MARCOS S. DREON¹, HORACIO HERAS^1,2, RICARDO J. POLLERO¹

BIOCELL, Vol.30, Suppl.S, pp. 359-365, 2006

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C. GAMARRA-LUQUES, B.C. WINIK, I.A. VEGA, E.A. ALBRECHT, N.M. CATALAN, A. CASTRO-VAZQUEZ

BIOCELL, Vol.30, Suppl.S, pp. 345-357, 2006

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PABLO R. MARTÍN*, CLAUDIO G. DE FRANCESCO**

BIOCELL, Vol.30, Suppl.S, pp. 337-343, 2006

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ALEJANDRA L. ESTEBENET^✝, PABLO R. MARTÍN, SILVANA BURELA

BIOCELL, Vol.30, Suppl.S, pp. 329-335, 2006

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BIOCELL, Vol.30, Suppl.S, pp. 325-375, 2006

Abstract This article has no abstract. More >

BIOCELL, Vol.30, Suppl.S, pp. 501-529, 2006

Abstract This article has no abstract. More >

NÉSTOR CURVETTO1^1,2, PABLO MARINANGELI^1,2, GABRIELA MOCKEL²

BIOCELL, Vol.30, No.3, pp. 497-500, 2006, DOI:10.32604/biocell.2006.30.497

Abstract The micropropagation of Lilium longiflorum requires adequate equipment which may not be afforded by small laboratories or producers. In this work we compared traditional methodology with a protocol that included easily available elements to sterilize materials and culture media, together with addition of hydrogen peroxide (H₂O₂ ) into the nutrient media as chemical sterilizer. A series of H₂O₂ concentrations (0.005, 0.010, 0.015 and 0.020% p/v) was used to control contamination during in vitro establishment and subsequent cultivation; the explant organogenic response was also examined and compared to the traditional micropropagation technique. The level of culture contamination was within… More >

KARINA M. MICHETTI^1,2, PATRICIA I. LEONARDI^1,3, EDUARDO J. CÁCERES^1,4

BIOCELL, Vol.30, No.3, pp. 491-496, 2006, DOI:10.32604/biocell.2006.30.491

Abstract Nonspecific acid phosphatases are a group of enzymes whose activity increases the availability of exogenous and endogenous orthophosphate either through extra- or intracellular hydrolysis of phosphate compounds. Our study demonstrates the activity of acid phosphatases in the filamentous freshwater alga Stigeoclonium tenue. These enzymes were detected following a cerium-based method in which cerium was used as an orthophosphate-capture reagent. In thalli from S. tenue from the natural environment, acid phosphatases were found in the longitudinal cell wall, plasmalemma, and vacuole. In thalli from Bold’s Basal Medium culture, these enzymes were found mainly in the plasmalemma; they were More >

GREGOR KOSEC^*¶, VANINA ALVAREZ^**¶, JUAN J. CAZZULO**

BIOCELL, Vol.30, No.3, pp. 479-490, 2006, DOI:10.32604/biocell.2006.30.479

Abstract Trypanosoma cruzi, the parasite causing Chagas disease, contains a number of proteolytic enzymes. The recent completion of the genome sequence of the T. cruzi CL Brener clone suggests the presence of 70 cysteine peptidases, 40 serine peptidases (none of them from the chymotrypsin family), about 250 metallopeptidases (most leishmanolysin homologues), 25 threonine peptidases, and only two aspartyl peptidases, none of them from the pepsin family. The cysteine peptidases belong to 7 families of Clan CA, 3 families of Clan CD, and one each of Clans CE and CF. In Clan CA, the C1 family is represented by More >

MARISA L. ZALLOCCHI^*1, MARIA C. DAMASCO¹, JUAN C. CALVO^1,2, CARLOS P. LANTOS¹, LAURA B. MATKOVIC¹

BIOCELL, Vol.30, No.3, pp. 469-477, 2006, DOI:10.32604/biocell.2006.30.469

Abstract Prior to this work, we found that adrenal as well as extra-adrenal factors activate the response of renal 11ß-hydroxysteroid dehydrogenase 2 to stressful situations. These results -showing ways through which the organism hinders the pathological occupation of mineralocorticoid receptors by glucocorticoids leading to sodium retention and hypertension- prompted the present study on the nature of the above-mentioned extraadrenal factors. Serotonin was chosen because of its properties as a widely distributed neurohormone, known to interact with glucocorticoids at many sites, also exhibiting increased levels and effects under stressful situations. We studied serotonin effects on 11ß-hydroxysteroid dehydrogenase… More >