Details

Autor(en) / Beteiligte

• Uemura, Kei-ichiro
• Hiroshige, Tasuku
• Ueda, Kosuke
• Ohta, Keisuke
• Hayashi, Tokumasa
• Hirashima, Shingo
• Kanazawa, Tomonoshin
• Nakiri, Makoto
• Igawa, Tsukasa
• Nakamura, Kei-ichiro

Titel

Distribution, shape, and immunohistochemical characteristics of serotonin-immunoreactive neuroendocrine cells in the urethra and periurethral genital organs in mice

Ist Teil von

• Journal of molecular histology, 2021-12, Vol.52 (6), p.1205-1214

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2021

Quelle

MEDLINE

Beschreibungen/Notizen

• The aim of this study is to clarify the disibution, shape, and immunohistochemical characteristics of serotonin-immunoreactive neuroendocrine cells (SIR-NECs) in mouse prostate and in the surrounding genital organs by histological and immunohistochemical analysis of the light microscopic serial sections of urethra. We collected lower urinary tracts from 13-week-old mice and observed the distribution pattern and shape of the SIR-NECs by serial light microscopy. The organs on the sections were divided into three anatomical zones to clarify the distribution pattern of SIR-NECs: (1) zone A, the ducts near the prostatic urethra; (2) zone B, the ducts outside the urethral sphincter; and (3) zone C, the acinus areas. Sections were double immune-stained with antibodies against serotonin and one of neuroendocrine-related factors (NRFs), including 10 neural cell markers and eight neurotransmitters, and also 4′,6-diamino-2-phenylindole (DAPI). In addition, SIR-NECs were double immune-stained with antibodies against cytokeratin 5 (CK5) and p63, together with DAPI. SIR-NECs were mostly localized in zone A, and no SIR-NECs were observed in zone C. The proportion of flask-shaped SIR-NECs was approximately 15% in zones A and B. No flask-shaped SIR-NECs were observed in urethral epithelia. The NRFs co-localized with SIR-NEC were calcitonin gene-related peptide, CD56, chromogranin A, neuron-specific enolase, neuron cytoplastic protein 9.5, and synaptophysin (72.3%, 73.2%, 88.9%, 92.3%, 91.7%, and 81.9%, respectively). CK5 and p63 were not co-localized with SIR-NECs.　In this study, SIR-NEC of the urethra and the surrounding genital organs was ubiquitous in the urethra and the ducts near the urethra and co-expressed specific nerve-related NRFs.