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Topic: Somatostatin



  
 Somatostatin or Octreotide Not Effective in Decreasing Mortality or Transfusion in Acute Esophageal Varices Hemorrhage
The value of somatostatin or octreotide in the management of patients with acute variceal hemorrhage is questionable.
Randomized, controlled data regarding the use of somatostatin or octreotide in the management of acute variceal hemorrhage are only available in the adult literature.
The effectiveness of the drug was limited to the subgroup with peptic ulcer bleeding.
http://www.med.umich.edu/pediatrics/ebm/cats/octreotide.htm   (539 words)

  
 Treatment of Metastatic Breast Cancer With Somatostatin Analogues--A Meta-Analysis -- Dolan et al. 8 (3): 227 -- Annals ...
Feasibility, endocrine and anti-tumor effects of a triple endocrine therapy with tamoxifen, a somatostatin analogue and an antiprolactin in post-menopausal metastatic breast cancer: a randomized study with long-term follow-up.
when somatostatin analogues were given as first-line therapy.
if somatostatin analogues were given as initial therapy for
http://www.annalssurgicaloncology.org/cgi/content/full/8/3/227   (3318 words)

  
 Human proximal tubular epithelial cells express somatostatin: regulation by growth factors and cAMP -- Turman and Apple ...
After 48 h, conditioned medium was assayed for somatostatin by EIA and expressed as percent of somatostatin content in M + FBS in absence of EGF or hydrocortisone.
Vasoactive intestinal peptide: quantification by radioimmunoassay in isolated cells, mucosa, and muscle of the hamster intestine.
After 48 h, conditioned medium was assayed for somatostatin by EIA.
http://ajprenal.physiology.org/cgi/content/full/274/6/F1095   (3809 words)

  
 British Journal of Pharmacology - Somatostatin receptor-mediated arachidonic acid mobilization: evidence for partial ...
Assuming this to be the case, the effects of specific inhibitory compounds, such as PD 98059 or PP1, would be more readily observed against a somatostatin rather than an angiopeptin response, which was indeed found to be so.
Intriguingly, the MEK and Src inhibitors reduced the responses to somatostatin but not those to angiopeptin.
Both of these analogues have generated recent interest concerning their potential use therapeutically for the prevention of angiogenesis (Woltering et al., 1997; Albini et al., 1999) and restenosis following balloon angioplasty (Emanuelsson et al., 1995; von Essen et al., 1997).
http://www.nature.com/bjp/journal/v132/n3/full/0703862a.html   (4134 words)

  
 Effect of Somatostatin on Nitric Oxide Production in Human Retinal Pigment Epithelium Cell Cultures -- Vasilaki et al. ...
suggest an autocrine or paracrine role for somatostatin.
Copyright © 2004 by the Association for Research in Vision and Ophthalmology
Nervous System Research, Novartis Pharma AG, Basel, Switzerland.
http://www.iovs.org/cgi/content/abstract/45/5/1499   (236 words)

  
 American Family Physician: Octreotide: a somatostatin analog
Octreotide is a synthetic octapeptide with pharmacologic actions of somatostatin, but the drug has been rendered more resistant to the action of serum peptidases (Figure 1).
This drug is currently the most promising therapy for inoperable thyrotropinomas.16
Finally, it can behave as a "lumone," acting on the gut after secretion into the intestinal lumen.
http://www.findarticles.com/p/articles/mi_m3225/is_n6_v39/ai_7689235   (1291 words)

  
 Regulation of Rat Pancreatic CCKB Receptor and Somatostatin Expression by Insulin -- Julien et al. 53 (6): 1526 -- ...
in somatostatin expression and the behavior of the CCK
Barden N, Alvarado-Urbina G, Cote JP, Dupont A: Cyclic AMP-dependent stimulation of somatostatin secretion by isolated rat islets of Langerhans.
observed in the course of this study on somatostatin mRNA were
http://diabetes.diabetesjournals.org/cgi/content/full/53/6/1526   (4463 words)

  
 Somatostatin Analogs in Acromegaly -- Freda 87 (7): 3013 -- Journal of Clinical Endocrinology & Metabolism
Biochemical efficacy of somatostatin analog therapy for acromegaly
for the use of primary somatostatin analog therapy in acromegaly
than the success rate of somatostatin analog therapy (30, 75).
http://jcem.endojournals.org/cgi/content/full/87/7/3013   (5344 words)

  
 Somatostatin Receptors in the Diagnosis and Therapy of Neuroendocrine Tumors -- Wängberg et al. 2 (1): 50 -- The ...
Somatostatin and its cyclic octapeptide analog SMS 201-995 as inhibitors of proliferation of human acute lymphoblastic and acute myeloid leukemia.
cancer, somatostatin analogs have a therapeutic value as adjuncts
Over the last years, interest has been focused on the antiproliferative
http://theoncologist.alphamedpress.org/cgi/content/full/2/1/50   (4222 words)

