Biomedical subjects

L Ballesteros

Publications and source records attributed to L Ballesteros.

At least 19 recordsLinked to original sources

PubMed1992

Post-Chernobyl accident radioactivity measurements in the Comunidad Autonoma de Valencia, Spain.

Increased atmospheric radioactivity after the accident in Chernobyl was first detected on air filters. Measurements were begun in Valencia on May 2, 1986, with the maximum activity being observed around May 3-4, 1986. As a consequence of this accident, annual campaigns of measurements on migrating birds (several species of aquatic birds and song-thrushes) were started. The data corresponding to the campaign immediately after the accident (1986/87) show a generalized contamination (approximately 50% of the measured specimens). Significant levels of 134Cs, 137Cs and 110Agm were found. It is important to note that 110Agm is only present in Aythya ferina. In the successive campaigns in 1988/89 and 1989/91 few samples were found to be contaminated and only 137Cs was identified. Strontium-90 was measured and identified in some specimens, mainly in their bones.

Accidents↗

PubMed1981

Hemostatic defects in the Bernard-Soulier syndrome. Presentation of one case and literature review.

Bernard-Soulier's syndrome (BSS) is a familial hemorrhagic disease that is not very common, but its hemostatic defects have not been explained satisfactorily. In this paper the authors comments on the lack of Ib and Is glycoproteins in the platelet membrane, which is the basic characteristic of platelets with BSS. These proteins contain large amounts of sialic acid and have been identified as the absent membrane marker in said patients. The role played by these alterations in the BSS platelets leads us to suppose that there are no other structural and functional defects in such platelets, other than those related to the absence of membrane marker mentioned. From the above, a discussion follows on the similarity of BSS with von Willebrand's disease and it is concluded that the BSS is due to a scarce molecular concentration of Ib and Is glycoproteins in the platelet membrane and not to a functional defect of such molecules. The case described in this paper is the first one to be published in this country and was studied using the most useful and recommendable tests known at present, to this end.

Adult↗

PubMed1979