Morphological analysis of the human sperm tail during the early post-fertilization stage

Yoshiteru Kai; Hachiro Iseki; Takeshi Matsui; Naoki Yamashita

doi:10.1530/REP-23-0290

Morphological analysis of the human sperm tail during the early post-fertilization stage

Reproduction. 2024 Jan 23;167(2):e230290. doi: 10.1530/REP-23-0290. Print 2024 Feb 1.

Authors

Yoshiteru Kai¹, Hachiro Iseki^{2

3}, Takeshi Matsui^{2

3}, Naoki Yamashita¹

Affiliations

¹ Reproductive Medicine Research Center, Yamashita Shonan Yume Clinic, Fujisawa, Japan.
² Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.
³ Laboratory for Evolutionary Cell Biology of the Skin, School of Bioscience and Biotechnology, Tokyo University of Technology, Katakura, Hachioji, Tokyo, Japan.

PMID: 38271797
DOI: 10.1530/REP-23-0290

Abstract

After fertilization, the human sperm tail lost its fibrous sheath at the pronuclear stage to become coiled and then attached to one of the first mitotic spindle poles. The tip of the sperm tail was branched and its degree did not change from the pronuclear stage to the second mitosis.

MeSH terms

Fertilization*
Humans
Male
Mitosis
Semen
Sperm Tail*
Spermatozoa