Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P61278 (somatostatin)
 22,083 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Variceal bleeding is one of the most dramatic complications in gastroenterology and has a high mortality rate. Early treatment with vasoactive drugs can save lives when skilled endoscopists are not immediately available. Vasoactive drugs like terlipressin, somatostatin or octreotide are not only indicated as first-choice emergency treatment, but they also increase the success rate of endoscopic treatments. Whereas the efficacy and mechanisms of action of terlipressin to arrest haemorrhage and to improve the disturbed cardiovascular situation of cirrhotic patients, including those with hepatorenal syndrome, are well documented, the efficacy and mechanisms of action of somatostatin and octreotide remain unclear and uncertain. On account of its vasoconstrictive effects on the dilated splanchnic blood vessels, terlipressin reduces blood flow into the portal vein and, thus, reduces portal venous pressure and blood flow through porto-systemic shunts. As a consequence, variceal bleeding is arrested, central and arterial hypovolaemia is corrected, and activation of the renin-angiotensin-aldosterone system as well as the sympathetic nervous system is reduced, leading to lower intrahepatic and intrarenal resistance. The result is an improvement of organ perfusion - including perfusion of the kidneys and the liver - as well as an improvement of the hyperdynamic cardiovascular situation and a better survival rate. Whereas terlipressin has been shown to stimulate kidney function and to prolong survival time in patients with bleeding esophageal varices as well as those with hepatorenal syndrome, no such promising effects were observed with somatostatin or octreotide.
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PMID:[Vasoconstrictive Therapies for Bleeding Esophageal Varices and their Mechanisms of Action]. 1456 99

Splanchnic arterial relaxation is the most important pathology in systemic circulation of portal hypertensive patients. Progressive decline of splanchnic vascular resistance is responsible for development of circulatory dysfunction syndrome (CDS), associated with reduction of effective blood volume within central vascular compartment and compensatory stimulation of vasopressor and natrium retaining hormonal mechanisms. Advanced CDS is characterized by increased cardiac output, tachycardia and low arterial pressure. Complications of CDS have functional nature and comprise: renal failure (hepatorenal syndrome), respiratory failure in context of hepatopulmonary syndrome, cardiac insufficiency produced by portopulmonary hypertension or portal cardiomyopathy, hemorrhages from digestive tract caused by hypertensive portal gastropathy or derangements of brain perfusion. The management of CDS relies on adequate filling of vascular system (albumin), constriction of arterial splanchnic vessels (beta-blocker, analogs of vasopressin and somatostatin), reduction of cardiac output (beta-blocker) and giving support to local vasoprotective mechanisms (prostaglandins, nitric oxide, blockade of ET-A receptors).
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PMID:[Circulatory dysfunction syndrome associated with liver cirrhosis]. 1619 May 66

Hepatorenal syndrome is a form of acute or sub-acute renal failure which develops in patients with chronic liver disease. In contrast to other forms of acute renal failure it may be reversible using pharmacological agents. The pathogenesis involves splanchnic vasodilatation and intense renal vasoconstriction. Increasing intravascular volume and prolonged treatment with vasoconstrictor drugs reverses renal failure in a significant proportion of patients. Agents currently used include the vasopressin analogues terlipressin and the alpha1-adrenoceptor agonist midodrine. The somatostatin analogue octreotide has been used in combination therapy but is ineffective as monotherapy. Intravenous albumin is an important adjunctive treatment both in the prevention and treatment of hepatorenal syndrome. Increasing intravascular volume using TIPS (transjugular intrahepatic stent shunt) is effective in some patients and may be useful in maintaining patients who have initially responded to pharmacological therapy. Despite improvements in survival, long term prognosis is still poor and generally depends on the degree of reversibility of the underlying liver disease or access to liver transplantation.
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PMID:Management of hepatorenal syndrome. 1853 34

While the canonical function of somatostatin (SST) is to inhibit the secretion of growth hormone, it has a number of other physiologic effects that are less widely appreciated. Octreotide, an analog of SST, is not uncommonly used in the critical care setting, particularly for the treatment of variceal hemorrhage. Herein, we discuss the biology and pharmacology of SST, octreotide, and other SST analogs. We also review the evidence behind their use in esophageal variceal bleeds, hepatorenal syndrome, hypoglycemia due to sulfonylurea poisoning, and chylous pleural effusions.
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PMID:Octreotide: a drug often used in the critical care setting but not well understood. 2429 27

Among the complications of cirrhosis, hepatorenal syndrome (HRS) is characterized by having the worst survival rate. HRS is a disorder that involves the deterioration of kidney function caused primarily by a systemic circulatory dysfunction, but in recent years, systemic inflammation and cirrhotic cardiomyopathy have been discovered to also play an important role. The diagnosis of HRS requires to meet the new International Club of Ascites-Acute Kidney Injury (ICA-AKI) and Hepatorenal Syndrome-Acute Kidney Injury (HRS-AKI) criteria after ruling out other causes of kidney injury. At the time of diagnosis, it is important to start the medical treatment as soon as possible where three types of vasoconstrictors have been recognized: vasopressin analogs (ornipressin and terlipressin), alpha-adrenergic agonists (norepinephrine and midodrine) and somatostatin analogues (octreotide); all should be combined with albumin infusion. Among them, terlipressin and albumin are the first lines of treatment in most cases, although terlipressin should be monitor closely due to its adverse events. The best treatment of choice is a liver transplant, because it is the only definitive treatment for this disease.
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PMID:An Integrated Review of the Hepatorenal Syndrome. 3284 2