Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: UMLS:C0027497 (nausea)
23,468 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Isolated ACTH deficiency is an uncommon cause of secondary adrenocortical insufficiency and accompaniment with primary empty sella has been reported in several cases. We present a case of isolated ACTH deficiency associated with empty sella. A sixty-two year old woman was admitted to our endocrine clinic with complaints of weakness, fatigue, weight loss, nausea, vomiting, and lack of appetite for about one month. Physical examination indicated orthostatic hypotension and epigastric tenderness. Laboratory investigations revealed hypoglycemia, hyponatremia and anemia, in addition low plasma cortisole and ACTH levels. Serum cortisole responses to short and prolonged ACTH stimulation were tested and partial and accurate responses were obtained, respectively. Plasma ACTH and serum cortisole levels failed to respond after intravenous injection of human corticotropin releasing hormone. Other hypophysial hormone levels were within the normal reference ranges. Although cranial and abdominal computerized tomography images were evaluated as normal, cranial magnetic resonance imaging of the pituitary gland revealed 'primary empty sella turcica'. Replacement therapy with methylprednisolon resulted in the improvement of hypoglycemia, hyponatremia and clinical symptoms. Based on these results, the patient was diagnosed as isolated ACTH deficiency and was scheduled for follow up by our outpatient clinic. Our report is consistent with other reports pointing out that primary empty sella may be responsible for pathogenesis of isolated ACTH deficiency.
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PMID:May primary empty sella turcica be a cause of isolated ACTH deficiency? A case report and the review of related literature. 1806 31

(1) When type 2 diabetes is inadequately controlled with oral antidiabetic therapy, one option is to add subcutaneous insulin injections (or to accept less stringent glycaemic control). However, since the effects of adding insulin have only been evaluated in the short-term, effects on long-term clinical outcomes remain unknown. (2) Exenatide, a drug belonging to a new pharmacological class (incretin analogues), is marketed as a subcutaneously administered adjunct to inadequately effective oral antidiabetic therapy in adults with type 2 diabetes. (3) Three placebo-controlled trials lasting 7 months showed that adding exenatide to metformin and/or a glucose-lowering sulphonylurea yielded an HbA1c level of 7% or less in about 40% of patients treated with exenatide 10 micrograms twice a day, versus about 10% of patients on placebo. The potential impact of exenatide on morbidity and mortality is not known. (4) In two trials versus insulin glargine and in one trial versus insulin aspart (+ isophane insulin), exenatide was as effective as the various insulins in controlling HbA1c levels. (5) During clinical trials, patients receiving exenatide lost an average of about 2 kg after 6 months, while insulin was associated with a weight gain of about 2 kg. (6) There was a similar incidence of hypoglycaemia with exenatide and insulin. In patients treated with exenatide, concomitant use of glucose-lowering sulphonylurea increases the risk of hypoglycaemia. (7) More than half of patients on exenatide experienced nausea, versus fewer than 10% of patients on insulin glargine. (8) The long-term consequences of the presence of antiexenatide antibodies on the effectiveness of treatment are not known. (9) Exenatide is administered in two subcutaneous injections a day, at fixed doses. Insulin is administered in one or several injections a day, at doses adjusted to self-monitored blood glucose levels. (10) Adding insulin rather than exenatide is a better option in general when oral antidiabetic therapy fails in patients with type 2 diabetes, as we have more experience with insulin and there is no evidence of important advantages with exenatide. The latter should be reserved for situations in which weight gain is a major problem.
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PMID:Exenatide: new drug. Type 2 diabetes for some overweight patients. 1808 91

Postprandial hyperglycaemia and spikes have deleterious effects on Insulin secretion and sensitivity. The present study was undertaken to evaluate the efficacy, safety and tolerability of miglitol 50 mg three times daily for 12 weeks in 129 patients with type 2 diabetes mellitus, inadequately managed with diet and exercise therapy alone for 3 months after obtaining their written informed consent. The primary efficacy variables were per cent change from baseline at week 12 in fasting and postprandial plasma glucose concentrations and glycosylated haemoglobin (HbA(1C)) levels. After treatment at the end of 12 weeks mean reduction in fasting plasma glucose levels was 35.7% and 44.33% in postprandial plasma glucose levels while the mean HbA(1C) was significantly reduced by 0.88% (p<0.05). Total cholesterol, HDL, LDL and TC/HDL ratio did not showed any significant change but a non-significant reduction in triglyceride levels was observed in some patients. The mean body mass index was reduced non-significantly by 8% from baseline values. A total 19.5% patients treated with miglitol reported adverse events like flatulence, abdominal pain, nausea/vomiting, diarrhoea and dyspepsia. Only one patient reported hypoglycaemia. The results of the present study indicate that miglitol reduces fasting and postprandial plasma glucose levels, Improving glycaemic control, which is reflected in a reduced HbA(1C) level in patients with type 2 diabetes mellitus. It could be a useful first-line therapy in patients with type 2 diabetes mellitus inadequately controlled by diet alone and as adjuvant therapy in patients who are inadequately controlled with diet and sulfonylureas.
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PMID:Evaluation of the efficacy, safety and tolerability of miglitol in adult Indian patients with uncomplicated type 2 diabetes mellitus. 1823 83

