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Saturday, April 25, 2020 | History

5 edition of The Male Germ Cell found in the catalog.

The Male Germ Cell

Spermatogonium to Fertilization (Annals of the New York Academy of Sciences, Vol 637)

by Bernard Robaire

  • 202 Want to read
  • 21 Currently reading

Published by New York Academy of Sciences .
Written in English

    Subjects:
  • Cellular biology,
  • Cytology,
  • Reproductive medicine,
  • Spermatogonia,
  • Human Reproduction,
  • Animals,
  • Science/Mathematics,
  • physiology,
  • Mammals,
  • Congresses,
  • Spermatogenesis

  • The Physical Object
    FormatHardcover
    Number of Pages510
    ID Numbers
    Open LibraryOL8267245M
    ISBN 100897667093
    ISBN 109780897667098


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The Male Germ Cell by Bernard Robaire Download PDF EPUB FB2

The male germ cell is designed for one purpose only: to reach the female gametes and to fertilize them. The various stages in the development of the male germ cell are characterized by proliferative phases, by the recombination of the maternal and paternal chromosomes, and by the differentiation and development of a specialized transport Format: Paperback.

Germ cells are the embryonic precursors of the gametes. They are set aside from the somatic cell lineages early in the development of most species.

In the mouse. the germ cells, once they have formed, migrate through the tissues of the embryo to the gonad primordia (genital ridges), where they coassemble with somatic gonadal cells to form the sex cords.

THE FASCINATION The male germ cell is the only cell of the human organism that leaves the body when it has achieved its final, highly sophisticated structure and properties.

The male germ cell is designed for one purpose only: to reach the female gametes and to fertilize them. The various stages in. A gamete (/ ˈ ɡ æ m iː t /; from Ancient Greek γαμετή gamete from gamein "to marry") is a haploid cell that fuses with another haploid cell during fertilization in organisms that sexually species that produce two morphologically distinct types of gametes, and in which each individual produces only one type, a female is any individual that produces the larger type of.

Sertoli Cell Biology, Second Edition summarizes the progress since the last edition and emphasizes the new information available on Sertoli/germ cell interactions. This information is especially timely since the progress in the past few years has been exceptional and it relates to control of sperm production in vivo and in vitro.

Similarities Between Male and Female Germ Cell 5. Side by Side Comparison – Male vs Female Germ Cell in Tabular Form 6.

Summary. What is Male Germ Cell. In the context of male reproduction, the reproductive germ cell is known as the sperm. Male germs cells are heterozygous with the presence of X and Y chromosomes.

THE FATE OF THE MALE GERM CELL The destiny of any individual germ cell is determined by a program that we know only in fragments. On the one hand every human male is able to produce many billions of germ cells in his lifetime, yet the chance of any single sperm reaching and fertilizing the female germ cell is exceedingly : gamete [gam´ēt] 1.

one of two haploid reproductive cells, male (spermatozoon) and female (oocyte), whose union is necessary in sexual reproduction to initiate the development of a new individual.

the malarial parasite in its sexual form in a mosquito's stomach, either male (microgamete) or female (macrogamete); the latter is fertilized by the. The male germ cell is designed for one purpose only: to reach the female gametes and to fertilize them. The various stages in the development of the male germ cell are characterized by proliferative phases, by the recombination of the maternal and paternal chromosomes, and by the differentiation and development of a specialized transport.

In addition to surrounding the stem cell to provide a regulatory niche, the Sertoli cell extends ~90 μm from the basement membrane to the lumen of the seminiferous tubule, contacting and surrounding germ cells in many stages of differentiation. Furthermore, an individual germ cell may associate with more than one Sertoli cell (2, 13).

Near the Cited by: Germ-cell tumours occur when cancer develops from germ cells outside of the ovaries or testicles. Baby girl with a huge facial tumour flown to UK for treatment on rare cancer; Nine-month-old Ainul Mardhiah Ahmad Safiuddin suffers from a germ cell tumour - a rare cancer which has left her with a growth enveloping her entire mouth.

