Biomedical subjects
Publications and source records attributed to M Recasens.
Chloroiodoquine has been implied in numerous cases of myeloneuropathy in Japan, while in other countries although equally frequently used, only a few cases have been reported after treatment with this drug. Studies on the effect of chloroiodoquine in mice of various inbred strains or from crossings between sensitive and insensitive strains demonstrated a genetic predisposition of sensitivity to chloroiodoquine.
The neurotransmitter amines, norepinephrine, dopamine and serotonine have been isolated from Chick notochords. Cholinergic agents produce important modifications in the amount of these amines and of one of their metabolites. The results demonstrate the presence, at a very early stage of development, between the second and the third day of incubation, of biogenic amines and cholinergic receptors.
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The adipose tissue produces a vast number of molecules called adipokines such as leptin, tumoral necrosis factor (TNFalpha), interleukins and adiponectin. Many of the metabolic disturbances associated with obesity and the metabolic syndrome may be due to citokine production by adipocytes. The adipose tissue increases the soluble fractions of TNFalpha leading to a rise in its biological activity. The activation of TNFalpha system causes insulin resistance through different mechanisms such as defects in receptor fosforilation and reduction in insulin-sensitive glucose transporters. TNFalpha is also involved in the pathophysiology of hypertension and dyslipidaemia associated with obesity and insulin resistance. More than one third of interleukin-6 (IL-6) concentrations come from the adipocytes. It has been demonstrated a role for IL-6 in the development of hyperlipidemia, diabetes and hypertension. In contrast to the rest of adipokines, adiponectin is reduced in obesity, diabetes or cardiovascular disease. Adiponectin improves insulin resistance, dyslipidaemia and adhesion to endothelial cells protecting from atherosclerosis development. Thus, adipokines have an important role in the pathophysiology of metabolic syndrome by different mechanisms involving metabolic and vascular effects.
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