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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 82 (1972), S. 95-100 
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The development of various lactic acid bacteria during the early stages of fermentation (1–6 days after ensiling) in fish silage was studied. The first type of organisms that grew fastest was the oval cocci (most of them resembledLeuconostoc mesenteroides andStreptococcus lactis) followed by round cocci (mostlyS. faecalis). The number of oval cocci increased rapidly one day after ensiling and then decreased after 2–3 days. The round cocci increased first after 2–3 days and then decreased slowly after 4–5 days. Lactobacilli began to increase in number (more than 1010 per g silage) first after 6 days. Thus the pH in the silage was mainly lowered by the action of streptococci. Also in MRS medium the pH was more rapidly lowered byS. faecalis than byLactobacillus plantarum and other rods.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 136 (1981), S. 173-179 
    ISSN: 1432-1076
    Keywords: Lung surfactant ; Surfactant substitution ; Lung mechanics ; First breath ; Artificial ventilation ; Premature newborn rabbit ; Experimental hyaline membrane disease ; Bronchiolar epithelial lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Premature newborn rabbits, delivered on day 27 of gestation, were subjected to positive-pressure ventilation, with or without treatment with natural surfactant. The surfactant, obtained by centrifugation of lung wash from adult rabbits, was deposited in the tracheal cannula before the onset of ventilation. Parameters of lung mechanics, recorded during spontaneous ventilation after 1 h, were significantly improved in animals receiving surfactant. In comparison with littermate controls, surfactant-treated animals also had less prominent bronchiolar epithelial lesions. We conclude that treatment with supplementary surfactant facilitates functional adaptation of the premature lung and prevents the development of epithelial lung lesions during artificial ventilation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Scanning electron microscopy ; Immature lung ; Bronchiolar epithelium ; Artificial ventilation ; Surfactant replacement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Immature newborn rabbits, delivered on day 27 of gestation were ventilated artificially for 5–10 min with a peak insufflation pressure of about 35 cm H2O, with or without previous treatment with natural surfactant via the airways. The alveolar expansion pattern and the surface structure of the airways were then examined by scanning and transmission electron microscopy. Animals not receiving surfactant had very irregular alveolar expansion and showed prominent desquamation of the bronchiolar epithelium with a strikingly ragged appearance of the mucosa in the scanning electron microscopic images. Litter mates treated with surfactant had improved alveolar expansion and a flattened but otherwise nearly intact bronchiolar epithelium. The findings confirm the beneficial effect of surfactant replacement on the immature neonatal lung.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 152 (1993), S. 1024-1029 
    ISSN: 1432-1076
    Keywords: Bronchopulmonary dysplasia ; Mechanical ventilation ; Radiology ; Cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sequential chest radiographs from 40 newborn infants requiring assisted ventilation for respiratory distress syndrome or other conditions were evaluated with a new scoring system aiming at identifying abnormal expansion patterns and interstitial infiltrates representing an early stage of bronchopulmonary dysplasia (BPD). Age at examination ranged from 3 to 23 days. Tracheal effluent samples obtained from the babes during the same period of observation were examined cytologically for evidence of regenerating airway epithelium with squamous metaplasia, indicating BPD. According to the radiological scoring system 24 babies (60%) developed BPD, first diagnosed at a median age of 9 days. By cytological criteria 20 babies (50%) developed BPD, first diagnosed at a median age of 10.5 days. The results from radiological and cytological diagnosis of BPD were concordant in 16 babies (P〈0.05 by chi-square test). Using oxygen dependency at the age of 28 days as evidence of established BPD, the radiological scoring system alone had a sensitivity of 93% and a specificity of 53%. The corresponding figures for cytological assessment alone were 73% and 58%, respectively. By combining radiological and cytological findings, values for sensitivity and specificity were 67% and 68%, respectively.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1076
