vesicle protein. The matrix vesicles stimulated the incorporation of Ca2+ even at very low Ca × P, suggesting that they could bind Ca2+ and/or increase the local Ca × P to the metastable level. This uptake was abolished by EDTA or heating, and partially inhibited by cysteine, to the same extent as the hydrolysis of ATP. There was also a certain uptake of Ca2+ without added phosphate, this being stimulated by ATP up to 3 mmol, but diminishing again with higher concentrations. The presence of ATP failed to stimulate the uptake of Ca2+ more than an equimolar amount of phosphate in the form of inorganic KH2PO4. Mg2+ activated the hydrolysis ofp-nitrophenylphosphate at pH 10.5, and both Mg2+ and Ca2+ the hydrolysis of ATP from pH 7 to 9.5. Paradoxically, the omission of Mg2+ stimulated the uptake of Ca2+ several-fold.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408632
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrastructural and gas-chromatographic analysis of the preputial glands of male nude (nu/nu) mice (1980)
    Springer
    Cell & tissue research 211 (1980), S. 73-82 
    Details
    ISSN: 1432-0878
    Keywords: Preputial glands ; Nude mice ; Ultrastructure ; Gas chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The preputial glands of male nude (nu/nu) mice were analyzed by a combination of electron microscopy and gas chromatography to determine whether or not they are affected, like developing hairs and nails, by the nu/nu genotype. Results of the analyses revealed no differences between the glands of nude and normal male mice in either their ultrastructural characteristics or lipid secretory products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233724
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  • 6
    Electronic Resource
    Electronic Resource
    Studies on formation and resorption of fish scales (1980)
    Springer
    Cell & tissue research 211 (1980), S. 303-316 
    Details
    ISSN: 1432-0878
    Keywords: Fish scale ; Fine structure ; Development ; Calcification ; Cyprinodon variegatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Scale formation in Cyprinodon variegatus was found to be initiated at about 26 to 30 days after hatching. Ultrastructural investigation revealed that within 4 to 6 h in the first-formed scales the marginal cells begin to flatten and differentiate into osteogenic cells, which later change to osteoblasts and fibroblasts. These cells are separated from the surrounding epithelial cells by a basal lamina. The osteoid is formed by the marginal and osteogenic cells; the osseous layer by the osteoblasts; and the fibrillary plate by the fibroblasts. The osteoid is formed within 2 to 3 h after the initiation of the scale, and within 20 to 24 h the osseous layer is formed. Hydroxyapatite crystals are deposited in the matrix of the osseous layer without apparent association with collagen fibers. No matrix vesicles or dense bodies are evident at the sites of calcification. The fibrillary plate arises 18 to 20 h after the initiation of the scale. It is also partially calcified, but not before the third week of scale formation. The crystals develop almost exclusively between the collagen fibers at the extreme edge of the calcifying front, but solid calcification of the fibers results with further growth of the crystals. The fibroblasts appear to participate in calcification of the fibrillary plate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236451
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  • 7
    Electronic Resource
    Electronic Resource
    Ultrastructural and cytochemical aspects of the initial phases of an experimental cutaneous calcinosis (calcergy) in the rat (1980)
    Springer
    Cell & tissue research 212 (1980), S. 185-202 
    Details
    ISSN: 1432-0878
    Keywords: Calcergy ; Calcification ; Cutaneous calcinosis ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In rats a subcutaneous injection of KMnO4 leads to the calcification of the connective tissue. During mineral deposition, both intra- and extracellular changes are observed in the connective tissue. The intracellular phase is characterized by the formation of intramitochondrial granules and cytoplasmic vesicles, both in fibroblastic and extrinsic cells. In the extracellular phase, numerous heterogeneous matrix vesicles appear in the extracellular matrix. At the same time, globular particles which are resistant to microincineration, are observed between the collagen fibrils. The mineralization of the extracellular matrix takes place in two stages. The first stage comprises the appearance of needle-like structures and round aggregates. The needle-like structures are observed occasionally in the matrix vesicles and often in the extracellular matrix where they appear isolated or diverging from a central point. The round aggregates, composed of dense particles, are seen in the ground substance between the collagen fibrils. The second stage is characterized by a progressive mineralization of the collagen fibrils and the elastic fibers, without formation of extended calcified plaques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233954
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  • 8
    Electronic Resource
    Electronic Resource
    Possible amounts of oxygen in the carrier gas as compared to sample amounts (1980)
    Springer
