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Mitochondrial derived peptide humanin improved semen quality, semen freezability, antioxidant status and in-vitro fertility in crossbred bull. [PDF]

Sci Rep
Gemeda AE, Singh M, Katiyar R, Kumar A, Pande M, Patra MK, Karikalan M, Srivastava N, Chandra V, Singh SK, Ghosh SK.   +10 more
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Equatorin is not essential for acrosome biogenesis but is required for the acrosome reaction

Biochemical and Biophysical Research Communications, 2014
The acrosome is a specialized organelle that covers the anterior part of the sperm nucleus and plays an essential role in mammalian fertilization. However, the regulatory mechanisms controlling acrosome biogenesis and acrosome exocytosis during fertilization are largely unknown.
Jianxiu, Hao, Min, Chen, Shaoyang, Ji, Xiaona, Wang, Yanbo, Wang, Xingxu, Huang, Lin, Yang, Yaqing, Wang, Xiuhong, Cui, Limin, Lv, Yixun, Liu, Fei, Gao   +11 more
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An organized distribution of acrosomal proteinase in rabbit sperm acrosomes

Journal of Experimental Zoology, 1975
AbstractAcrosomal proteinase was found to be present in a highly organized distribution within the acrosomes of rabbit spermatozoa by cytochemistry. This distribution consists of at least six linear loops of evenly spaced proteinase granules, which run diagonally across the flat side of the sperm head in a criss‐crossing pattern with the two most ...
R, Stambaugh, M, Smith, S, Faltas
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The acrosomal zonule

Tissue and Cell, 1982
A structure associated with the developing acrosome during spermiogenesis in the rat and the Chinese hamster is described. The acrosomal zonule first appears in the cap phase of spermiogenesis and can be detected at all stages of development until after spermiation. The role of the acrosomal zonule is discussed.
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Structure of the acrosomal bundle

Nature, 2004
In the unactivated Limulus sperm, a 60- micro m-long bundle of actin filaments crosslinked by the protein scruin is bent and twisted into a coil around the base of the nucleus. At fertilization, the bundle uncoils and fully extends in five seconds to support a finger of membrane known as the acrosomal process.
Michael F, Schmid, Michael B, Sherman, Paul, Matsudaira, Wah, Chiu   +3 more
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The Organized distribution of Acrosomal Proteinase within the Acrosomes of Rabbit Spermatozoa

Fertility and Sterility, 1975
Acrosomal proteinase was found to be present in a highly organized distribution in the acrosomes of rabbit spermatozoa, using cytochemistry. This distribution consists of at least six linear loops of evenly spaced proteinase granules, which run diagonally across the flat side of the sperm head in a criss-crossing pattern.
S, Faltas, M, Smith, R, Stambaugh
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The acrosome of eutherian mammals

Cell and Tissue Research, 2015
The acrosome is not just a bag of enzymes, most of which, if not all, are singly non-essential for sperm-oocyte interaction. The Golgi-derived acrosomal cap reveals some extraordinary development and structure particularities. The acrosome of eutherian spermatozoa basically consists of two parts, the anterior and equatorial segments; the present review
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Substructure of the mammalian acrosome

Journal of Ultrastructure Research, 1972
Acrosome ultrastructure was analyzed in the Chinese hamster, mouse, rat, and rabbit. The plasma membrane overlying the acrosome of Chinese hamster and mouse spermatozoa is coated with minute vesicles and tubules in specific regions. These vesicles and tubules are localized in an area on the surface of the sperm head which seems to have a “sticky ...
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Mammalian Sperm Acrosomal Enzymes and the Acrosome Reaction

1991
The sperm acrosome is an intracellular membrane-limited organelle that surrounds the anterior portion of the nucleus. It consists of an inner acrosomal membrane that is closely associated with the nucleus and is continuous with the outer acrosomal membrane. The acrosomal matrix proper is located between the two membranes.
L. J. D. Zaneveld, C. J. De Jonge
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[Acrosome reaction and fertilization].

Contraception, fertilite, sexualite (1992), 1994
The acrosome reaction that occurs after sperm capacitation, is an exocytotic event induced by a Ca++ influx. It plays an essential role during fertilization, by making spermatozoa able of penetrating the zona and capable of fusing with the egg plasma membrane. Zona pellucida is the natural inducer of the acrosome reaction. Binding of the sperm receptor
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