Ultrastructure of Spermatogenesis in the Testis of Paragonimus heterotremus.
10.3347/kjp.2013.51.6.669
- Author:
Nongnut UABUNDIT
1
;
Pipatphong KANLA
;
Phongphithak PUTHIWAT
;
Channarong ARUNYANART
;
Kowit CHAICIWAMONGKOL
;
Wanchai MALEEWONG
;
Pewpan M INTAPAN
;
Sitthichai IAMSAARD
;
Wiphawi HIPKAEO
Author Information
1. Department of Anatomy, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand. wiphawi@kku.ac.th
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Paragonimus heterotremus;
lung fluke;
testis;
ultrastructure;
spermatogenesis;
spermiogenesis
- MeSH:
Animals;
Male;
Microscopy, Electron, Scanning;
Microscopy, Electron, Transmission;
Paragonimus/*physiology/*ultrastructure;
Spermatogenesis;
Spermatozoa/ultrastructure;
Testis/ultrastructure
- From:The Korean Journal of Parasitology
2013;51(6):669-676
- CountryRepublic of Korea
- Language:English
-
Abstract:
Lung fluke, Paragonimus heterotremus, is a flatworm causing pulmonary paragonimiasis in cats, dogs, and humans in Southeast Asia. We examined the ultrastructure of the testis of adult P. heterotremus with special attention to spermatogenesis and spermiogenesis using scanning and transmission electron microscopy. The full sequence of spermatogenesis and spermiogenesis, from the capsular basal lamina to the luminal surface, was demonstrated. The sequence comprises spermatogonia, spermatocytes with obvious nuclear synaptonemal complexes, spermatids, and eventual spermatozoa. Moreover, full steps of spermatid differentiation were shown which consisted of 1) early stage, 2) differentiation stage representing the flagella, intercentriolar body, basal body, striated rootlets, and electron dense nucleus of thread-like lamellar configuration, and 3) growing spermatid flagella. Detailed ultrastructure of 2 different types of spermatozoa was also shown in this study.