    Chromatographia 13 (1980), S. 203-206 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Carrier gas purity ; Sample stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The amount of oxygen which may be present in the gas volume corresponding to a peak is investigated and compared to the sample amounts. It is shown that even with high purity carrier gases one may have a significant excess of oxygen present at low sample amounts. Attention is drawn to the possibility of impurity build-up by diffusion e.g. through the septum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261871
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  • 9
    Electronic Resource
    Electronic Resource
    Resolution of enantiomers and isotopic compositions by selective complexation gas chromatography on metal complexes (1980)
    Springer
    Chromatographia 13 (1980), S. 263-270 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Metal complexes ; Enantiomers ; Isotopic composition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The high selectivity of complexation gas chromatography has been employed for enantiomer resolution and isotope separation. Thus, a chiral olefin, 3-methylcyclopentene, has been resolved analytically on optically active dicarbonyl-rhodium(I)-3-trifluoroacetyl-1R-camphorate in squalane. The deuterated ethylenes C2H4−nDn have been separated on the same rhodium(I)-containing stationary phase. The chiral aliphatic oxiranes epoxypropane andtrans-2,3-epoxybutane have been resolved on optically active nickel(II)-bis-3-trifluoroacetyl-1R-camphorate in squalane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02265639
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  • 10
    Electronic Resource
    Electronic Resource
    The selective abstraction of aliphatic aldehydes by gas chromatographic stationary phases containing N,N′-disubstituted-p-phenylenediamines (1980)
    Springer
    Chromatographia 13 (1980), S. 555-556 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; On-column abstraction ; Aliphatic aldehydes ; Amine antioxidants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The selective on-column abstraction of aliphatic aldehydes by gas chromatographic stationary phases containing N-iso-propyl N′-phenyl-p-phenylenediamine is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02311859
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  • 11
    Electronic Resource
    Electronic Resource
    Gas chromatographic determination of impurities in nitromethane (1980)
    Springer
    Chromatographia 13 (1980), S. 35-39 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Nitromethane ; Nitroalkanes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Impurities in commercially available nitromethane have been determined by gas-liquid chromatography using six different column packings. Besides nitromethane, 1-nitropropane, 2-nitropropane, acetonitrile, methanol, small amounts of ethanol and acetaldehyde have been detected. The presence of formaldehyde, ethyl acetate and acetone is probable. Mixtures containing comparable amounts of the four nitroalkanes could be separated on all columns, but plots of logarithms of the retention times vs. carbon number or boiling points of the nitroalkanes or column temperatures were linear only in case of columns packed with Porapak R and Q.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02302714
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  • 12
    Electronic Resource
    Electronic Resource
    Gas chromatography on 10 um silica particles (1980)
    Springer
    Chromatographia 13 (1980), S. 686-692 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Micropacked columns in GC ; Microparticles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Porous silica microparticles designed for modern liquid chromatography have proven effective in gas chromatography. Columns of 35–50 cm gave plate heights as low as 3.3 particle diameters and speeds of 2400 theoretical plates per second or 500 effective theoretical plates per second. Inlet pressures up to 70 atmospheres were required using hydrogen as carrier gas. The particles as received were too retentive for fast chromatography and gave asymmetric peaks. A coating of fluorosilicone oil overcame both problems. Other coatings were less effective. Bonded phases proved less satisfactory on both counts and also gave substantially less efficient columns and greater flow resistance. Column efficiency and flow resistance were sharply dependent on physical properties of the particles. The most efficient packing was clearly spherical particles of 5–10 μm diameter with narrow size distribution, pore diamters about 50 nm, BET surface areas of 25–50 m2/g and surfaces modified with trifluoropropyl silicone. A six-component hydrocarbon sample was separated in 33 s with a resolution of 4 for the most difficult pair and in 2.6 s with a minimal resolution. Performance was limited by end effects and by available pressure so that much better performance can be expected from longer columns and higher pressures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02303438
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  • 13
    Electronic Resource
    Electronic Resource
    Separation behaviors of xylenol isomers by gas chromatography with helps of hydrogen bonding (1980)
    Springer
    Chromatographia 13 (1980), S. 752-754 
    Details
    ISSN: 1612-1112
    Keywords: Xylenol isomers ; Gas chromatography ; Polyols and polyethers as stationary phase ; Hydrogen bonding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Xylenol isomers can be resolved on most polyols (sugars or sugar alcohols) and polyethers (polyethylene glycol or polypropylene glycol) with hydrogen-bonding interaction. They are separated on vinical polyols which have more hydroxy hydrogen than tetrol, and even on vicinal triol when its hydroxy hydrogen is acidic (stronger proton donor). The stronger is the hydrogen bonding interaction between xylenols and the liquid phase, the better is the separation of 2,4- and 2,5-xylenol, and the poorer the separation of 2,4-and 2,3-xylenol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02265554