    Keywords: Key words Bronchopulmonary ; dysplasia ; Tracheobronchial aspirate ; Interleukins ; Cytokines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Bronchopulmonary dysplasia (BPD) is a chronic lung disease often occurring in ventilator-treated very low birth weight infants. The aetiology of BPD is multifactorial and pulmonary immaturity, high oxygen concentrations, peak inspiratory pressure levels and large tidal volumes during prolonged mechanical ventilation are important factors. We measured in tracheobronchial aspirate fluid (TAF) the concentrations of the pro-inflammatory cytokines tumour necrosis factor α, interleukin-1β (IL-1β), IL-6, IL-8, and IL-1 receptor antagonist in infants requiring artificial ventilation for BPD (n = 17) or respiratory distress syndrome (RDS) (n = 15) or postoperatively after surgery (n = 15). The median levels of all studied cytokines in TAF were higher in infants with BPD without local or systemic corticosteroid treatment compared to the median TAF levels of BPD neonates treated with corticosteroids (P = 0.06–P 〈 0.01). The neonates with BPD not treated with corticosteroids also showed higher levels of the five studied cytokines in TAF compared to infants on short-time ventilator treatment (P 〈 0.01–P 〈 0.001) and compared to neonates with RDS (P = 0.07–P 〈 0.001). The corticosteroid treated neonates with BPD had TAF cytokine levels approaching those of the control neonates. Conclusion Tumour necrosis factors α, IL-1β, IL6, IL8 and IL1ra were markedly elevated in tracheobronchial aspirate fluids from neonates with bronchopulmonary dysplasia. Corticoid treatment seemed to reduce these levels.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1076
    Keywords: Bronchopulmonary dysplasia ; Tracheobronchial aspirate ; Interleukins ; Cytokines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract Bronchopulmonary dysplasia (BPD) is a chronic lung disease often occurring in ventilator-treated very low birth weight infants. The aetiology of BPD is multifactorial and pulmonary immaturity, high oxygen concentrations, peak inspiratory pressure levels and large tidal volumes during prolonged mechanical ventilation are important factors. We measured in tracheobronchial aspirate fluid (TAF) the concentrations of the pro-inflammatory cytokines tumour necrosis factor α, interleukin-1β (IL-1β), IL-6, IL-8, and IL-1 receptor antagonist in infants requiring artificial ventilation for BPD (n=17) or respiratory distress syndrome (RDS) (n=15) or postoperatively after surgery (n=15). The median levels of all studied cytokines in TAF were higher in infants with BPD without local or systemic corticosteroid, treatment compared to the median TAF levels of BPD neonates treated with corticosteroids (P=0.06−P〈0.01). The neonates with BPD not treated with corticosteroids also showed higher levels of the five studied cytokines in TAF compared to infants on short-time ventilator treatment (P〈0.01−P〈0.001) and compared to neonates with RDS (P=0.07−P〈0.001). The corticosteroid treated neonates with BPD had TAF cytokine levels approaching those of the control neonates. Conclusion Tumour necrosis factors α, IL-1β, IL6, IL8 and IL 1 ra were markedly elevated in tracheobronchial aspirate fluids from neonates with bronchopulmonary dysplasia. Corticoid treatment seemed to reduce these levels.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 28 (1993), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Based on experience accumulated in a number of laboratories, a standardized protocol for phototoxicity testing in experimental animals by the dermal route is presented. By conducting a limited interlaboratory study, demonstrating a high degree of consistency using 8-methoxypsoralen {8-MOP) and acridine, the sensitivity and reproducibility of the proposed methodology is demonstrated. Important aspects of performing phototoxicity testing are discussed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1112 (1992), S. 52-56 
    ISSN: 0005-2736
    Keywords: GC-MS ; L2 phase ; Phospholipase C ; Polarization microscopy ; X-ray crystallography ; t-Butyldimethylsilyl ether
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 192 (1969), S. 145-148 
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 184 (1969), S. 237-251 
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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