Type 2 diabetic patients who have not achieved adequate glucose control at the maximum tolerated doses of their oral therapies currently have no alternative other than insulin. A new approach has been developed, using the glucoregulatory properties of the intestinal incretin hormone glucagon-like peptide-1 (GLP-1). This has resulted in the development of a new therapeutic class, the incretin mimetics, of which exenatide is the first to have been approved. Exenatide can bind to the endogenous receptors of GLP-1 and mimic its glucoregulatory actions. It improves glycemic control by acting on the key organs involved in glucose homeostasis: it stimulates insulin secretion and suppresses glucagon secretion in a glucose-dependent way, slows gastric emptying and reduces food intake. It consequently produces significant reductions in fasting and postprandial hyperglycemia. Various clinical studies, both versus placebo and versus insulin, have shown a significant decrease in HbA1c levels (of about 1%), accompanied by weight loss, in patients treated with exenatide. Exenatide efficacy is sustained and all the studies have shown a comparable tolerance profile. The most frequently reported adverse effects were nausea and hypoglycemia when the patient received concomitant sulfonylurea therapy. The aim of this article is to summarize main clinical data on exenatide and to discuss its position in current therapeutic strategy.
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PMID:Exenatide: its position in the treatment of type 2 diabetes. 1853 26

Exenatide (Byetta) is a synthetic derivative of exendin-4 and an agonist of receptors of glucagon-like peptide-1 (GLP-1). It is resistant to the rapid inactivation by dipeptidylpeptidase-4 and acts as an incretin mimetic. It stimulates insulin secretion by the B cell in a glucose-dependent manner whereas it inhibits glucagon secretion. Exenatide improves mainly postprandial glucose concentrations and lowers glycated haemoglobin (HbA(1c)) levels, without being directly responsible for hypoglycaemia or requiring mandatory home blood glucose monitoring. Furthermore, it slows down gastric emptying and promotes sustained body weight reduction, even in absence of frequently reported nausea following treatment initiation. Exenatide is recommended and reimbursed in Belgium for the treatment of type 2 diabetes, in combination with metformin and a sulfonylurea, in patients not adequately controlled with maximal tolerated doses of these oral glucose-lowering agents. Exenatide is presented as pre-filled pens for subcutaneous injection. The recommended initial dose is 5 microg before morning and evening meals, to be up titrated to 10 microg twice daily. Exenatide may represent a valuable alternative to insulin therapy, especially in overweight or obese patients with type 2 diabetes and not ready to perform home blood glucose monitoring.
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PMID:[Medication of the month... Exenatide (Byetta) incretinomimetic in the treatment of type 2 diabetes after failure and as add-on therapy to oral agents]. 1856 73

This study assessed the dose-dependent efficacy and safety of exenatide over 12 weeks in Japanese patients with type 2 diabetes suboptimally controlled despite therapeutic doses of sulfonylurea (SU), SU plus biguanide, or SU plus thiazolidinedione. Patients were randomly assigned to placebo (N = 40), 2.5 microg (N = 38), 5 microg (N = 37), or 10 microg (N = 38) exenatide administered subcutaneously twice daily (BID). Patients randomly assigned to 10 microg exenatide received 5 microg BID for the first 4 weeks, with the dose escalated to 10 microg BID for the final 8 weeks. Patients were 60.3 +/- 9.7 years old, with body mass index 25.3 +/- 4.3 kg/m(2) and hemoglobin A1c (HbA1c) 8.0 +/- 0.8%. Baseline-to-endpoint HbA1c changes (%) were +0.02 +/- 0.1 (placebo), -0.9 +/- 0.1 (2.5 microg), -1.2 +/- 0.1 (5 microg), and -1.4 +/- 0.1 (10 microg) (all p < 0.001 vs. placebo). Of patients with baseline HbA1c -7%, 5.1% (placebo), 50.0% (2.5 microg), 71.4% (5 microg), and 79.4% (10 microg) achieved HbA1c <7% at endpoint (p < 0.001, trend test). Baseline-to-endpoint fasting plasma glucose changes (mg/dL) were +6.0 +/- 4.8 (placebo), -18.6 +/- 5.7 (2.5 microg), -25.0 +/- 7.0 (5 microg), and -28.9 +/- 5.9 (10 microg) (all p < or = 0.001 vs. placebo). Treatment-emergent adverse events were mostly mild; dose-dependent increases in incidence were observed for hypoglycemia, nausea, anorexia, decreased appetite, and diarrhea (all p < or = 0.044, trend test). Over 12 weeks, exenatide dose-dependently improved glycemic control in Japanese patients with type 2 diabetes.
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PMID:Exenatide exhibits dose-dependent effects on glycemic control over 12 weeks in Japanese patients with suboptimally controlled type 2 diabetes. 1919 50