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  • 14
    Electronic Resource
    Electronic Resource
    Preparation of glass capillary columns (1980)
    Springer
    Chromatographia 13 (1980), S. 651-660 
    Details
    ISSN: 1612-1112
    Keywords: Capillary columns, glass ; Gas chromatography ; Column preparation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Glass capillary column chromatography is the most rapidly growing part of gas chromatography. There are many complex new analytical tasks and they require special capillary columns. Fortunately there is a wide range of column preparation methods available, and they make the preparation of glass capillary columns a more varied job than that of packed columns. In this paper these methods are reviewed and suggestions are given for making task-oriented columns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02302470
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  • 15
    Electronic Resource
    Electronic Resource
    Generalized equations to evaluate the gas hold-up time of chromatographic systems (1980)
    Springer
    Chromatographia 13 (1980), S. 73-84 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Gas hold-up time ; Dead time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The two approaches used for the calculation of the gas hold-up time and thus, the adjusted retention time are outlined, first for the restricted case when the carbon numbers of the three homologues used for the calculation are evenly spaced (c3−c2=c2−c1) and then, for the general case when (c3−c2) differs from (c2−c1). The basic difference in the philosophy of the two approaches is shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02263058
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  • 16
    Electronic Resource
    Electronic Resource
    Gas chromatography in qualitative analysis Part 16. An investigation of the oxidation of reference stationary phases used in column characterization by the Rohrschneider and McReynolds methods (1980)
    Springer
    Chromatographia 13 (1980), S. 177-182 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Column characterization ; Oxidation ; Stationary phases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The on-column oxidation of hydrocarbons commonly used as stationary phases in column characterization is investigated. In each case significant shifts of retention are observed, which may be negative or positive depending upon the polarity of the test solutes and the adsorptivity of the support material. In order to reduce the consequent uncertainties in the Rohrschneider [1] and McReynolds [2] polarity values, a new method of column characterization is proposed. The applicability of the new method is illustrated by a consideration of a range of silicone liquid phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02259311
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  • 17
    Electronic Resource
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    Determination of hydrochloric acid in organic solutions by gas chromatography (1980)
    Springer
    Chromatographia 13 (1980), S. 207-208 
    Details
    ISSN: 1612-1112
    Keywords: Trace determination ; Hydrogen chloride ; Ethylene oxide ; Gas chromatography ; Chlorinated solvents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A method is described for the determination of small quantities of hydrochloric acid in two chlorinated organic solvents (CHCl3 and CCl4). An excess of gaseous ethylene oxide is added to a liquid sample; the 2-chloroethanol formed is then analyzed by gas chromatography. The procedure is simpler and more sensitive in comparison with other conventional methods. It can be modified for other organic solvents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261872
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  • 18
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    The signal of the helium detector — Its shape and polarity (1980)
    Springer
    Chromatographia 13 (1980), S. 567-571 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Helium detector
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Four main factors which determine the shape and the polarity of the helium detector signal are discussed. All possible responses of this detector, both in elution and in vacancy chromatography, are presented and special attention is drawn to the intermediate region. The idea of ionization vacancy is introduced for the specific case of two components which are unresolved by the column and to which the detector responds with different sensitivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02311861
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  • 19
    Electronic Resource
    Electronic Resource
    Nucleosides as stationary phases for the separation of xylenol isomers by gas-liquid chromatography (1980)
    Springer
    Chromatographia 13 (1980), S. 574-575 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Xylenol isomers ; Sugar derivatives as liquid phases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Adenosine, guanosine and inosine used as liquid phases in gas chromatography permits the separation of all six xylenol isomers.
