Aust J Zool 1973 Nov;21(4):491-9
Front Genet 2021 30;12:610116. Epub 2021 Apr 30.
School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia.
Spermatogenesis relies on complex molecular mechanisms, essential for the genesis and differentiation of the male gamete. Germ cell differentiation starts at the testicular parenchyma and finishes in the epididymis, which has three main regions: head, body, and tail. RNA-sequencing data of the testicular parenchyma (TP), head epididymis (HE), and tail epididymis (TE) from four bulls (three biopsies per bull: 12 samples) were subjected to differential expression analyses, functional enrichment analyses, and co-expression analyses. Read More
Trends Cell Biol 2021 Apr 15. Epub 2021 Apr 15.
School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia. Electronic address:
Delta (δ-) and epsilon (ε-) tubulin are lesser-known cousins of alpha (α-) and beta (β-) tubulin. They are likely to regulate centriole function in a broad range of species; however, their in vivo role and mechanism of action in mammals remain mysterious. In unicellular species and mammalian cell lines, mutations in δ- and ε-tubulin cause centriole destabilization and atypical mitosis and, in the most severe cases, cell death. Read More
J Anim Sci Biotechnol 2021 Feb 15;12(1):26. Epub 2021 Feb 15.
South Australian Research and Development Institute, Primary Industries and Regions SA, Reproductive Biology, Livestock Sciences, Turretfield Research Centre, 129 Holland Rd, Rosedale, South Australia, 5350, Australia.
Heat stress significantly impairs reproduction of sheep, and under current climatic conditions is a significant risk to the efficiency of the meat and wool production, with the impact increasing as global temperatures rise. Evidence from field studies and studies conducted using environmental chambers demonstrate the effects of hot temperatures (≥ 32 °C) on components of ewe fertility (oestrus, fertilisation, embryo survival and lambing) are most destructive when experienced from 5 d before until 5 d after oestrus. Temperature controlled studies also demonstrate that ram fertility, as measured by rates of fertilisation and embryo survival, is reduced when mating occurs during the period 14 to 50 d post-heating. Read More
Genes (Basel) 2021 01 30;12(2). Epub 2021 Jan 30.
Graham Centre for Agricultural Innovation (Charles Sturt University and NSW Department of Primary Industries), Charles Sturt University, Wagga Wagga, NSW 2678, Australia.
Reduced reproductive efficiency results in economic losses to the Australian sheep industry. Reproductive success, particularly after artificial insemination, is dependent on a number of contributing factors on both ewe and ram sides. Despite considerable emphasis placed on characterising ewe side contributions, little emphasis has been placed on characterising ram side contributions to conception success. Read More
Andrologia 2021 Apr 11;53(3):e13936. Epub 2021 Jan 11.
Department of Physiology, Ziauddin University, Karachi, Pakistan.
Altered protamine 1 (PRM1)/ protamine 2 (PRM2) mRNA ratio in testicular biopsy samples correlates with sperm quality and its fertilising ability. This study is planned to assess PRM1/ PRM2 mRNA ratio in subgroups of azoospermia to suggest a more reliable and accurate marker for assessing sperm quality in nonobstructive azoospermia (NOA). A cross-sectional study was done on testicular biopsy samples, taken from 106 azoospermic patients. Read More