Polyamine as innate immunity modulator

in Pflügers Archiv : European Journal of Physiology (2004), 449

Polyamines as preventive agents of food allergy (CEE, COST 917)

Conference (1998, May)

Polyandrous spawning behaviour in Blicca bjoerkna (L.) : an acces to hybridisation with Abramis brama.

Poster (2004)

Polybaric fractional crystallization of high-alumina basalt parental magmas in the Egersund-Ogna massif-type anorthosite (Rogaland, SW Norway) constrained by plagioclase and high-alumina orthopyroxene megacrysts

in Journal of Petrology (2010), 51(12), 2547-2570

Polycaprolactone-based block copolymers. I - Synthesis by anionic-coordination type catalysts

in Macromolecules (1981), 14(2), 242-246

Bimetallic µ-oxalok oxides are very active anionic coordination type catalysts in the living polymerization of t-caprolactone. These compounds have a well-defined composition which can be systematically ... [more ▼]

Bimetallic µ-oxalok oxides are very active anionic coordination type catalysts in the living polymerization of t-caprolactone. These compounds have a well-defined composition which can be systematically modified. It is proposed that at least half the alkoxy groups of these catalysts are replaced by carboxylate ones and the remaining alkoxy groups by any hydroxyl-terminated polymer PX. These new polymer PX-supported catalysts are powerful tools in tailoring poly(ε-capro1actone) block copolymers with well controlled molecular parameters. [less ▲]

Polycations : relationship between chemical structure and biological behavior

in Morgan, D.; White, A.; Sanchez-Jimenez, F. (Eds.) et al COST 917 Biologically active amines in food. Volume IV (2000)

Polychlorinated Biphenyls affect Histological Appearance of European sea bass (Dicentrarchus labrax) Thyroids

Conference (2010)

Polychlorobiphenyls (PCBs) are well-described endocrine disrupters and of particular interest are effects on thyroid function. We propose here a thorough approach to assess effects of these compounds on ... [more ▼]

Polychlorobiphenyls (PCBs) are well-described endocrine disrupters and of particular interest are effects on thyroid function. We propose here a thorough approach to assess effects of these compounds on the thyroid function of European sea bass (Dicentrarchus labrax). An experimental exposure of sea bass to commercial PCB mixtures has been designed to understand underlying toxicity mechanisms and effects on the thyroid system. After 120 days of exposure histological appearance of thyroid tissue was assessed by light and electron microscopy. The follicle area, perimeter, diameter, length and with of every follicle cross section were interactively measured. The shape of the follicles was described with three dimensionless shape descriptors: roundness, form factor and aspect ratio. The histomorphometrical analysis showed a greater heterogeneity of thyroid follicle diameter and especially higher epithelial cell heights in sea bass exposed to environmental relevant doses of PCB (from 0.3 to 0.9 μg g-1 [7 ICES PCB]). Ultrastructural histological investigations showed that the epithelial cells surrounding the bigger follicles present an higher accumulation of colloid droplets. This was interpreted to be the result of increased stimulation of follicular cells. No differences in shape could be identified among the different treatment groups The size of the follicles and the form of the follicular cells gives an indication of the secretary activity of the gland. These observations support the hypothesis that the contamination of PCB mixtures can induce a hyperactivity of the thyroid tissue. These observations were confirmed by measurements of muscular thyroid hormone concentrations and activity thyroid hormone metabolism. [less ▲]

Polychlorinated dibenzo-p-dioxins and dibenzofurans in livers of an Atlantic seabird, the common guillemot Uria algue: Influence of the general body conditions

in Organohalogen Compounds (2003)

PolyElectrolyte Complexes (PEC’s) tailored to promote the delivery of proteinaceous compounds

Conference (2011, November 16)

Les polyendocrinopathies de type I, aspect épidémiologique

Scientific conference (1993, May 14)