A patient was presented with four days of vomiting, abdominal pain and sweating. At presentation the Capillary Blood Glucose (CBG) was 1.7 mmol/L, the Blood Pressure (BP) was 182/102 mmHg, and the pulse 100 bpm. On examination, he was sweaty, pale and cold. The initial differential diagnosis was hypoglycaemia secondary to insulin abuse, hypoadrenalism or insulinoma, the transient hypertension being considered a consequence of sympathetic stimulation. He remained clinically well overnight with a CBG of 10-14 mmol/L following intravenous glucose. The next morning he complained of nausea and abdominal pain. The BP had risen to 203/127 mmHg when he was later reviewed, having been given 10mg intramuscular metoclopramide. Shortly afterwards, he developed acute pulmonary oedema and had become hypoglycaemic again; a phaeochromocytoma crisis was suspected. Treatment with alpha-adrenoceptor blockade with intravenous phenoxybenzamine was advised. However, the patient deteriorated and died in the Intensive Care Unit within two hours. Autopsy examination confirmed a phaeochromocytoma in the left adrenal, with haemorrhage within the head of pancreas, but no evidence of a pancreatic tumour.
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PMID:Phaeochromocytoma crisis presenting with profound hypoglycaemia and subsequent hypertension. 1926 23

Liraglutide is a novel glucagon-like peptide-1 (GLP-1) receptor agonist with 97% amino acid sequence identity to native GLP-1. An amino acid substitution and fatty acid side chain enable a more protracted pharmacokinetic profile of over 24 hours. These modifications make liraglutide suitable for once-daily dosing. Liraglutide use exploits the incretin effect to glucose-dependently stimulate insulin secretion. The LEAD (Liraglutide Effect and Action Diabetes) program evaluated the safety and efficacy of liraglutide and demonstrated an improved level of glycemic control relative to currently used oral antidiabetic drugs, including other GLP-1-based therapies. In these trials, liraglutide was shown to enable many patients to achieve hemoglobin A1c (HbA1c) targets and to improve several morbidities commonly associated with type 2 diabetes; liraglutide induced weight loss, reduced systolic blood pressure and improved beta-cell function. Liraglutide was well tolerated, although an increased incidence of mild nausea was observed. Since liraglutide mimics the glucose-sensitive action of native GLP-1, it does not induce hypoglycemia. Liraglutide offers an interesting alternative therapy to control blood glucose levels in patients with type 2 diabetes, who commonly present with hypertension and overweight. It is expected to be approved by the U.S. Food and Drug Administration and the European Medicines Agency in Europe for use in 2009.
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PMID:Liraglutide: a new treatment for type 2 diabetes. 1934 30

Liraglutide is a long-acting analog of GLP-1, being developed by Novo Nordisk and currently undergoing regulatory review for the treatment of type 2 diabetes. Upon injection, liraglutide binds non-covalently to albumin, giving it a pharmacokinetic profile suitable for once-daily administration. In clinical trials of up to 1 year duration, liraglutide has been demonstrated to have beneficial effects on islet cell function, leading to improvements in glycemic control. Both fasting and postprandial glucose concentrations are lowered, and are associated with lasting reductions in HbA1c levels. Liraglutide is effective as monotherapy and in combination therapy with oral antidiabetic drugs, and reduces HbA1c by up to approximately 1.5% from baseline (8.2%-8.4%). Because of the glucose-dependency of its action, there is a low incidence of hypoglycemia. Liraglutide is associated with body weight loss, and reductions in systolic blood pressure have been observed throughout the clinical trials. The most common adverse events reported with liraglutide are gastrointestinal (nausea, vomiting and diarrhea). These tend to be most pronounced during the initial period of therapy and decline with time. Further clinical experience with liraglutide will reveal its long-term durability, safety and efficacy.
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PMID:Potential of liraglutide in the treatment of patients with type 2 diabetes. 1943 48

Incretins such as glucagon-like peptide-1 (GLP-1) are gut-derived hormones that stimulate insulin secretion and suppress glucagon secretion, thus playing a key role in glucose homeostasis. While incretin mimetics and enhancers are approved for treatment of outpatients with diabetes, evidence is only starting to accumulate regarding the therapeutic potential of incretins in hospitalized patients. Small exploratory studies suggest that GLP-1 safely reduces hyperglycemia without causing hypoglycemia, a key advantage over insulin if efficacy is established in larger studies. Potential limitations include the need for a continuous infusion for delivery, attenuation but not normalization of glucose levels, increased deceleration of gastric emptying and nausea. The exact mechanism of action, dosing, adverse effects, patient subgroups that would be most suitable and safety of combination treatment with insulin remain to be studied. While promising, additional research is required studying effects on hard clinical endpoints.
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PMID:Incretins in the ICU: is insulin on its way out? 1943 67


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