Efficacy of L-Ornithine-L-Aspartate in Acute Hepatic Encephalopathy

2014-08-27 03:16:57 | BioPortfolio


Hepatic encephalopathy is caused by the effects on the brain of substances that under normal circumstances are efficiently metabolized in the liver. The hyperammonemia is the main factor responsible for the development of hepatic encephalopathy. In patients with cirrhosis, the reduction in hepatocellular function and generation of portosystemic shunts contribute to increase serum ammonium. The current therapeutic approaches, are aimed at reducing blood ammonium levels.

Administration of the non-absorbable disaccharides, have become standard treatment of hepatic encephalopathy.There are no adequate clinical trials comparing the efficacy of L-Ornithine-L-Aspartate (LOLA) infusion against lactose enemas in the treatment of acute hepatic encephalopathy.


The main impact of hepatic encephalopathy in patients with cirrhosis is not related to costs, but its association with decreased survival and quality of life and should therefore clearly established the effectiveness of therapeutic interventions used in this disorder.

At the end of the nineteenth century to the ammonium was identified as the main agent responsible for the development of the syndrome of hepatic encephalopathy. Since then, reduced nitrogen compounds from the intestine are considered the main therapeutic measure. On this conceptual base, nonabsorbable disaccharides are the first line therapy in hepatic encephalopathy.

Current knowledge indicates that other organs such as muscle, brain and kidney are involved in the generation of ammonium, which has set the pace for the development of new treatments, able to act systemically in metabolism and elimination of ammonia . L-ornithine L-aspartate (LOLA) lowers ammonium concentrations in animal and humans models with hyperammonemia. There are no adequate clinical trials comparing the efficacy of LOLA infusion against lactose enemas in the treatment of acute hepatic encephalopathy.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Hepatic Encephalopathy


L-ornithine-L-aspartate, Lactose


Centro Regional para el Estudio de las Enfermedades Digestivas, Facultad de Medicina y Hospital Universitario José Eleuterio Go
Nuevo León




Centro Regional para el Estudio de las Enfermedades Digestivas

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:16:57-0400

Clinical Trials [649 Associated Clinical Trials listed on BioPortfolio]

Therapeutic Efficacy of Oral L-Ornithine-L-Aspartate on Minimal Encephalopathy

The study aimed to assess the effectiveness and safety of L-ornithine-L-aspartate in the management of hepatic encephalopathy.

Efficacy of L-Ornithine-L-Aspartate in Cirrhotics With Hepatic Encephalopathy

The purpose of this study is to determine whether L-Ornithine L-Aspartate is effective for the improvement of Overt Hepatic Encephalopathy.

Efficacy of Combined Oral L-Ornithine-L-Aspartate and Lactulose in Patients With Hepatic Encephalopathy

Hypothesis: Is the combination of oral L-ornithine-L-aspartate and lactulose more efficacious than oral lactulose alone in treatment of hepatic encephalopathy? Study design; Randomized, do...

Effect of Lactose in Patients With Chronic Liver Disease and Minimal Hepatic Encephalopathy

Introduction: Mortality due to chronic liver disease is among the first five causes of mortality related to digestive tract and liver diseases in patients on productive age. One of the mos...

Therapeutic Efficacy of L-Ornithine L-Aspartate Infusion in Patients With Acute Liver Failure

The purpose of the study is to determine whether L-Ornithine L-Aspartate infusion improves the survival of patients with acute liver failure.

PubMed Articles [2238 Associated PubMed Articles listed on BioPortfolio]

Acetyl-L-carnitine for patients with hepatic encephalopathy.

Hepatic encephalopathy is a common and devastating neuropsychiatric complication of acute liver failure or chronic liver disease. Ammonia content in the blood seems to play a role in the development o...

FXR-Mediated Cortical Cholesterol Accumulation Contributes to the Pathogenesis of Type A Hepatic Encephalopathy.

Hepatic encephalopathy is a serious neurologic complication of acute and chronic liver diseases. We previously showed that aberrant bile acid signaling contributes to the development of hepatic enceph...

A Head CT is Unnecessary in the Initial Evaluation of A Cirrhotic Patient with Recurrent Hepatic Encephalopathy.

The evaluation to determine the cause of hepatic encephalopathy consists primarily of laboratory testing to rule out infections and metabolic causes. Despite lack of evidence, it is a common practice ...

Serum Electrolyte Levels and Outcomes in Patients Hospitalized with Hepatic Encephalopathy.

Serum electrolyte derangements are common in patients with decompensated cirrhosis hospitalized for hepatic encephalopathy. There are limited data describing the association between electrolyte levels...

Guidelines for the diagnosis and management of hepatic encephalopathy in cirrhosis.

Current guideline developed by the Chinese Society of Hepatology on the management of hepatic encephalopathy in cirrhosis is grounded on the published evidences and panelists' consensus. This guidelin...

Medical and Biotech [MESH] Definitions

The condition resulting from the absence or deficiency of LACTASE in the MUCOSA cells of the GASTROINTESTINAL TRACT, and the inability to break down LACTOSE in milk for ABSORPTION. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion (DYSPEPSIA) to severe DIARRHEA. Lactose intolerance may be an inborn error or acquired.

A urea cycle enzyme that catalyzes the formation of orthophosphate and L-citrulline (CITRULLINE) from CARBAMOYL PHOSPHATE and L-ornithine (ORNITHINE). Deficiency of this enzyme may be transmitted as an X-linked trait. EC

A synthetic disaccharide used in the treatment of constipation and hepatic encephalopathy. It has also been used in the diagnosis of gastrointestinal disorders. (From Martindale, The Extra Pharmacopoeia, 30th ed, p887)

A measure of a patient's ability to break down lactose.

Plasmids which determine the ability of a bacterium to ferment lactose.

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