Distribution and developmental changes of IL-21 immunopositive cells in the bursa of Fabricius of Jinhu silky chicken.
IL-21
Jinhu silky chicken
bursa of Fabricius
developmental changes
distribution characteristics
histological structure
Journal
Journal of experimental zoology. Part A, Ecological and integrative physiology
ISSN: 2471-5646
Titre abrégé: J Exp Zool A Ecol Integr Physiol
Pays: United States
ID NLM: 101710204
Informations de publication
Date de publication:
Jan 2024
Jan 2024
Historique:
revised:
31
08
2023
received:
16
06
2023
accepted:
28
09
2023
pubmed:
25
10
2023
medline:
25
10
2023
entrez:
25
10
2023
Statut:
ppublish
Résumé
Bursa of Fabricius (BOF) is a unique immune organ of birds. It is the place where lymphocytes develop, differentiate and mature. Young chicken BOF is susceptible to infection and damage, and even atrophy, causing immune suppression, and bringing huge economic losses to chicken production. Therefore, studying the regulatory mechanism of chicken bursa development is of great practical significance for disease prevention and diagnosis. Jinhu silky chicken (JSC) is a local excellent breed in the Fujian Province of China and with strong disease resistance. However, studies on the disease resistance of JSC are scarce. This study aimed to provide a theoretical basis for reproduction and disease control of JSC. Developmental features of the structure and the IL-21-positive cell (IL-21 PC) distribution on the BOF in JSC were measured from 7 to 300 days of age. Bursas of chicken (n = 36) were taken at 7, 35, 70, 150, 240, and 300 days of age for preparation of paraffin sections and stained with hematoxylin-eosin (HE) and immunohistochemistry. The microstructure of JSC's BOF was similar to that of other poultry. The cortical-medullary boundary of the bursa nodule was not obvious at 7 days of age, but it was evident after 35 days of age. Before 70 days of age, IL-21 positive cells (PC) were scattered on the BOF. At 150 days of age, the number of IL-21 PC in the bursa were the highest and the nuclei were clear. The level of IL-21 PC gradually decreased with age. The BOF degenerated and disappeared in 300-day-old JSC. The histological structure of the BOF was similar to that of other poultry. IL-21 PC were widespread in the BOF at different ages, but the numbers were different.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
41-47Subventions
Organisme : 2020 Xiamen Medical College Natural Science Project
ID : K2020-03
Organisme : Fuzhou Science and Technology Bureau Project
ID : 2014-G-57
Informations de copyright
© 2023 Wiley Periodicals LLC.
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