ABSTRACT
Alpha lipoic acid (ALA, thioctic acid), among other actions, is an essential coenzyme in the conversion of pyruvate to acetyl co-enzyme A. Therefore, it is necessary for the production of energy for aerobic organisms. Scientists have found that it can be used medically to help regenerate liver tissue, reverse the complications of diabetes mellitus, slow or stop the growth of cancer cells, and chelate heavy metals, among other actions. In this article, the authors describe the cellular mitochondrial damage from excessively high doses of this beneficial agent.
El alfa-ácido lipoico (ALA, ácido tióctico), entre otras acciones, es una coenzima esencial en la conversión del piruvato en acetil coenzima A. Por lo tanto, es necesario para la producción de energía para los organismos aerobios. Los científicos han descubierto que puede ser utilizado médicamente para ayudar a regenerar el tejido hepático, invertir las complicaciones de la diabetes mellitus, ralentizar o detener el crecimiento de células cancerígenas y frenar la toxicidad de los metales pesados, entre otras acciones. En este artículo, los autores describen el daño mitocondrial celular causado por dosis excesivamente altas de este agente beneficioso.
ABSTRACT
Relata-se necrose hepatocelular em suínos após consumo de ração que continha grãos de sorgo-granífero (Sorghum bicolor) acidentalmente contaminado com sementes de Crotalaria spectabilis. Morreram 76 suínos em quatro propriedades no município de Juscimeira, MT. Os sinais clínicos iniciaram-se 24-48 horas após o consumo da ração contaminada e foram caracterizados por depressão, letargia, apatia, inapetência, vômito, mucosas ictéricas ou pálidas, ascite, decúbito esternal, decúbito lateral com movimentos de pedalagem e convulsões, a evolução clínica foi de 48-60 horas seguida de morte. As Principais alterações macroscópicas foram fígado aumentado de tamanho com evidenciação do padrão lobular, ascite e hidrotórax com líquido de coloração amarelo avermelhado contendo filamentos com aspecto de fibrina, linfonodos aumentados e edema pulmonar interlobular. A doença foi reproduzida utilizando-se 16 suínos divididos em seis grupos que receberam sementes de C. spectabilis em diferentes doses. Necrose hepatocelular ocorreu em sete suínos, sendo dois que receberam doses diárias 2,5g/kg e cinco que receberam doses únicas de 5,0 e 9,5g/kg. Dez doses diárias de 0,5 e 1,25g/kg causaram fibrose hepática.
Hepatocellular necrosis are reported in swine after consumption of diets containing grains of "sorgo-granífero" (Sorghum bicolor) accidentally contaminated with Crotalaria spectabilis seeds in the municipality of Juscimeira, MT. Clinical signs began 24-48 hours after consumption of contaminated ration and were characterized by depression, lethargy, apathy, loss of appetite, vomiting, pale or jaundiced mucous membranes, ascites, lateral recumbency, the lateral position with paddling and convulsions, clinical outcome was 48-60 hours followed by death. 76 pigs died in four properties. The main gross lesions were liver increased in size and lobular illustration with red-brown central areas interspersed with yellowish areas, ascites and hydrothorax with reddish-yellow liquid containing filaments with aspect of fibrin, enlarged lymph nodes and interlobular pulmonary edema. The disease was experimentally reproduced with 16 pigs divided into six groups that received seeds of C. spectabilis in different doses. Hepatocellular necrosis occurred in seven pigs, two of which received daily doses of 2.5g/kg and five who received single doses of 5 and 9.5g/ kg. Ten daily doses of 0.5 and 1.25g/kg caused liver fibrosis.
Subject(s)
Animals , Crotalaria/toxicity , Massive Hepatic Necrosis/veterinary , Plants, Toxic/poisoningABSTRACT
In this study, acute liver failure was induced in rats by d-galactosamine (D-GalN) injection. Intraperitoneal injection,24 h later, of viable syngeneic hepatocytes apparently increased the survival rate of these animals (48%), while transplantation of non-viable hepatocytes was ineffective and even showed a certain degree of clotting disorders.A microscopical observation of the liver specimens and estimation of DNA synthesis cy 3H-TdR suggest that viable hepatocellular transplantation may minimize the hepatic injury and promote hepatic cell regeneration.
