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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 642 (1991), 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
    Marine mammal science 9 (1993), S. 0 
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: Movements of southern right whales between Gough Island and South Africa, and between Argentina and Tristan da Cunha, southern Brazil, and South Georgia are documented through matching of six photoidentified individuals. These include the resighting of a male in a mid-oceanic locality some 4,424 km away from (and 11 yr after) its last sighting in a coastal area where it had been seen in six of the preceding eight years, a female photographed in mid-Atlantic resighted with a calf in a coastal nursery area 2,769 km away, resightings of females with calves in different nursery areas 2,051 km apart in different years, and the first example of a link between a coastal nursery area and a feeding ground in high latitudes. The possible implications of these movements for estimates of calving interval and survival rate based on resightings in coastal waters are discussed. The potential for intermingling between populations on either side of the South Atlantic seems greater than was previously considered likely from a comparison of animals photographed in coastal waters.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 8 (1992), S. 0 
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: Several species of cetaceans naturally slough visible quantities of skin. We have investigated the prospect of using this material as a viable alternative to the use of biopsy darts for the collection of samples for molecular analysis. Pieces of skin were collected from free-ranging individuals of three different species—the humpback (Megaptera novaeangliae), sperm (Physeter macrocephalus) and right whales (Eubalaena glacialis). DNA was extracted from 11 pieces of sloughed skin and DNA “fingerprint” profiles prepared. All samples contained DNA of both sufficient quality and quantity for genetic analysis. The applicability of this approach is discussed generally in relation to answering problems about the population structure and breeding systems of cetaceans.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 37 (1992), S. 53-59 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The neurovascular responses to noxious electrically evoked axon reflex (EAR) stimulation and iontophoretic application of endothelium-dependent [acetylcholine (ACh)] and independent [sodium nitrite (NaNO2)] vasodilator substances were examined in human forearm skin using laser Doppler flowmetry, before and after repeated topical applications of the neurotoxin capsaicin (chronic capsaicin pre-treatment). Following 3 or 4 days of capsaicin pre-treatment the normal vasodilator response to acute application of capsaicin was significantly reduced as was the EAR response. There were, however, no significant changes in the vasodilator responses to either ACh or NaNO2, suggesting that the neurogenic axon reflex is in series with the endothelial and microvascular smooth muscle mechanisms of vasodilatation. Recovery of normal EAR occurred within 2–4 weeks of cessation of capsaicin pre-treatment.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 25 (1990), S. 3133-3138 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Transmission electron microscopy is used to investigate the tin deposits formed when tin is thermally evaporated on to softened polystyrene substrates, the polystyrenes being softened by heating them to above their glass transition temperature. The structure of the deposit is dependent on the molecular weight of the polystyrene. For low molecular weights, islands of tin grown on the polystyrene surface rapidly “sink” to form a microstructure consisting of subsurface spheres of tin. As the molecular weight is increased the reduced rate at which islands can sink is reflected in the particle size distribution of the deposit.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 26 (1994), S. 92-94 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 26 (1994), S. 219-226 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Deux études sur l'efficacité du Cymelarsan (Rhône Mérieux, France) comme trypanocide ont été réalisées avec des groupes de 5 veaux Frison-Holstein infectés avec un lot indonésien deTrypanosoma evansi et traités 14 jours après l'infection. Au cours de la première étude, 3 groupes ont reçu par voie sous-cutanée (s/c) du cymelarsan aux doses de 0,125, 0,25 et 0,50 mg/kg et au cours de la deuxième étude deux autres ont reçu par voie intramusculaire (i/m) 0,50 et 0,75 mg/kg. La réponse au traitement a été contrôlée chaque jour par la technique de centrifugation de l'hématocrite et chaque semaine par inoculation à souris. ELISA a été utilisée pour mettre en évidence les anticorps et les antigènes de trypanosomes dans les prélèvements de sérums recueillis chaque semaine. L'infection a persisté chez tous les groupes ayant reçu le médicament par s/c tandis que tous ceux traités par i/m ont montré une parasitologie négative jusqu'à 80 jours après le traitement. Les résultats des enquêtes sérologiques ont montré, cependant, la persistance possible de trypanosomose chez les animaux traités à la dose de 0,5 mg/kg par i/m, même si des trypanosomes n'ont pas pu être mis en évidence. Une dose de 0,75 mg/kg administrée par i/m est donc recommandée pour le traitement de la trypanosomose àT. evansi chez les bovins Frison x Holstein.
