Decreased pancreatic acinar cell number in type 1 diabetes

Aims/hypothesis Individuals with longstanding and recent-onset type 1 diabetes have a smaller pancreas. Since beta cells represent a very small portion of the pancreas, the loss of pancreas volume in diabetes is primarily due to the loss of pancreatic exocrine mass. However, the structural changes i...

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Veröffentlicht in:Diabetologia 2020-07, Vol.63 (7), p.1418-1423
Hauptverfasser: Wright, Jordan J., Saunders, Diane C., Dai, Chunhua, Poffenberger, Greg, Cairns, Brynn, Serreze, David V., Harlan, David M., Bottino, Rita, Brissova, Marcela, Powers, Alvin C.
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container_end_page 1423
container_issue 7
container_start_page 1418
container_title Diabetologia
container_volume 63
creator Wright, Jordan J.
Saunders, Diane C.
Dai, Chunhua
Poffenberger, Greg
Cairns, Brynn
Serreze, David V.
Harlan, David M.
Bottino, Rita
Brissova, Marcela
Powers, Alvin C.
description Aims/hypothesis Individuals with longstanding and recent-onset type 1 diabetes have a smaller pancreas. Since beta cells represent a very small portion of the pancreas, the loss of pancreas volume in diabetes is primarily due to the loss of pancreatic exocrine mass. However, the structural changes in the exocrine pancreas in diabetes are not well understood. Methods To characterise the pancreatic endocrine and exocrine compartments in diabetes, we studied pancreases from adult donors with type 1 diabetes compared with similarly aged donors without diabetes. Islet cell mass, islet morphometry, exocrine mass, acinar cell size and number and pancreas fibrosis were assessed by immunohistochemical staining. To better understand possible mechanisms of altered pancreas size, we measured pancreas size in three mouse models of insulin deficiency. Results Pancreases from donors with type 1 diabetes were approximately 45% smaller than those from donors without diabetes (47.4 ± 2.6 vs 85.7 ± 3.7 g), independent of diabetes duration or age of onset. Diabetic donor pancreases had decreased beta cell mass (0.061 ± 0.025 vs 0.94 ± 0.21 g) and reduced total exocrine mass (42.0 ± 4.9 vs 96.1 ± 6.5 g). Diabetic acinar cells were similar in size but fewer in number compared with those in pancreases from non-diabetic donors (63.7 ± 8.1 × 10 9 vs 121.6 ± 12.2 × 10 9 cells/pancreas), likely accounting for the difference in pancreas size. Within the type 1 diabetes exocrine tissue, there was a greater degree of fibrosis. The pancreases in three mouse models of insulin deficiency were similar in size to those in control mice. Conclusions/interpretation Pancreases from donors with type 1 diabetes are smaller than normal donor pancreases because exocrine cells are fewer in number rather than smaller in size; these changes occur early in the disease process. Our mouse data suggest that decreased pancreas size in type 1 diabetes is not directly caused by insulin deficiency, but the precise mechanism responsible remains unclear.
doi_str_mv 10.1007/s00125-020-05155-y
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Since beta cells represent a very small portion of the pancreas, the loss of pancreas volume in diabetes is primarily due to the loss of pancreatic exocrine mass. However, the structural changes in the exocrine pancreas in diabetes are not well understood. Methods To characterise the pancreatic endocrine and exocrine compartments in diabetes, we studied pancreases from adult donors with type 1 diabetes compared with similarly aged donors without diabetes. Islet cell mass, islet morphometry, exocrine mass, acinar cell size and number and pancreas fibrosis were assessed by immunohistochemical staining. To better understand possible mechanisms of altered pancreas size, we measured pancreas size in three mouse models of insulin deficiency. Results Pancreases from donors with type 1 diabetes were approximately 45% smaller than those from donors without diabetes (47.4 ± 2.6 vs 85.7 ± 3.7 g), independent of diabetes duration or age of onset. Diabetic donor pancreases had decreased beta cell mass (0.061 ± 0.025 vs 0.94 ± 0.21 g) and reduced total exocrine mass (42.0 ± 4.9 vs 96.1 ± 6.5 g). Diabetic acinar cells were similar in size but fewer in number compared with those in pancreases from non-diabetic donors (63.7 ± 8.1 × 10 9 vs 121.6 ± 12.2 × 10 9 cells/pancreas), likely accounting for the difference in pancreas size. Within the type 1 diabetes exocrine tissue, there was a greater degree of fibrosis. The pancreases in three mouse models of insulin deficiency were similar in size to those in control mice. Conclusions/interpretation Pancreases from donors with type 1 diabetes are smaller than normal donor pancreases because exocrine cells are fewer in number rather than smaller in size; these changes occur early in the disease process. Our mouse data suggest that decreased pancreas size in type 1 diabetes is not directly caused by insulin deficiency, but the precise mechanism responsible remains unclear.</description><identifier>ISSN: 0012-186X</identifier><identifier>EISSN: 1432-0428</identifier><identifier>DOI: 10.1007/s00125-020-05155-y</identifier><identifier>PMID: 32388592</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Acinar cells ; Animal models ; Beta cells ; Cell number ; Cell size ; Diabetes ; Diabetes mellitus (insulin dependent) ; Fibrosis ; Human Physiology ; Insulin ; Internal Medicine ; Medicine ; Medicine &amp; Public Health ; Metabolic Diseases ; Morphometry ; Pancreas ; Short Communication</subject><ispartof>Diabetologia, 2020-07, Vol.63 (7), p.1418-1423</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c474t-c4a1508712e9081374b11157e3fb9ca892124525c986a7e324eb7f7506fffcd53</citedby><cites>FETCH-LOGICAL-c474t-c4a1508712e9081374b11157e3fb9ca892124525c986a7e324eb7f7506fffcd53</cites><orcidid>0000-0002-4999-3280 ; 0000-0003-1540-2996 ; 0000-0002-8849-6746 ; 0000-0002-6938-8109 ; 0000-0002-2043-0150 ; 0000-0003-1941-5786</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00125-020-05155-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00125-020-05155-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32388592$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wright, Jordan J.