Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ana María Stella"'
Autor:
Francisca F. del Campo, María Cristina Zaccaro, Mónica Storni, Ana María Stella, Juan C. Bossio, Marian Tanuz, Gloria Zulpa, Youness Ouahid
Publikováno v:
International Journal of Environmental Analytical Chemistry. 91:525-536
Microcystis is one of the most common bloom-forming cyanobacteria genera in diverse ecosystems. More than 80% of its strains are toxic, mainly due to their ability to produce metabolites known as microcystins (MC). Here we report on a M. aeruginosa b
Autor:
M. Guolo, Alcira Batlle, L. Pataro, M. Biscoglio, C. Franco, Ana María Stella, R. E. De Salamanca, C. Machalinski
Publikováno v:
Nephron Experimental Nephrology. 7:236-241
Among the abnormalities in erythrocyte porphyrin metabolism already described in patients with chronic renal failure on hemodialysis, a decrease in blood aminolevulinate dehydratase activity has been reported, suggesting the presence in uremic plasma
Publikováno v:
The International Journal of Biochemistry & Cell Biology. 28:311-317
Hemodialysed patients with no history of porphyria may present neurological symptoms similar to those seen in acute porphyrias. Porphyria has been associated with an increase in plasma levels of 5-aminolevulinic acid and porphobilinogen. Our aim was
Autor:
Gloria Zulpa de Caire, Mónica Storni de Cano, María Cristina Zaccaro, Carmen Salazar, Ana María Stella
Publikováno v:
Environmental toxicology. 16(1)
The effect of Pb2+ on growth, tetrapyrrole photosynthetic pigment content, total free porphyrin, and 5-aminolevulinate dehydratase (ALA-D) activity of a cyanobacterium, Microchaete tenera, and its ability to sequester Pb2+ from the culture medium wer
Publikováno v:
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry. 94:635-639
1. 1. With the aim of finding a possible relationship between the known dimorphism phenomenon existing in the fungus Mucor rouxii and the biosynthesis of respiratory pigments, the activity of aminolevulic acid synthetase (ALA-S) and ALA-dehydratase (
Autor:
Eva A.Wider De Xifra, Ana María Stella, Diana M. Stafforini, Alcira M. Del C. Batlle, Cesar F. Polo
Publikováno v:
International Journal of Biochemistry. 12:757-760
1. 1. By chromatography through Sephadex G-200 of increasing amounts of partially purified pig liver ALA-D, different profiles were obtained, showing that species of molecular weights ranging from 140,000 to 560,000 might exist in equilibrium, but th
Autor:
Ana María Stella, S. Chinarro, Alcira M. Del C. Batlle, Susana G. Afonso, Rafael Enríquez de Salamanca
Publikováno v:
International Journal of Biochemistry. 18:143-147
1. 1. The effects of light and porphyrins on the activity of red cell uroporphyrinogen decarboxylase were studied. 2. 2. Photoinactivation of uroporphyrinogen decarboxylase was dependent on uroporphyrin concentration, irradiation time and temperature
Publikováno v:
Plant Science Letters. 11:87-92
Highly stable selective adsorbents for δ-aminolaevulinate dehydratase (ALA-D) were prepared by attaching the substrate to agarose beads, either directly or through an extension arm. Columns containing these biospecific adsorbents can completely bind
Autor:
Eva A.Wider De Xifra, Pedro H. Magnin, Mario Lenczner, Alcira M. Del C. Batlle, Ana María Stella
Publikováno v:
International Journal of Biochemistry. 12:873-877
1. 1. A family investigation was performed in eleven cases of Porphyria Cutanea Tarda (PCT). 2. 2. By using clinical findings, quantitative measurements and thin layer chromatography (TLC) of urinary porphyrins, overt and subclinical PCT patients hav
Publikováno v:
Plant Science Letters. 11:93-98
Soybean callus δ-aminolaevulinate synthetase (ALA-S) has been covalently attached to Sepharose 4B. The optimal conditions for binding have been determined. The water-insoluble ALA-S retained 40% of the activity of the original soluble preparation, t