  
 Somatostatin-14 Neurons in the Ovine Hypothalamus: Colocalization with Estrogen Receptor {alpha} and ...
somatostatin neurons of the periventricular nucleus, and no
However, studies in the rat [24] and preliminary investigations
influence somatostatin secretion in the hypophyseal portal system.
http://www.biolreprod.org/cgi/content/full/69/4/1318   (4637 words)

  
 SSTR3 - Somatostatin receptor type 3
Therefore, SSTR scintigraphy of human primary tumours and their metastases presumably visualizes SSTR2-expressing tumours, although it is reasonable to assume that SSTR5, and to a lesser extent SSTR3, when expressed simultaneously with SSTR2, also contribute to the visualization of tumours.
Interestingly, SSTR3 mRNA, which is highly expressed in rat pancreatic islets, is not expressed in normal human pancreatic islets, while SSTR1, SSTR2, and SSTR4 mRNAs are expressed.
Binding experiments on HEK cells transfected with either SSTR3 or 4 indicated that this difference is not attributable to slow dissociation of the agonist from the receptor, suggesting that SSTR4 mediates long-lasting signalling, a property which may be relevant for clinical therapy.
http://www.pdg.cnb.uam.es/UniPub/iHOP/gg/92418.html   (4358 words)

  
 Role of somatostatin-14 and its analogues in the management of gastrointestinal fistulae: clinical data -- Hesse et al. ...
Emerging differences in the therapeutic efficacy of somatostatin and octreotide in gastroenterology and surgery.
Treatment of pancreatic ascites and external pancreatic fistulas with a long-acting somatostatin analogue (Sandostatin).
Parallel in vivo and in vitro detection of functional somatostatin receptors in human endocrine pancreatic tumours: consequences with regard to diagnosis, localization, and therapy.
http://gut.bmjjournals.com/cgi/content/full/49/suppl_4/iv11   (4399 words)

  
 Immunohistochemical and Cytochemical Localization of the Somatostatin Receptor Subtype sst1 in the Somatostatinergic ...
Somatostatin is present in the CSF (Patel et al., 1977
Kawano H, Daikoku S (1988) Somatostatin-containing neuron systems in the rat hypothalamus: retrograde tracing and immunohistochemical studies.
The physiological effects of somatostatin are mediated by high-affinity membrane receptors.
http://www.jneurosci.org/cgi/content/full/18/13/4938   (4241 words)

  
 Somatostatin Receptor Scintigraphy: Its Sensitivity Compared with That of Other Imaging Methods in Detecting Primary ...
Finally, most studies have not assessed the sensitivity of somatostatin
the practitioner to define the potential role of somatostatin
of patients, and by somatostatin receptor scintigraphy in 70%
http://www.annals.org/cgi/content/full/125/1/26   (5900 words)

  
 Short Term Inhibitory Effect of Somatostatin on Gastric Histamine Synthesis -- Hollande et al. 138 (3): 955 -- ...
Data are from 1 of 5 (somatostatin) or 12 (basal) similar experiments.
the intracellular effects of somatostatin are prevented by treatment
Furthermore, we studied the effect of somatostatin on
http://endo.endojournals.org/cgi/content/full/138/3/955   (4596 words)

  
 Somatostatin Receptor Imaging
However, it is not clear how this technique compares to traditional gallium imaging.
Somatostatin receptor scintigraphy with [111In-DTPA-D-Phe1]- and [123I-Tyr3]-octreotide: the Rotterdam experience with more than 1000 patients.
Normal tracer uptake in surrounding tissues may be responsible for eight false negative studies of medullary thryroid cancer metastatic to the liver in seven patients as well as one lesion in the thyroid.
http://brighamrad.harvard.edu/Cases/jpnm/hcache/1009/full.html   (960 words)

  
 OCD and Somatostatin -- Neurotransmitter.net
The exact sites and mechanisms of this action, however, are poorly understood, and the physiological context in which somatostatin acts is unknown.
The high levels of CSF somatostatin reported here in a patient subgroup whose predominant symptoms consisted of overly focused, perseverative thought processes are in contrast to the consistently low levels of CSF somatostatin seen in patients with a spectrum of disorders characterized by substantial cognitive deficits." [Abstract]
RESULTS: The mean CSF somatostatin level was significantly higher in the patients with obsessive-compulsive disorder than in the normal subjects.
http://www.neurotransmitter.net/ocdsomatostatin.html   (16644 words)

  
 Increased pituitary response to somatostatin in aging male rats: relationship to somatostatin receptor number and ...
Increased pituitary response to somatostatin in aging male rats: relationship to somatostatin receptor number and affinity.
The purpose of this study was to determine whether this decline is associated with (1) increased pituitary response to somatostatin, and/or (2) increased number or affinity of pituitary somatostatin receptors.
Two pituitaries from each age group were superfused simultaneously and the experiment replicated 4 times.
http://www.arclab.org/medlineupdates/abstract_2575235.html   (211 words)

  
 S W J LAMBERTS et al.: Somatostatin analogs (European Journal of Endocrinology)
Receptors for dopamine and somatostatin: formation of hetero-oligomers with enhanced functional activity [see comments].
Effect of long-acting somatostatin analog (Somatulin) on renal hyperfiltration in patients with IDDM.
The role of somatostatin in the regulation of anterior pituitary hormone secretion and the use of its analogs in the treatment of human pituitary tumors.
http://www.eje.org/eje/146/0701/eje1460701.htm   (822 words)

  
 Somatostatin
Somatostatin and its synthetic analogs are used clinically to treat a variety of neoplasms.
Somatostatin acts by both endocrine and paracrine pathways to affect its target cells.
Injection of somatostatin into the brain of rodents leads to such things as increased arousal and decreased sleep, and impairment of some motor responses.
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/endocrine/otherendo/somatostatin.html   (602 words)

  
 Somatostatin - Wikipedia, the free encyclopedia
The FDA has approved the usage of a salt form of this peptide, octreotide acetate, as an injectable depot formulation for the treatment of acromegaly, the treatment of diarrhea and flushing episodes associated with carcinoid syndrome, and treatment of diarrhea in patients with vasoactive intestinal peptide-secreting tumors (VIPomas).
Somatostatin is secreted not only by cells of the hypothalamus but also by so called delta cells of stomach, intestine and pancreas.
Octreotide (brand name Sandostatin, Novartis Pharmaceuticals) is an octopeptide that mimics natural somatostatin pharmacologically, though is a more potent inhibitor of growth hormone, glucagon, and insulin than the natural hormone.
http://en.wikipedia.org/wiki/Somatostatin   (192 words)

  
 SSTR2 - Somatostatin receptor 2 - Cancer GeneticsWeb
High expression of somatostatin receptor subtype 2 (sst2) in medulloblastoma: implications for diagnosis and therapy.
Disclaimer: This site is for educational purposes only; it can not be used in diagnosis or treatment.
Somatostatin receptor type 2 gene expression in neuroblastoma, measured by competitive RT-PCR, is related to patient survival and to somatostatin receptor imaging by indium -111-pentetreotide.
http://www.cancerindex.org/geneweb/SSTR2.htm   (228 words)

  
 SST3-selective potent peptidic somatostatin receptor antagonists -- Reubi et al. 97 (25): 13973 -- Proceedings of the ...
According to some authors (35, 36), the somatostatin effect mediated by sst
Somatostatin modulates numerous actions in the body (1, 2) that are mediated by at least five somatostatin receptor
brain, where somatostatin may play a neurotransmitter role (19,
http://www.pnas.org/cgi/content/full/97/25/13973   (3546 words)

  
 In Vitro Characterization of Somatostatin Receptors in the Human Thymus and Effects of Somatostatin and Octreotide on ...
Somatostatin Receptor 2A Expression in Choroidal Neovascularization Secondary to Age-Related Macular Degeneration
In Vitro Characterization of Somatostatin Receptors in the Human Thymus and Effects of Somatostatin and Octreotide on Cultured Thymic Epithelial Cells -- Ferone et al.
In Vitro Characterization of Somatostatin Receptors in the Human Thymus and Effects of Somatostatin and Octreotide on Cultured Thymic Epithelial Cells
http://endo.endojournals.org/cgi/content/abstract/140/1/373   (918 words)

  
 Somatostatin Receptor 1 antibody (ab479) datasheet
Somatostatin receptors have been implicated in numerous diseases ranging from Alzheimer's to cancers of the gastrointestinal tract, breast, prostate, and pituitary.
Customer reviews (feedback) regarding Somatostatin Receptor 1 antibody
Somatostatin acts to regulate numerous physiological processes by binding to and activating specific receptors in target tissues.
http://www.abcam.com/?datasheet=479   (517 words)

  
 British Journal of Pharmacology - Abstract of article: Cellular actions of somatostatin on rat periaqueductal grey ...
Somatostatin also reduced the amplitude of evoked GABA
Cellular actions of somatostatin on rat periaqueductal grey neurons in vitro
Functional studies indicate that the midbrain periaqueductal grey (PAG) is involved in the analgesic actions of somatostatin; however, the cellular actions of somatostatin in this brain region are unknown.
http://www.nature.com/bjp/journal/v142/n8/abs/0705894a.html   (385 words)

  
 Somatostatin Activation of Mitogen-Activated Protein Kinase via Somatostatin Receptor 1 (SSTR1) -- Florio et al. 13 ...
Somatostatin Receptor Subtype-Dependent Regulation of Nitric Oxide Release: Involvement of Different Intracellular Pathways
Quantitative and Functional Expression of Somatostatin Receptor Subtypes in Human Prolactinomas
Prolonged Activation of Extracellular Signal-regulated Kinase by a Protein Kinase C-dependent and N17Ras-insensitive Mechanism Mediates the Proliferative Response of Gi/o-coupled Somatostatin sst4 Receptors
http://mend.endojournals.org/cgi/content/abstract/13/1/24   (1013 words)

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