</creatorcontrib><creatorcontrib>Saunders, Diane C.</creatorcontrib><creatorcontrib>Dai, Chunhua</creatorcontrib><creatorcontrib>Poffenberger, Greg</creatorcontrib><creatorcontrib>Cairns, Brynn</creatorcontrib><creatorcontrib>Serreze, David V.</creatorcontrib><creatorcontrib>Harlan, David M.</creatorcontrib><creatorcontrib>Bottino, Rita</creatorcontrib><creatorcontrib>Brissova, Marcela</creatorcontrib><creatorcontrib>Powers, Alvin C.</creatorcontrib><title>Decreased pancreatic acinar cell number in type 1 diabetes</title><title>Diabetologia</title><addtitle>Diabetologia</addtitle><addtitle>Diabetologia</addtitle><description>Aims/hypothesis Individuals with longstanding and recent-onset type 1 diabetes have a smaller pancreas. Since beta cells represent a very small portion of the pancreas, the loss of pancreas volume in diabetes is primarily due to the loss of pancreatic exocrine mass. However, the structural changes in the exocrine pancreas in diabetes are not well understood. Methods To characterise the pancreatic endocrine and exocrine compartments in diabetes, we studied pancreases from adult donors with type 1 diabetes compared with similarly aged donors without diabetes. Islet cell mass, islet morphometry, exocrine mass, acinar cell size and number and pancreas fibrosis were assessed by immunohistochemical staining. To better understand possible mechanisms of altered pancreas size, we measured pancreas size in three mouse models of insulin deficiency. Results Pancreases from donors with type 1 diabetes were approximately 45% smaller than those from donors without diabetes (47.4 ± 2.6 vs 85.7 ± 3.7 g), independent of diabetes duration or age of onset. Diabetic donor pancreases had decreased beta cell mass (0.061 ± 0.025 vs 0.94 ± 0.21 g) and reduced total exocrine mass (42.0 ± 4.9 vs 96.1 ± 6.5 g). Diabetic acinar cells were similar in size but fewer in number compared with those in pancreases from non-diabetic donors (63.7 ± 8.1 × 10 9 vs 121.6 ± 12.2 × 10 9 cells/pancreas), likely accounting for the difference in pancreas size. Within the type 1 diabetes exocrine tissue, there was a greater degree of fibrosis. The pancreases in three mouse models of insulin deficiency were similar in size to those in control mice. Conclusions/interpretation Pancreases from donors with type 1 diabetes are smaller than normal donor pancreases because exocrine cells are fewer in number rather than smaller in size; these changes occur early in the disease process. 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Since beta cells represent a very small portion of the pancreas, the loss of pancreas volume in diabetes is primarily due to the loss of pancreatic exocrine mass. However, the structural changes in the exocrine pancreas in diabetes are not well understood. Methods To characterise the pancreatic endocrine and exocrine compartments in diabetes, we studied pancreases from adult donors with type 1 diabetes compared with similarly aged donors without diabetes. Islet cell mass, islet morphometry, exocrine mass, acinar cell size and number and pancreas fibrosis were assessed by immunohistochemical staining. To better understand possible mechanisms of altered pancreas size, we measured pancreas size in three mouse models of insulin deficiency. Results Pancreases from donors with type 1 diabetes were approximately 45% smaller than those from donors without diabetes (47.4 ± 2.6 vs 85.7 ± 3.7 g), independent of diabetes duration or age of onset. Diabetic donor pancreases had decreased beta cell mass (0.061 ± 0.025 vs 0.94 ± 0.21 g) and reduced total exocrine mass (42.0 ± 4.9 vs 96.1 ± 6.5 g). Diabetic acinar cells were similar in size but fewer in number compared with those in pancreases from non-diabetic donors (63.7 ± 8.1 × 10 9 vs 121.6 ± 12.2 × 10 9 cells/pancreas), likely accounting for the difference in pancreas size. Within the type 1 diabetes exocrine tissue, there was a greater degree of fibrosis. The pancreases in three mouse models of insulin deficiency were similar in size to those in control mice. Conclusions/interpretation Pancreases from donors with type 1 diabetes are smaller than normal donor pancreases because exocrine cells are fewer in number rather than smaller in size; these changes occur early in the disease process. Our mouse data suggest that decreased pancreas size in type 1 diabetes is not directly caused by insulin deficiency, but the precise mechanism responsible remains unclear.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>32388592</pmid><doi>10.1007/s00125-020-05155-y</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-4999-3280</orcidid><orcidid>https://orcid.org/0000-0003-1540-2996</orcidid><orcidid>https://orcid.org/0000-0002-8849-6746</orcidid><orcidid>https://orcid.org/0000-0002-6938-8109</orcidid><orcidid>https://orcid.org/0000-0002-2043-0150</orcidid><orcidid>https://orcid.org/0000-0003-1941-5786</orcidid><oa>free_for_read</oa></addata></record>
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subjects Acinar cells
Animal models
Beta cells
Cell number
Cell size
Diabetes
Diabetes mellitus (insulin dependent)
Fibrosis
Human Physiology
Insulin
Internal Medicine
Medicine
Medicine & Public Health
Metabolic Diseases
Morphometry
Pancreas
Short Communication
title Decreased pancreatic acinar cell number in type 1 diabetes
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