Primordial Germ Cells Migrate into the Developing Gonad. In most animals, including many vertebrates, the unfertilized egg is asymmetrical, with different regions of cytoplasm containing different sets of mRNA and protein molecules (discussed in Chapter 21).

When the egg is fertilized and divides repeatedly to produce the cells of the early embryo, the cells that inherit Cited by: 2. This book is a timely document of advances made in the field of male gonad and germ cell research in the postgenomic era.

The coverage includes the role of Y chromosome genes in male reproduction, gene expression in spermatogonial stem cells and male germ cells, and the regulation of germ cell genes in reproduction and in germ cell tumors. Using the process of male germ cell development (spermatogenesis) as a reference, this review seeks to highlight the diverse roles of selected CDKs.

Cite this entry as: () Male Germ Cell. In: Goldstein S., Naglieri J.A. (eds) Encyclopedia of Child Behavior and Development. Springer, Boston, MA. This book is a comprehensive, multi-authored work on the structure and function of the mammalian testis.

The approach emphasizes gene expression, translation and production of specific gene products and the cellular and molecular regulation of these fundamental processes. Rather than provide a global survey of all aspects of male reproduction, this book stresses 5/5(2).

THE FATE OF THE MALE GERM CELL The destiny of any individual germ cell is determined by a program that we know only in fragments.

On the one hand every human male is able to produce many billions of germ cells in his lifetime, yet the chance of any single sperm reaching and fertilizing the female germ cell is exceedingly rare.

Derivation of male germ cells from induced pluripotent stem cells by inducers: A review Article (PDF Available) in Cytotherapy 20(3) February with Reads How we measure 'reads'. Male germ cell synonyms, Male germ cell pronunciation, Male germ cell translation, English dictionary definition of Male germ cell.

A reproductive cell having the haploid number of chromosomes, especially a mature sperm or egg capable of fusing with a.

Get this from a library. The fate of the male germ cell. [Richard Ivell; A F Holstein;] -- Papers from a December symposium present the latest research on fundamental aspects of sperm production and maturation and the destiny of spermatozoa within the female reproductive tract.

Evaluation of reproductive capacity in germ cell tumor patients following treatment with cisplatin, etoposide, and bleomycin. J Clin Oncol ; – Sometimes, a group of germ cells grows in a way that’s not normal.

A tumor forms. This usually happens in an ovary or testicle. You can also get a germ cell tumor in the brain, chest, belly. The Male Germ Cell: Spermatogonium to Fertilization (Annals of the New York Academy of Sciences) [Robaire, Bernard] on *FREE* shipping on qualifying offers. The Male Germ Cell: Spermatogonium to Fertilization (Annals of the New York Academy of Sciences)Cited by: Learn female germ cells with free interactive flashcards.

Choose from different sets of female germ cells flashcards on Quizlet. The male germ unit (MGU) consists of a stable association between the vegetative nucleus and germ cells (generative cell or sperm cell pair) [Dumas et al., ; Mogensen, ].

This reproductive unit is transported within the pollen tube and delivered to the embryo sac. Generative and sperm cells.

Extragonadal germ cell tumors form from developing sperm or egg cells that travel from the gonads to other parts of the body.

"Extragonadal" means outside of the gonads (sex organs).When cells that are meant to form sperm in the testicles or eggs in the ovaries travel to other parts of the body, they may grow into extragonadal germ cell tumors may. Diploid germ cells must undergo many rounds of cell division and create many new cells in order to produce haploid gametes.

This entire sequence of cells from germ cell to gamete is called a. Germ cell: Either the egg or the sperm cell; a reproductive cell. Each mature germ cell is haploid, meaning that it has a single set of 23 chromosomes containing half the usual amount of DNA and half the usual number of genes.

Except for the egg and the sperm, most cells in the human body contain the entire human genome. Also known as a gamete. Interestingly, it is the early migrating germ cells that share similar properties with embryonic stem cells and testicular germ cell tumors (Ezeh et al., ).

