start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=7
article-no=
start-page=e18241
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=202307
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Expression and clinicopathological characteristics of PDX1, PTF1A, and SALL4 in large and small ducts of ectopic pancreas located in gastro-duodenum and jejunum
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=An ectopic pancreas is defined as pancreatic tissue outside its normal location, anatomically separated from the pancreas.<br>
　The transcription factor pancreas/duodenum homeobox protein 1 (PDX1) is involved in maintaining the pancreas and functions in early pancreatic development, beta cell differentiation, and endocrine non beta cells. Pancreatic transcription factor 1 subunit alpha (PTF1A) affects exocrine cell formation and regulation of acinar cell identity, and is expressed in exocrine cells as a transcription factor. The depletion of SALL4 disrupts self-renewal and induces differentiation.<br>
　To clarify which of PDX1, PTF1A, or SALL4 determines the difference in Heinrich's classification, we examined the localization and number of positive cells. We analyzed the differential expression of PDX1, PTF1A, and SALL4 in large and small ducts in ectopic pancreas by immunohistochemistry. Results showed that the number of PTF1A-positive cells in large ducts was more widespread in type I than in type II in the gastro-duodenum, and more SALL4-positive cells were noticed in large ducts than in small ducts in the gastro-duodenum of type II. Our results revealed that PTF1A might promote exocrine differentiation in developing the pancreatic tissues, and that those with widespread expression differentiate into exocrine cells.
en-copyright=
kn-copyright=

en-aut-name=ChenMengxi
en-aut-sei=Chen
en-aut-mei=Mengxi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TanakaTakehiro
en-aut-sei=Tanaka
en-aut-mei=Takehiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=IgawaTakuro
en-aut-sei=Igawa
en-aut-mei=Takuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HanYanyan
en-aut-sei=Han
en-aut-mei=Yanyan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=PengFangli
en-aut-sei=Peng
en-aut-mei=Fangli
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=JinZaishun
en-aut-sei=Jin
en-aut-mei=Zaishun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=YoshinoTadashi
en-aut-sei=Yoshino
en-aut-mei=Tadashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=2
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=3
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=4
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=5
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=

affil-num=6
en-affil=Department of Pathology, Mudanjiang Medical University
kn-affil=

affil-num=7
en-affil=Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=PDX1
kn-keyword=PDX1
en-keyword=PTF1A
kn-keyword=PTF1A
en-keyword=SALL4
kn-keyword=SALL4
en-keyword=Ectopic pancreas
kn-keyword=Ectopic pancreas
en-keyword=Gastro-duodenum
kn-keyword=Gastro-duodenum
en-keyword=Jejunum
kn-keyword=Jejunum
END