peptide-phi has been researched along with Diarrhea* in 2 studies
2 other study(ies) available for peptide-phi and Diarrhea
Article | Year |
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Treatment of patients with pancreatic endocrine tumours using a new long-acting somatostatin analogue symptomatic and peptide responses.
Seven patients with gut and pancreatic endocrine tumours have been treated with a long acting somatostatin analogue (SMS 201-995), given as a twice daily subcutaneous injection. This produced dramatic improvement in their endocrine related symptoms, in association with a fall in circulating tumour peptides. One of these patients has now been treated for seven months with this analogue which has controlled his previously life threatening diarrhoea caused by a malignant VIP secreting tumour. He gives his own injections twice daily, and has returned to a full and active life. This is a promising agent both for acute treatment of peptide hypersecretion, and for the long term management of some patients who are unresponsive to other available therapy. Topics: Adult; Aged; Diarrhea; Female; Gastrins; Glucagon; Humans; Male; Middle Aged; Octreotide; Pancreatic Neoplasms; Paraneoplastic Endocrine Syndromes; Peptide PHI; Peptides; Somatostatin; Vasoactive Intestinal Peptide | 1985 |
Diarrhoea in vipoma patients associated with cosecretion of a second active peptide (peptide histidine isoleucine) explained by single coding gene.
Peptide histidine isoleucine (PHI), first isolated from pig intestine, is distributed identically to vasoactive intestinal peptide (VIP) in all mammals. 42 patients with high plasma VIP secondary to VIPoma also had very high plasma PHI-like immunoreactivity, in a constant ratio to VIP. None of 125 patients with other endocrine tumours had high levels of either peptide. VIPoma tissue from 20 patients also contained PHI shown by immunocytochemistry to be produced by the same cell as VIP. Messenger RNA(mRNA) from one of these tumours contained the codes for VIP and a separate PHI-like sequence. Human PHI-like sequence differed from porcine PHI in only two aminoacid residues. A single cell thus produces two separate regulatory peptides with apparently similar potencies but different spectra of activity. In normal tissue the constant coproduction of two active neuropeptides by a single neuron provides further evidence against the doctrine of one neuron producing only one neurotransmitter. Topics: Adenoma, Islet Cell; Base Sequence; Diarrhea; Genetic Code; Histocytochemistry; Humans; Intestinal Secretions; Intestine, Small; Pancreatic Neoplasms; Peptide PHI; Peptides; Radioimmunoassay; RNA, Messenger; RNA, Neoplasm; Vasoactive Intestinal Peptide; Vipoma | 1983 |