start-ver=1.4
cd-journal=joma
no-vol=14
cd-vols=
no-issue=11
article-no=
start-page=e31713
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20221120
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Increased CCR4+ and Decreased Central Memory CD4+ T Lymphocytes in the Background Gastric Mucosa of Patients Developing Gastric Cancer After Helicobacter pylori Eradication: An Exploratory Study
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The composition of lymphocytes in the gastric mucosa following the eradication of Helicobacter pylori (H. pylori) in patients with and without gastric cancer has not been compared. This study performed a single spot analysis of gastric mucosal lymphocytes after H. pylori eradication in patients with (n = 13) and without (n = 20) gastric cancer. Our comprehensive analysis of lymphocyte composition in the gastric mucosa revealed that: i) the proportion of CD8+/CD3+ cells was relatively higher in the peri-tumor mucosa than in the background mucosa; ii) the proportion of CCR4+/CD3+ cells was higher, and the ratio of CD62L+/CD3+CD4+ cells was relatively lower in the gastric mucosa of cancer patients than in non-cancer patients; and iii) the proportion of CD45RA-CD62L+/CD3+CD4+ cells, namely, the central memory CD4+ T -cell fraction, was lower in the gastric mucosa of cancer patients than in non-cancer patients. Although the exact mechanism of the altered proportions of CCR4+/CD3+ and central memory CD4+ cells in the gastric mucosa of patients with cancer is unknown, focusing on lymphocytes in the gastric mucosa might help improve our understanding of gastric cancer development after H. pylori eradication.
en-copyright=
kn-copyright=

en-aut-name=IwamuroMasaya
en-aut-sei=Iwamuro
en-aut-mei=Masaya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=TakahashiTakahide
en-aut-sei=Takahashi
en-aut-mei=Takahide
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=HirabataAraki
en-aut-sei=Hirabata
en-aut-mei=Araki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
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=4
ORCID=

en-aut-name=OtsukaFumio
en-aut-sei=Otsuka
en-aut-mei=Fumio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=OkadaHoroyuki
en-aut-sei=Okada
en-aut-mei=Horoyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Department of Gastroenterology and Hepatology, Okayama University Hospital
kn-affil=

affil-num=2
en-affil=Division of Medical Support, Okayama University Hospital
kn-affil=

affil-num=3
en-affil=Division of Medical Support, Okayama University Hospital
kn-affil=

affil-num=4
en-affil=Department of Pathology, Okayama University Hospital
kn-affil=

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

affil-num=6
en-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
en-keyword=carcinogenesis
kn-keyword=carcinogenesis
en-keyword=lymphocytes
kn-keyword=lymphocytes
en-keyword=helicobacter pylori
kn-keyword=helicobacter pylori
en-keyword=gastric adenocarcinoma
kn-keyword=gastric adenocarcinoma
en-keyword=flow cytometry
kn-keyword=flow cytometry
END