A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.
WHAT DOES ACROSOME MEAN IN ENGLISH?
The acrosome is an organelle that develops over the anterior half of the head in the spermatozoa of many animals. It is a cap-like structure derived from the Golgi apparatus. Acrosome formation is completed during testicular maturation. In Eutherian mammals the acrosome contains digestive enzymes. These enzymes break down the outer membrane of the ovum, called the zona pellucida, allowing the haploid nucleus in the sperm cell to join with the haploid nucleus in the ovum. This shedding of the acrosome, or acrosome reaction, can be stimulated in vitro by substances a sperm cell may encounter naturally such as progesterone or follicular fluid, as well as the more commonly used calcium ionophore A23187. This can be done to serve as a positive control when assessing the acrosome reaction of a sperm sample by flow cytometry or fluorescence microscopy. This is usually done after staining with a fluoresceinated lectin such as FITC-PNA, FITC-PSA, FITC-ConA, or fluoresceinated antibody such as FITC-CD46. Human spermatozoön In the case of globozoospermia, the Golgi apparatus is not transformed into the acrosome, causing male infertility.
The definition of acrosome in the dictionary is a cap-like structure on the tip of a spermatozoon that releases enzymes on encountering the ovum allowing fusion with the ovum in the sexual reproductive process; this part of the process is known as the acrosome reaction.
The translations of acrosome from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «acrosome» in English.
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «acrosome».
FREQUENCY OF USE OF THE TERM «ACROSOME» OVER TIME
The graph expresses the annual evolution of the frequency of use of the word «acrosome» during the past 500 years. Its implementation is based on analysing how often the term «acrosome» appears in digitalised printed sources in English between the year 1500 and the present day.
Examples of use in the English literature, quotes and news about acrosome
10 ENGLISH BOOKS RELATING TO «ACROSOME»
Discover the use of acrosome in the following bibliographical selection. Books relating to acrosome and brief extracts from same to provide context of its use in English literature.
Human Sperm Acrosome Reaction
Induction. of. the. human. acrosome. reaction. by. rhuZP3. Christopher L.R.
Barratt1' and David P. Hornby2 ' University Department of Obstetrics and
Gynaecology, Jessop Hospital for Women, Sheffield S3 IRE, United Kingdom;
2Krebs Institute ...
Patrick Fénichel, Jean Parinaud, 1995
Acrosome Reaction (Binary) Acrosome-lntact Acrosome-Reacted FIGURE 8.1
Depiction of the acrosome reaction model for explaining the function of the acro-
some in fertilization. This model emphasizes two states for spermatozoa: ...
Daniel Mark Hardy, 2002
Cytoskeleton in Specialized Tissues and in Pathological States
During spermiogenesis the nuclear pore complexes disappear ahead of the
advancing margin of the acrosome (Fawcett and Chemes, 1979). The matrix
immediately surrounding the nucleus is regarded as an important structural
element of ...
J.E. Hesketh, I.F. Pryme, 1996
CURRENT TOPICS DEVELOPMENTAL BIOLOGY
vrs THE SPERM ACROSOME PROCESS When observed with the light
microscope a dense layer of DAB precipitate appears in the anterior apex of each
acrosome-reacted sperm. Electron microscopic examination shows the acrosome
Aron Arthur Moscona, Martin Friedlander, Alberto Monroy, 1980
CURR TOPICS IN MEMBRANES & TRANSPORT
equatorial segment of the acrosome which fuses first with the egg plasma
membrane (Bedford and Cooper, 1978; Bedford et al., 1979). It is important to
note that the plasma membrane above the equatorial segment can fuse with the
Nejat Du ̈zgu ̈nes ̧, Felix Bronner, 1988
Andrology: Male Reproductive Health and Dysfunction
144 10.8.3 Zona Penetration Test ............................. 144 10.9 Acrosome Reaction .
.............................................. 144 10.9.1 Zona-Induced Acrosome Reactions ........
145 10.9.2 Recombinant Zona Proteins .................... 145 10.10 Sperm–Egg
Eberhard Nieschlag, Hermann M. Behre, Susan Nieschlag, 2010
Acrosome Reaction: Introduction, Process, in Vitro ...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
Gaby Alez, 2012
Comparison of the localisation of muscarinic and nicotinic receptors in human
and sea urchin sperm (sp).Acr Acrosome; eq equatorial ring; p.acr post-
acrosomal region; midp midpiece;/7ag flagellum results (Dwivedi and Long 1989;
Baccetti et ...
Valeria Matranga, 2005
Dynamics of the Mammalian Sperm Head: Modifications and ...
The Afaf protein is abundantly expressed in round spermatids and is reported to
be localized in the inner and outer membranes of developing acrosomes;
however, the Afaf content of the acrosome is reported to decline as spermatids
Kiyotaka Toshimori, 2009
Proteomics of Spermatogenesis
Formation of acrosome and formation of sperm tail are two major transforming
events occurring during spermiogenesis. Spermiogenesis is relatively a long
process in mammals occupying time duration of about 14 days in mice and 22
days in ...
G. S. Gupta, 2006
10 NEWS ITEMS WHICH INCLUDE THE TERM «ACROSOME»
Find out what the national and international press are talking about and how the term acrosome is used in the context of the following news items.
Fluoride may damage female reproductive system
Genes such as Bmp15, Gdf9, H1oo, and ZP2 that are involved in oocyte growth and the induction of the acrosome reaction were also ... «Food Consumer, Jul 15»
UVA reproductive research could lead to male contraceptive
“One of the things that is so interesting about this protein is that as the acrosome forms, the equatorial segment appears to be specified very ... «Augusta Free Press, Jun 15»
Meet the Souped-up Version of ATP Synthase
V-ATPases in the acrosomal membrane of sperm acidify the acrosome. This acidification activates proteases required to drill through the ... «Discovery Institute, Jun 15»
Male infertility markers: Proteins influenced by reactive oxygen species
... normal physiological levels, which could lead to the failure of the spermatozoa head to develop the cap-like structure called the acrosome. «spectroscopyNOW.com, Mar 15»
How a man can EAT his way to healthier sperm, from Zita West
The head of the sperm is covered with a cap called the acrosome, a fine membrane that is vulnerable to damage and has to come off before the ... «Daily Mail, Feb 15»
Understanding your sperm analysis
... is five to six micrometres long and about three micrometres wide with a well-defined acrosome (cap) covering 40 to 70 per cent of the head. «Trinidad & Tobago Express, Sep 14»
The 10 best team logos in baseball history
... white, and blue into a logo without beating you over the head with it. It's almost enough to make you unsee the acrosome in every Reds logo. «SB Nation, Apr 14»
Sperm/Egg Fusion Depends on Pairing of His/Her Proteins
... perivitelline space that could bind to and efficiently neutralize incoming acrosome-reacted sperm to increase the potency of the spermblock.”. «Genetic Engineering News, Apr 14»
Seminal Plasma Removal Not Needed for All Stallions
Finally, the team carried out acrosome (a specialized structure on the head of the sperm that helps penetrate the egg during fertilization) ... «TheHorse.com, Mar 14»
Frozen out: Sperm proteins affected by cryopreservation
Such a study could also reveal which proteins are associated with motility and the processes of capacitation and acrosome reaction, which lead ... «spectroscopyNOW.com, Mar 14»
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