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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 46 (1995), S. 421-424 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Laser-Doppler-Flux ; Kutane Mikrozirkulation ; Morphaea ; Zirkumskripte Sklerodermie ; Therapiekontrolle ; Key words Laser-Doppler flux ; Microcirculation of the skin ; Morphoea ; Circumscribed scleroderma ; Control of therapy results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A 38-year-old male patient presented with circumscribed scleroderma (10×12 cm) in the left pectoral area. Hyperaemia of the skin in the area of the lilac ring (morphoea) was quantified by means of Laser-Doppler flux (LDF). At the lilac border of the morphoea LDF was increased to 420% of the reference value recorded for the unaffected skin of the contralateral side. Immediately after 13 days of antibiotic therapy (3×10 Mega penicillin G per day, i.v.) LDF normalized, though clinical changes were hardly apparent at this stage. By 6 months later, LDF was still in the normal range, and clinical signs, such as induration and hyperaemic redness, had also significantly improved. LDF measurements allow assessment of the therapeutic response to antibiotic therapy at a very early stage while the clinical situation is still unchanged.
    Notes: Zusammenfassung Wir berichten über einen 38jährigen Patienten mit zirkumskripter Sklerodermie (CS) und einem linkspektoralen Morphaea-Herd. Der Rückgang einer entzündlich gesteigerten Mehrdurchblutung im Areal des Lilac-Rings wurde durch wiederholte Messungen des Laser-Doppler-Flux (LDF) unter Therapie objektiviert. Unmittelbar vor Therapiebeginn sowie am letzten Behandlungstag und nach weiteren 6 Monaten wurde der Laser-Doppler-Flux an denselben Hautarealen im entzündlichen Randbereich, im Zentrum des Morphaea-Herdes sowie im Gesunden rechtspektoral bestimmt. Vor Antibiose fand sich im Lilac-Ring eine auf 420% – im Vergleich zum gesunden rechtspektoralen Referenzareal – gesteigerte Fluxmotion. Nach 13tägiger Therapie mit Penicillin G (3×10 Mega i.v.d) kam es zu einer Normalisierung der pathologisch erhöhten Meßwerte, während klinische Veränderungen zu diesem Zeitpunkt kaum erkennbar waren. Erst 6 Monate später – die LDF-Werte waren immer noch im Bereich der Vergleichswerte gesunder Haut – war klinisch eine deutliche Rückläufigkeit von Induration und Erythem sichtbar. Mit Laser-Doppler-Flux-Messungen kann frühzeitig, bevor klinisch eine Verbesserung diagnostiziert werden kann, das therapeutische Ansprechen nachgewiesen werden.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-3297
    Keywords: Mice ; ultrasonic calls ; infants ; individual differences ; signatures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Infant house mice, Mus musculus, produce ultrasonic calls that reliably lead to retrieval by adult mice. While individual differences in calls have been demonstrated both among and within species, the influences of age and sex on call characteristics have not been systematically investigated in mice. This study examined the influences of age, sex, and genotype (inbred versus hybrid) on the rate, length, and frequency characteristics of the calls of 486 male and female mice from 2 to 12 days of age. Rate of calling followed a shallow inverted U-shaped function across days. Call lengths decreased and call frequency characteristics increased, in a linear manner, with age. Females emitted fewer calls, with a smaller bandwidth, at some ages than males. Hybrid pups produced more calls of greater length and a lower frequency than inbred pups. These results indicate the presence of cues that could allow adult mice to behave differentially toward pups as a function of their age and sex.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-3297
    Keywords: Mice ; ultrasounds ; ultrasonic calls ; infants ; diallel cross ; individual differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Ultrasonic calls produced by young mice reliably elicit investigation and retrieval by adults. While there are large individual differences in the characteristics of these calls, little work has been done to partition that variation. We completed a 4 × 4 diallel cross and Hayman analyses on several characteristics of these cries. The major result was the detection of directional dominance toward a higher rate of calling, longer calls, and calls of lower overall frequency with a greater bandwidth. Within the context of biometrical genetic theory, we conclude that calls with such characteristics may have important fitness value. Extending this idea, we propose that within the population sampled for this study (the animals of the four inbred strains and 12 F1 hybrid groups), the calls most effectively eliciting investigation and retrieval would be calls with the average hybrid values of the diallel cross.
    Type of Medium: Electronic Resource
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