retrorsine/fibrosis

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Reparative Effects of Astaxanthin-Hyaluronan Nanoaggregates against Retrorsine-CCl₄-Induced Liver Fibrosis and Necrosis.

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Astaxanthin (Asta), a xanthophyll carotenoid, has been reported to be a strong antioxidative agent and has anti-inflammatory, antitumor and free radical-scavenging activities. However, inadequate stability and water solubility results in its low bioavailability. This study incorporated Asta into

An animal model for copper-associated cirrhosis in infancy.

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In Indian childhood cirrhosis (ICC) and related disorders of infancy, hepatic copper overload is associated with cirrhosis. Since copper administration alone has not been shown to induce cirrhosis in animals, synergy between copper and a second hepatotoxin has been suggested. This study investigates

Retrorsine in breast milk influences copper handling in suckling rat pups.

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OBJECTIVE To explore the hypothesis that a second xenobiotic agent is required with excess copper to produce Indian Childhood Cirrhosis, this study investigated the effect of the pyrrolizidine alkaloid retrorsine fed to the mother during the suckling period upon the serial changes in neonatal copper

Synergistic liver toxicity of copper and retrorsine in the rat.

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To investigate the possible synergy between copper and retrorsine (a pyrrolizidine alkaloid) as a cause of Indian Childhood Cirrhosis, four groups of male Wistar rats were fed the following diets from weaning: A. Normal diet; B. Copper loaded (2 g CuSO4/kg diet); C. Retrorsine supplemented (Expt

[Toxic effects in rabbits after immunization against the pyrrolizidine alkaloid retrorsine].

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Six rabbits were immunized against the pyrrolizidine alkaloid retrorsin, conjugated to bovine serum albumin. Seven i.v. inoculations were distributed over a period of half a year. The total antigen dose differed between animals. Towards the end of the experiment all animals (except 2 receiving the

Assessment of animal experimental models of toxic liver injury in the context of their potential application as preclinical models for cell therapy.

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Preclinical animal models allow to study development and progression of several diseases, including liver disorders. These studies, for ethical reasons and medical limits, are impossible to carry out in human patients. At the same time, such experimental models constitute an important source of

The toxicity of Senecio inaequidens DC.

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This study was designed to confirm the toxicity of a plant implicated in an outbreak of poisoning of stock in Frankfort, Free State Province, South Africa. Cows died acutely after being introduced into a camp, where an abundant, green shrublet was noted to be heavily grazed. This plant was

Hepatotoxicity associated with pyrrolizidine alkaloid (Crotalaria spp) ingestion in a horse on Easter Island.

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Since 1984, a significant number of privately owned and feral horses on Easter Island have died of a syndrome consisting of progressive anorexia, weight loss, obtundation, and other central nervous system abnormalities. A single horse experiencing clinical signs of the reported syndrome was

Hepatocyte differentiation of human fibroblasts from cirrhotic liver in vitro and in vivo.

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BACKGROUND Mesenchymal stem cells (MSCs) and fibroblasts have intimate relationships, and the phenotypic homology between fibroblasts and MSCs has been recently described. The aim of this study was to investigate the hepatic differentiating potential of human fibroblasts in cirrhotic

Hepatocytes from fibrotic liver possess high growth potential in vivo.

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Hepatocyte transplantation is effective for treating liver failure, but healthy donors as a source of hepatocytes are quite limited. The livers of patients with hepatic fibrosis could be an alternative source; however, few reports have examined the nature of hepatocytes from fibrotic livers

Toxicity of Senecio vernalis to laying hens and evaluation of residues in eggs.

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Diets with 0.0, 0.5,2.0, or 4.0% ground-aerIal parts of Senecio vernalis were fed to groups of 10 laying hens for 210 d. Plant alkaloid content was 0.14% with 8.57% in the basic form and 91.43% in the N-oxide form. Specific alkaloids were senecionin (66.65%), senecivernin (10.37%), seneciphylline

Fetal Liver Stem/Progenitor Cell Transplantation: A Model to Study Tissue Mass Replacement and Cell-Based Therapies.

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Liver transplantation is the only therapeutic treatment for patients with end-stage liver diseases. However, donor organ scarcity is the major limitation, and therefore, alternative strategies are urgently needed. The ultimate goal for successful cell-based therapies is the ability of transplanted

Fibrogenic potential of human multipotent mesenchymal stromal cells in injured liver.

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Multipotent mesenchymal stromal cells (MSC) are currently investigated clinically as cellular therapy for a variety of diseases. Differentiation of MSC toward endodermal lineages, including hepatocytes and their therapeutic effect on fibrosis has been described but remains controversial. Recent

Senecio grisebachii Baker: Pyrrolizidine alkaloids and experimental poisoning in calves.

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The main objectives of this study were to determine the 1,2-dehydropyrrolizidine alkaloid (DHPA) content in Senecio grisebachii Baker (Compositae), to experimentally demonstrate its toxicity in calves and to describe the main clinical and pathological findings of this toxicity. S. grisebachii plants

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