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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 739 (1994), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 739 (1994), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 680 (1993), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 692 (1993), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 680 (1993), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 657 (1992), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 412 (1988), S. 417-421 
    ISSN: 1432-2013
    Keywords: Exercise ; Creatine kinase isoenzymes ; Aspartate aminotransferase ; Sex difference ; Muscle damage ; Rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Changes in creatine kinase (CK) activity and CK isoenzyme profiles in plasma after exercise were studied in rats in order to establish the source of the exercise-induced rise in CK activity. Male and female rats ran on a treadmill for 2 h and blood samples, taken before and after exercise, were assayed for total CK, CK isoenzymes and aminoaspartate transaminase (AST) activity. These enzymes were also assayed in homogenates of liver and several muscles. We found that the isoenzyme composition of liver, plasma and muscle did not differ between the sexes. However, the exercise-induced CK and AST responses did differ: CK and AST increased after exercise in males (101% and 15% resp.), but much less in females (47% and 1%). Although the isoenzyme profiles in rest did not differ, significant differences were observed after running: in males CK-MM inereased with 678%, but females only showed a 114% increase. In contrast, CK-BB showed a small increase that was about the same for both sexes (males 41%, females 35%). We conclude that both males and females show a small and similar increase in CK-BB activity after exercise, and that a large release of CK-MM from skeletal muscle, observed only in males, accounts for sex-linked differences reported earlier.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 237 (1990), S. 234-238 
    ISSN: 1432-1459
    Keywords: Muscle damage ; Creatine kinase ; Myoglobin, exercise ; Duchenne muscular dystrophy ; Exercise test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Changes in muscle proteins in serum after exercise were studied to evaluate the use of such proteins as indicators of increased muscle membrane vulnerability. Seventy-one women were asked to perform bicycle exercise for 45 min at a moderate load; four proteins (creatine kinase — CK, myoglobin — Mb, aldolase — Ald and pyruvate kinase — PK) were measured in serum up to 24 h after exercise. Twenty-one women were carriers of Duchenne's muscular dystrophy (DMD); these are known to show an elevated serum CK activity at rest, as well as an increased CK response after exercise. Fifty women without a family history of neuromuscular disease were tested to obtain normal values: they showed a small peak (18%) of CK activity 8h after exercise, and an even smaller peak of Mb (9%) 1h after exercise. The mean post-exercise increase for both CK and Mb in the 21 DMD carriers was significantly higher than in controls; the maximum of Mb, on average 70% of baseline levels, was reached 1h after exercise and was higher than that for CK (48%), which was reached 8 h after exercise. It is concluded that myoglobin levels after exercise are a good index of increased vulnerability of the muscle membrane.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2013
    Keywords: Vitamin E (deficiency) ; Muscle damage ; Sex difference ; Muscle histology ; Exercise ; Rat ; Morphology ; Creatine kinase ; Isoenzymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rats, fed a vitamin-E-deficient diet for 6 weeks, performed treadmill exercise for 2 h. Muscle damage was assessed by measuring the creatine kinase (CK) activity in plasma before and after exercise, and by studying semithin longitudinal sections of the soleus muscle 48 h after running. Vitamin-E-deficient male and female rats showed an increased post-exercise CK activity when compared to matched controls, but male rats showed a larger CK response than females. This rise in plasma CK activity was caused mainly by an increased activity of the muscle-specific CK-isoenzyme, CK-MM (males + 1238%; females + 540%, P〈0.05). In a parallel histological study we observed in vitamin-E-deficient male rats a dramatic and significant disturbance of the normal cyto-architecture of the muscle fibres after exercise (focal necrosis, phagocytosis and cellular infiltrates), whereas in females only minor, non-significant, changes were seen. We conclude that vitamin E deficiency enhances the susceptibility to exercise-induced muscle damage in male rats more than in female rats. This difference between the sexes is attributed to the protective effect of oestradiol that remains operative in female rats when the vitamin E status is disturbed: male rats lack such hormonal protection.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 9 (1985), S. 103-115 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Le programme d'étude des organes artificiels à Berlin a débuté il y a plus de 20 ans. En ce qui concerne le coeur il s'est attaché à la mise au point d'un coeur artificiel de type électro-pneumatique cependant que la recherche concernait simultanément la mise au point d'un appareil d'assistance cardiaque temporaire et l'étude biologique des matériaux. Les thèmes de ce programme sont les suivants: (a) interactions entre les matériaux naturels et artificiels; (b) développement d'une pompe sanguine et étude de l'usure in vitro; (c) éléments conducteurs et transmission énergétique; (d) mesure des équipements que nécessitent la surveillance et le contrôle automatique du coeur artificiel; (e) études in vivo de la réaction du système circulatoire des organes; (f) entraînement de l'équipe pour l'application clinique du coeur artificiel. Les efforts conjoints des ingénieurs de différentes disciplines et des médecins travaillant ensemble dans le département de chirurgie expérimentale, supportés dans le passé par les partenaires industriels, ont résulté après des études étendues in vitro et in vivo dans l'application clinique d'appareils d'assistance temporaire et dans la réalisation d'un coeur artificiel électro-pneumatique transportable.
    Abstract: Resumen El programa de órganos artificiales se inició en Berlín hace más de 20 años. El mayor énfasis, dentro del programa de asistencia circulatoria y reemplazos mecánicos, ha sido realizado y continúa siéndolo en el desarrollo de un sistema electroneumático de corazón artificial total. Además, se han incluído en el programa de investigación general el desarrollo de un sistema de asistencia temporal junto con estudios en el campo de los biomateriales. Los principales tópicos del programa son: las interacciones entre materiales naturales y artificiales, el desarrollo de bombeo sanguíneo y las pruebas de fatiga in vitro, unidades de propulsión y transmisión energética, equipos de medición necesarios para la vigilancia y control automático del sistema de corazón artificial total, estudios in vivo de la respuesta del sistema circulatorio y de los órganos, el adiestramiento in vivo del personal técnico en cuanto a aptitud y confiabilidad. El esfuerzo coordinado de ingenieras de diferentes disciplinas y de médicos, trabajando continuamente en el departamento de cirugía experimental, apoyado en el pasado por socios industriales, ha resultado, después de extensas investigaciones in vitro e in vivo, en la aplicación clínica de sistemas de asistencia circulatoria temporal y en la realización de un sistema de corazón artificial electro-neumático percutáneo y portátil.
    Notes: Abstract The artificial organs program in Berlin started more than 20 years ago. The main emphasis in the circulatory assist and replacement devices program was and still is on the development of an electro-pneumatic total artificial heart (TAH) system. Additionally, a temporary assist system and investigations in the field of biomaterials are included in the research activities. Topics of the program are: interactions between natural and artificial materials, blood pump development and in vitro fatigue testing, driving units and energy transmission, measurement equipment needed for the surveillance and automatic control of the TAH system, in vivo studies of the response of the circulatory system and the organs, in vivo reliability, and training of the staff for clinical readiness. The joint efforts of engineers of different disciplines and medical doctors, working together in the department of experimental surgery, supported in the past by industrial partners, resulted after extensive in vitro and in vivo investigations in the clinical application of temporary assist devices and the realization of a percutaneous portable, electro-pneumatic total artificial heart system.
    Type of Medium: Electronic Resource
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