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Biomedical subjects

A García de la Fuente

Publications and source records attributed to A García de la Fuente.

7 recordsLinked to original sources
PubMed1991

[Structural changes of the erythrocyte membrane in myelodysplastic syndromes].

Myelodisplasic syndromes (MS) is a group of hematological alterations with well-known clinical, diagnosis, prognosis and therapeutic features. The etiology is still, however, unclear. Following the hypothesis of the lesion of the pluripotential cell, we have studied the composition of red cell membrane in 5 patients afflicted with MS (1 with refractory anemia; 3 refractory anemia plus excessive blast count and 1 chronic myelomonocytic leukemia). The red cells of the patients afflicted with MS has morphological alterations at examination in fresh. The most frequently observed being acanthocytosis and macrocytosis. Structurally, they showed an increase in the cholesterol/phospolipids (C/P) quotient, which was responsible for the increase of the cell area and macrocytosis. Meanwhile, the high level of sphingomyelin (SP) and its depletion of phosphatidil-ethanol-amine (PEA), justify the double population of red cells; one of which being acantocytes and the other has and aquired mutation of the genetic code, which confirms the chromosomic alterations widely described. We feel that our findings confirmed the hypothesis of the effects of an oncogen on the genoma of the mother cell, which can be causal of some acute leukemias and other genetically confirmed alterations.

Aged↗
PubMed1989

Visceral leishmaniasis in patients infected with human immunodeficiency virus (HIV).

In an 8-month period nine patients with human immunodeficiency virus (HIV) infection were diagnosed as having visceral leishmaniasis; all diagnoses were based on cultures (eight from bone marrow and one from the skin). Visceral leishmaniasis developed before full-blown acquired immunodeficiency syndrome (AIDS) in seven patients and at the same time as or after AIDS in the other two patients. Three patients had a history of leishmaniasis. Clinical manifestations and laboratory findings were atypical. Leishmania species were cultured from samples taken from all patients; however, six patients had an insignificant antileishmanial antibody titer and Leishmania amastigotes were not seen in their bone marrow smears. Four isolates were identified by isoenzyme analysis as Leishmania donovani infantum. Five patients died, including two patients who had completed at least one 3-week course of therapy with N-methylglucamine antimoniate. Screening should be done for visceral leishmaniasis in patients with HIV infection who live or travel in areas where the disease is endemic. The diagnosis of visceral leishmaniasis may frequently be missed if cultures are not done.

Acquired Immunodeficiency Syndrome↗