BACKGROUND Flow-mediated dilatation (FMD) of the peripheral arteries may be impaired in chronic heart failure (CHF), and this could contribute to the increased peripheral resistance and exercise intolerance that occur with this disease. Physical exercise improves the FMD of large conduit arteries in CHF, but whether a similar impairment also occurs in smaller arteries is unknown. The mechanisms...

The free-living nematodes Eumonhystera borealis n. sp., Sphaerolaimus occidentalis n. sp., and S. gracilis de Man 1876 from Bothnian Bay in the northern Baltic Sea are described and illustrated. Eumonhystera borealis n. sp. differs from other species by its small body size (314-393 mum), narrow body (a = 37-49), and large anterior amphids. In Sphaerolaimus occidentalis n. sp. the amphids are po...

Presacral abscess formation due to rectal stump insufficiency following Hartmann procedure is very rare complication. If the abscess cavity is large, it might delay the reversal of the stoma and will probably result in a devastating future functioning of the neorectum. Moreover, very invasive treatments will be required in order to prevent severe septic complications. We present the case of a 5...

Euglena gracilis, Nutrition, Magnesium Deficiency, Magnesium Transport In order to obtain a model which allows to directly study Mg2+ influx into the cell, Mg2+ deficiency was induced in the unicellular photoautotrophic flagellate Euglena gracilis. Lack of Mg2+ in the culture medium leads to a number of morphological, biochemical, and physio­ logical changes in Euglena gracilis. The rate of cel...

JOSÉ LUIS SANTILLÁN-TORRES, ARIANE ATTEIA, M. GONZALO CLAROS, ANDRZEJ SZCZEPANIAK and DIEGO GONZÁLEZ-HALPHEN Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510 Mexico City, Mexico, Institute of Botany III, University of Düsseldorf, 40225 Düsseldorf, Germany, Depto. de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain...