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

Neuroendocrine neoplasms of the gastroenteropancreatic system are classified according to the WHO classification system 2010 into neuroendocrine tumors (NET) and neuroendocrine carcinomas (NEC). The proliferation index Ki-67 and the grading of NETs is essential for the prognosis and therapy plan. Also NET tumor biology and therapeutic options may differ depending on the primary NET tumor location. Palliative therapy of inoperable NETs involves local ablative methods in cases of primary liver metastasis, peptide receptor radionuclide therapy (PRRT) in NETs expressing somatostatin receptors and different options for medicinal therapy. This manuscript reviews the current role of biotherapy with somatostatin analogues and interferon-alpha for symptom and tumor control. In addition conventional chemotherapy regimens and novel molecular targeted therapeutic options, such as sunitinib or everolimus in NET of the pancreas are reviewed. Possible therapeutic algorithms are discussed.
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PMID:[Medicinal therapy of metastasized neuroendocrine tumors of the gastroenteropancreatic system.] 2229 40

"Carcinoids" are mostly slow-growing neuroendocrine neoplasms (NENs) with low proliferative activity. A wide range of therapeutic options with variable efficacy exist, including locoregional ablative strategies. Thereafter, some patients may not require medical therapy for years depending on the rate of progression or recurrence. However, the majority of patients require systemic treatment and therein lies the dilemma, since no antiproliferative agent is currently approved for carcinoids. Somatostatin analogs (SSAs), and to a lesser extent interferon-alpha, are standard therapy for carcinoids associated with the carcinoid syndrome. These drugs have some antiproliferative efficacy. SSAs rarely lead to tumor remission but may modestly prolong time to tumor progression. Chemotherapy is of limited value in carcinoids with low proliferation indices but may be useful in higher grade tumors. Peptide receptor-targeted radionuclide therapy may be of benefit and is mostly used after medical therapies fail. However, it is considered an investigational modality. More recently, targeted drugs such as mammalian target of rapamycin (mTOR) inhibitors and anti-angiogenics have been investigated. Objective remissions are rare. Their value remains to be rigorously elucidated. Increased efficacy requires a better understanding of the underlying tumor biology and identification of molecular pathological criteria to allow appropriate preselection of candidates for targeted therapies.
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PMID:Systemic therapeutic options for carcinoid. 2339 Nov 16

The treatment of patients with neuroendocrine tumours and hormonally active distant metastases traditionally included surgical removal of the primary neoplasm, embolization of metastases in the liver, therapy with somatostatin analogs and interferon-alpha to prevent excessive production of regulatory peptides (carcinoid and other endocrine syndromes). Patients with neuroendocrine pancreatic tumours were also treated with alkylating chemotherapeutic drugs including streptosocin and temozolomide. The results of such treatment are far from being satisfactory. Recent progress in the treatment of such patients is due to radiotherapy using somatostatin analogs. Moreover, large-scale randomized studies demonstrated the effectiveness of targeted preparations acting on receptors of vascular growth factors and ripamycin target inhibitors ofmammals. Results of the studies on comparative effectiveness of targeted drugs for combined therapy of neuroendocrine tumours are presented.
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PMID:[Possibilities for targeted therapy of neuroendocrine tumours]. 2579 Jun 90


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