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    URL: http://dx.doi.org/10.1007/BF02311863
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  • 20
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    Die Wahl der Trägergasgeschwindigkeit bei der Analyse von Mehrkomponenten-Gemischen (1980)
    Springer
    Chromatographia 13 (1980), S. 61-67 
    Details
    ISSN: 1612-1112
    Keywords: Optimization ; Carrier gas velocity ; Gas chromatography ; Influence of temperature on optimum velocity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Zusammenfassung Die Wahl der mittleren, linearen Trägergasgeschwindigkeit bei der Analyse von Mehrkomponentengemischen unter isothermen und temperaturprogrammierten Bedingungen wird diskutiert. Es wird gezeigt, daß stets eine Trägergasgeschwindigkeit gewählt werden sollte, die mindestens gleich, besser jedoch höher ist, als die optimale Gasgeschwindigkeit für den ersten Peak, gemessen bei der Starttemperatur (Temperaturprogramm) oder bei der eingestellten Ofentemperatur (isotherme Fahrweise).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02302719
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  • 21
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    Gas chromatographic determination of the configuration of isovaline in antiamoebin, samarosporin (emerimicin IV), stilbellin, suzukacillins and trichotoxins (1980)
    Springer
    Chromatographia 13 (1980), S. 209-214 
    Details
    ISSN: 1612-1112
    Keywords: Configuration ; Chiral phases ; Gas chromatography ; Isovaline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The D-(resp. R) configuration of isovaline (=2-ethylalanine) was proved for the peptide antibiotics antiamoebin, Tü 165 (CBS 382.62), stilbellin, samarosporin (=emerimicin IV), suzukacillin B (A), trichotoxin A-40 and A-50. This contradicts the previously reported L-configuration for isovaline in antiamoebin and emerimicin IV. The configuration was determined by GC of the N-trifluoroacetyl-isovaline n-propyl ester on glass capillary columns coated with the chiral stationary phase N-propionyl-L-valine tert.-butylamide polysiloxane (Chirasil Val). The D-configuration of the isovaline from trichotoxin A-40 was also established independently using GC of N-pentafluoro-propionyl-isovaline (+)-3-methyl-2-butyl esters on glass capillary columns coated with OV 17.
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    URL: http://dx.doi.org/10.1007/BF02261873
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  • 22
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    Blood compatibility of polymers:in vitro andin vivo tests (1980)
    Springer
    Medical & biological engineering & computing 18 (1980), S. 521-526 
    Details
    ISSN: 1741-0444
    Keywords: Artificial heart ; Biodegradation ; Biomaterials ; Blood compatibility tests in vitro and in vivo ; Calcification ; Protein adsorption ; Toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Synthetic materials used for medical prostheses and devices, mainly those which will come into contact with blood, have to provide for specific properties. Three in vitro blood-compatibility tests are presented; one is a screening method (m.t.e.g.) whose results show remarkable correlations to in vivo behaviour, the other two (Nosé-blood-chamber, protein adsorption) yield more basis information on synthetic surfaces. Aspects of toxicity and biodegradation should be included in the definition of ‘blood compatibility’. After preselection by in vitro tests, a material has to pass an in vivo examination in animal experiments (shunt, catheter, tube, test chamber) under haemodynamic conditions. Finally, devices or prostheses in their intended shape, such as the total artificial heart, are implanted in animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02443330
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