1,721,339 research outputs found
Probiotics: Could they turn out to be ineffective in irritable bowel syndrome?
No full textNo abstract availabl
Anti-cagA reactivity in Helicobacter pylory negative subjects: a comparison of three different methodsFusconi M, Vaira D, Menegatti M, Farinelli S, Figura N, Holton J, Ricci C, Corinaldesi R,Miglioli M
No full text
Neurotensin: a physiological regulator of exocrine pancreatic secretion?
No full textThe aim of the present review was to evaluate the effects of neurotensin on the exocrine pancreatic secretion. Neurotensin immunoreactivity has been identified in the central nervous system and also in the digestive system, where it is found in specific endocrine cells of the intestinal mucosa (N cells), in nerve fibers of the enteric nervous system and in intrapancreatic ganglia (both in nerves and cell bodies). Studies in laboratory animals and in humans have demonstrated that the ingestion of a meal causes a significant release of neurotensin into the circulation and that exogenous administration of low doses of the peptide strongly stimulates exocrine pancreatic secretion. These findings, together with the demonstration that the immunoneutralization of circulating neurotensin significantly reduces the pancreatic secretory response to a meal, suggest that neurotensin is a physiological regulator of exocrine pancreatic secretion
An unusual growth of an intraventricular meningioma: a case report
No full textIntraventricular meningiomas are rare often
histologically benign tumors arising most always from the
trigonal region of the lateral ventricle. We report the first
described case of a rapidly growing histologically benign
intraventricular meningioma in a 68-year-old woman whose
magnetic resonance imaging (MRI) executed 1 year before
surgical operation was negative for intracranial mass lesio
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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