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Li H, Pan C, Wang Y, Li J, Zhang Z, Shahzad K, Mustafa SB, Wang Y, Zhao W. Analysis of histomorphology and SERNINA5 gene expression in different regions of epididymis of cattleyak. J Mol Histol 2024:10.1007/s10735-024-10234-0. [PMID: 39105940 DOI: 10.1007/s10735-024-10234-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 07/22/2024] [Indexed: 08/07/2024]
Abstract
The molecular mechanism of sterility in cattleyak is still unresolved. The related factors of infertility in cattleyak were studied by tissue section, SERPINA5 gene cloning and bioinformatics technology. Tissue sections of the epididymis showed poorly structured and disorganized epithelial cells in the corpus of the epididymis compared to the caput of the epididymis, while in the cauda part of the epididymis, the extra basal smooth muscle was thinner, the surface of the epithelial lumen was discontinuous and the epithelium was markedly degenerated. The results of gene cloning showed that the coding sequence (CDS) region of the SERPINA5 gene in cattleyak was 1215 bp in length, encoding a total of 404 amino acids, of which the isoleucine content was the highest, accounting for a total of 49 amino acids (12.1%). The results of real-time fluorescence quantitative PCR (qPCR) showed that the expression of the SERPINA5 gene in the epididymis caput in cattleyak was significantly higher than that in the corpus and cauda (P < 0.05), but there were no significant differences between the corpus and cauda. In the current study, histological and bioinformatics analysis, physicochemical properties, and the expression analysis of the SERPINA5 gene in different regions of the epididymis in cattleyak were carried out to explore the biological complications of cattleyak infertility.
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Affiliation(s)
- Haiyan Li
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China
| | - Cheng Pan
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China
| | - Yifei Wang
- Department of Clinical Laboratory, Sichuan Mianyang 404 Hospital, Mianyang, Sichuan, 621000, China
| | - Jingjing Li
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China
| | - Zhenzhen Zhang
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China
| | - Khuram Shahzad
- Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad, 45550, Pakistan
| | - Shehr Bano Mustafa
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China
| | - Ye Wang
- Chengdu Research Base of Giant Panda Breeding, Chengdu, Sichuan, 610057, China.
| | - Wangsheng Zhao
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621000, China.
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Yu W, Zhang Z, Liu P, Yang X, Zhang H, Yuan Z, Han Y, Weng Q. Seasonal expressions of SPAG11A and androgen receptor in the epididymis of the wild ground squirrels (<em>Citellus dauricus</em> Brandt). Eur J Histochem 2020; 64. [PMID: 32363846 PMCID: PMC7186593 DOI: 10.4081/ejh.2020.3111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/02/2020] [Indexed: 12/24/2022] Open
Abstract
Sperm-associated antigen 11A (SPAG11A), a protein expressed exclusively in the epididymis, plays a vital and special role in regulating mammalian sperm maturation. The aim of this study was to investigate the seasonal expressions of SPAG11A and androgen receptor (AR) in the epididymis of the wild ground squirrels (Spermophilus dauricus Brandt). Morphologically, the results showed that epididymis length and weight in the breeding season were significantly higher than those of the non-breeding season. Histologically, the results revealed that enlarged lumen diameters, thickened epithelium and abundant sperm in the breeding season while reduced lumen diameters and epithelium with no sperm in the non-breeding season. SPAG11A was intensely expressed in cytoplasm and nucleus of epithelial cells and smooth muscle cells in the breeding season, and weaker staining in the non-breeding season. In the lumen of epididymis, SPAG11A immunostaining in the sperm of the epididymal corpus and cauda was higher than those in the caput during the breeding season. The immunostaining of AR was only presented in nucleus of smooth muscle cells and epithelial cells in the epididymis from the breeding season rather than the non-breeding season. The results of real-time quantitative PCR also showed that the mRNA levels of SPAG11A and AR in the epididymis during the breeding season were significantly higher than those of the non-breeding season. In addition, the circulating testosterone, follicle- stimulating hormone and luteinizing hormone levels in the squirrels were higher in the breeding season compared with those in the non-breeding season. Taken together, these results implied that SPAG11A might be involved in regulating seasonal changes in epididymal functions of the wild ground squirrels.
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Affiliation(s)
- Wenyang Yu
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Ziwen Zhang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Pei Liu
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Xiaoying Yang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Haolin Zhang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Zhengrong Yuan
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Yingying Han
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
| | - Qiang Weng
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing.
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Xu W, Guo Y, Xiang Y, Yang ZW. Is there section deformation resulting in differential change of nuclear numerical densities along the z axis of thick methacrylate or paraffin sections? Microsc Res Tech 2019; 82:1575-1583. [PMID: 31218785 DOI: 10.1002/jemt.23323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 05/26/2019] [Accepted: 06/05/2019] [Indexed: 11/10/2022]
Abstract
The optical disector, a three-dimensional counting frame or probe in stereology, is often positioned in the middle (depth) of a thick section for unbiased nuclear counting. Using 30-40 μm thick methacrylate or paraffin sections for nuclear counting of neurons with the optical disector, however, some studies showed markedly higher nuclear densities at 10% of the section thickness near the top or bottom surface of the section, suggestive of deformation of section along its z axis and thus affecting the number estimation. To verify the findings, this study obtained two sets of 12-14 methacrylate sections (average thicknesses 21.7 and 29.4 μm) and two sets of 12 paraffin sections (average thicknesses 13.8 and 29.2 μm) from mature rat testes. Each section was used to count round spermatid nuclei in the seminiferous epithelium densely packed with the cells, using 3-4 consecutive disectors placed vertically (along the z axis of the section) from the top surface of the section, through the whole section thickness (two sets of methacrylate and paraffin sections) or in 80-83% of the thickness (other sections). The results demonstrated that, overall, there were no considerable nonuniform changes of the nuclear densities along the z axis of the sections.
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Affiliation(s)
- Wei Xu
- Experimental Teaching Center of Functional Science, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yang Guo
- Morphometric Research Laboratory, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yu Xiang
- Morphometric Research Laboratory, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Zheng-Wei Yang
- Morphometric Research Laboratory, North Sichuan Medical College, Nanchong, Sichuan, China
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