Chromogranin A‐positive hormone‐negative endocrine cells in pancreas in human pregnancy
<h2>Introduction</h2> <p>We sought to determine whether chromogranin A-positive hormone-negative (CPHN) endocrine cells are increased in the pancreas of pregnant women, offering potential evidence in support of neogenesis.</p> <h2>Methods</h2> <p>Autopsy pan...
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2023
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| Summary: | <h2>Introduction</h2> <p>We sought to determine whether chromogranin A-positive hormone-negative (CPHN) endocrine cells are increased in the pancreas of pregnant women, offering potential evidence in support of neogenesis.</p> <h2>Methods</h2> <p>Autopsy pancreata from pregnant women (<em>n</em> = 14) and age-matched non-pregnant control women (<em>n</em> = 9) were obtained. Staining of pancreatic sections for chromogranin A, insulin and a cocktail of glucagon, somatostatin, pancreatic polypeptide and ghrelin was undertaken, with subsequent evaluation for CPHN cell frequency.</p> <h2>Results</h2> <p>The frequency of clustered β-cells was increased in pregnant compared to non-pregnant subjects (46.6 ± 5.0 vs. 31.8 ± 5.0% clustered β-cells of total clustered endocrine cells, pregnant vs. non-pregnant, <em>p</em> < .05). Frequency of endocrine cocktail cells was lower in pregnant women than non-pregnant women (36.2 ± 4.0 vs. 57.0 ± 6.8% clustered endocrine cocktail cells of total clustered endocrine cells, pregnant vs. non-pregnant, <em>p</em> < .01). No difference in frequency of CPHN cells was found in islets, nor in clustered or single cells scattered throughout the exocrine pancreas, between pregnant and non-pregnant women. The frequency of CPHN cells in pregnancy was independent of the number of pregnancies (gravidity).</p> <h2>Conclusions</h2> <p>Our findings of no increase in CPHN cell frequency in pancreas of pregnant women suggest that this potential β-cell regenerative mechanism is not that by which the increased β-cell mass of pregnancy is achieved. However, an increase in the percentage of clustered β-cells was found in pregnancy, with decreased frequency of other endocrine cells in clusters, suggesting a compensatory shift from other pancreatic endocrine cell types to β-cells as a mechanism to meet the increased insulin demands of pregnancy.</p> <h2>Other Information</h2> <p>Published in: Endocrinology, Diabetes & Metabolism<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="http://dx.doi.org/10.1002/edm2.223" target="_blank">http://dx.doi.org/10.1002/edm2.223</a></p> |
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