    Abstract: Resumen Se realizaron dos estudios para demostrar la eficácia de la droga Cymelarsan de Laboratorios Rhone Merieux de Francia, para el tratamiento de ganado infectado conTrypanosoma evansi con grupos de 5 terneros Holstein Frisian infectados experimentalmente con una cepa indonesia deT. evansi y tratados 15 días después. En el primer estudio 3 grupos se inyectaron vía subcutanea (s/c) con Cymelarsan con dosis de 0·125, 0·25 y 0·50 mg/kg y en el segundo estudio 2 grupos fueron inyectados i/m con dosis de 0·50 y 0·75 mg/kg. La respuesta al tratamiento fue monitoreada cada dia mediante la técnica de centrifugación del hematocrito e inoculatión semanal de ratones. La técnica ELISA se utilizó para detectar anticuerpos y antígenos en muestras de suero que fueron colectadas semanalmente. Se detectaron recaídas en todos los grupos inyectados s/c, mientras que los tratados i/m se mantuvieron negativos parasitológicamente hasta 80 días después del tratamiento. Los resultados del examen serológico, sin embargo, sugirieron la posible persistencia de tripanosomas en los animales tratados i/m con dosis de 0·50 mg/kg, aunque los tripanosomas no se pudieron demostrar parasitológicamente. Se recomienda entonces una dosis de 0·75 mg/kg para el tratamiento deT. evansi en ganado Holstein Frisian.
    Notes: Summary Two studies on the efficacy of mel Cy (Cymelarsan, Rhone Merieux, France) for the treatment of cattle infected withTrypanosoma evansi were carried out with groups of 5 Friesian Holstein calves infected with an Indonesian stock ofT. evansi and treated 14 days after infection. In the first study 3 groups were injected subcutaneously with Cymelarsan at dose rates of 0·125, 0·25 and 0·50 mg/kg and in the second study 2 i/m at 0·50 and 0·75 mg/kg. The response to treatment was monitored parasitologically by daily microhaematocrit centrifugation technique and weekly mouse inoculation. Enzyme linked immunosorbent assays were used to monitor trypanosomal antibodies and trypanosomal antigens in serum samples collected weekly. Relapse infections occurred in all the groups given the drug s/c whilst all the animals treated i/m remained parasitologically negative up to 80 days after treatment. Results from serological assays, however, suggested the possible persistence of trypanosome infection in the animals treated at a dose rate of 0·50 mg/kg i/m although trypanosomes could not be demonstrated parasitologically. A dose rate of 0·75 mg/kg administered i/m is recommended, therefore, for the treatment ofT. evansi infection in Friesian Holstein cattle.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Molecular and cellular biochemistry 133-134 (1994), S. 235-243 
    ISSN: 1573-4919
    Keywords: creatine kinase ; mitochondria ; metabolism ; creatine phosphate shuttle ; gene expression ; muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Mitochondrial Creatine Kinase (MtCK) is responsible for the transfer of high energy phosphate from mitochondria to the cytosolic carrier, creatine, and exists in mammals as two isoenzymes encoded by separate genes. In rats and humans, sarcomere-specific MtCK (sMtCK) is expressed only in skeletal and heart muscle, and has 87% nucleotide identity across the 1257 bp coding region. The ubiquitous isoenzyme of MtCK (uMtCK) is expressed in many tissues with highest levels in brain, gut, and kidney, and has 92% nucleotide identity between the 1254 bp coding regions of rat and human. Both genes are highly regulated developmentally in a tissue-specific manner. There is virtually no expression of sMtCK mRNA prior to birth. Unlike cytosolic muscle CK (MCK) and brain CK (BCK), there is no developmental isoenzyme switch between the MtCKs. Cell culture models representing the tissue-specific expression of either sMtCK or uMtCK are available, but there are no adequate developmental models to examine their regulation. Several animal models are available to examine the coordinate regulation of the CK gene family and include 1) Cardiac Stress by coarctation (sMtCK, BCK, and MCK), 2) Uterus and placenta during pregnancy (uMtCK and BCK), and 3) Diabetes and mitochondrial myopathy (sMtCK, BCK, and MCK). We report the details of these findings, and discuss the coordinate regulation of the genes necessary for high-energy transduction.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 22 (1990), S. 101-108 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Un total de 102 bovins sensibles adultes Holstein Frisons, importés dans une région du Paraguay où l'anaplasmose et les babésioses sont enzootiques, ont été immunisés par infection à l'aide d'Anaplasma centrale et des formes atténuées deBabesia bigemina etBabesia bovis obtenues à partir de l'Uruguay. Les résultatas montrent que les formes atténuées des deux espèces deBabésia ont protégé les bovins contre les infestations de terrain hétérologues alors queA. centrale ne confère pas invariablement une protection suffisante contre une infection naturelle deA. marginale.
    Abstract: Resumen Se inmunizaron 102 animales Holstein Friesian, importados a Paraguary, a áreas endémicas de anaplasmosis y babesiosis; estos fueron inmunizados infectándolos conAnaplasma centrale y formas atenuadas deBabesia bigemina yB. bovis obtenidas de Uruguay. Los resultados indicaron, que las formas atenuadas de ambas babesias protegieron el ganado contra descargas heterologas de campo, mientras que elA. centrale no confirió suficiente inmunidad a los mismos.
    Notes: Summary A total of 102 susceptible adult Holstein Friesian cattle imported into an area of Paraguay where anaplasmosis and babesiosis are endemic were immunised by infection withAnaplasma centrale and attenuated forms ofBabesia bigemina andBabesia bovis obtained from Uruguay. The results indicated that the attenuated forms of bothBabesia species protected cattle against heterologous field challenge whereasA. centrale did not invariably confer sufficient protection against a field challenge ofA. marginale.
    Type of Medium: Electronic Resource
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