From what is known, the development of gonocytes in the fetal ovary follows a similar path in that OCT3/4 expression is reduced while VASA, Germ Cell Nuclear Antigen (GCNA) and DAZL are Cited by: 3.

Gonadal germ cell tumors. These are the type of tumors that develop in the reproductive organ (gonad) of the child such as: Ovarian germ cells - For the most part, ovarian germ cell tumors have been shown to develop in one ovary among girls between the ages of 10 and In the event that they are cancerous, these ovarian germ cell tumors are.

Therefore, DUO1 acts as a network trigger in male germline development and sets up and later responds to the DAZ1/DAZ2 node to ensure germ cell division and correct specification of the gametes. DUO1 and DAZ1/2 are highly conserved in angiosperms, suggesting that the DUO1-DAZ1/DAZ2 regulatory module is an ancient developmental feature of the Cited by: 1.

(Refer to the PDQ summary on Childhood Central Nervous System Germ Cell Tumors Treatment for information about the treatment of intracranial GCTs.).

Incidence. Childhood GCTs are rare in children younger than 15 years, accounting for approximately 3% of cancers in this age group.[] In the fetal/neonatal age group, most extracranial GCTs are benign teratomas occurring at.

Extragonadal Germ Cell Tumors Levels of serum α-fetoprotein are elevated in endodermal sinus tumors and embryonal carcinoma. Primary Mediastinal Germ Cell Tumor The mediastinum is the most common site of extragonadal germ cell tumors [11], con-stituting 50–70% of all extragonadal germ cell tumors.

In adults, extragonadal germ. The testicles are two small, egg-shaped glands located close to the penis. The loose skin that surrounds them is called the les contain many specialized cells, including germ cells, which make sperm, and other specialized cells that make testosterone.

Testicular cancer is a relatively rare disease. Management of paediatric extracranial germ-cell tumours carries a unique set of challenges.

Germ-cell tumours are a heterogeneous group of neoplasms that present across a wide age range and vary in site, histology, and clinical behaviour. Patients with germ-cell tumours are managed by a diverse array of specialists. Thus, staging, risk stratification, and treatment Cited by: 9.

Sex chromosomes precisely recapitulate stereotypical epigenetic programming in a timely and spatially-coordinated manner. In females, one of the X chromosomes is inactivated for dosage compensation of X-linked genes. In males, sex chromosomes are inactivated from meiosis to spermiogenesis in a process that is essential for germ cell developments.

In C. elegans germ cells are a unique tissue in three important ways. As is true in all metazoa, C. elegans germ cells are both pluripotent and immortal, in that they give rise to all cell types in the next generation, and also produce all subsequent generations.

Secondly, the germline is the only adult tissue that is maintained by stem cells that constantly replenish its population, as. Preface. Male germ cells and cancer: a connection among pluripotency, differentiation and stem cell biology Massimo De Felici and Susanna Dolci Int.

Dev. Biol. () Primodial germ cells, male germ cells and germ cell tumors. A lifetime of migration Peter Donovan and Christopher Wylie. Polycystin-1 regulates a number of cellular processes through the formation of complexes with the polycystin-2 ion channel or with other signal transduction proteins.

Polycystin-1 is expressed in many tissues but other members of this gene family are distributed in a more restricted fashion. PKDREJ expression has been detected only in the mammalian testis, where it is restricted to Cited by: that some germ cells become sperm, and others become oocytes or eggs.

Spermatocytes and oocytes are usually produced in male and female animals, respectively, but C. elegans is uniquely suitable for studying the control of these cell fates because both types of cells are made from a common pool of progenitors in XX hermaphrodites.

In males the primary germ cell becomes a primary spermatocyte, which undergoes two rounds of a typical meiotic division to produce 4 haploid spermatids.

These spermatids differentiate into motile, highly simplified sperm cells, which are the fully mature male gametes.During spermatogenesis, most male germ cells undergo apoptosis, and the cytoplasmic portions of the elongating spermatids are shed as residual bodies (RB).

Both apoptotic germ cells (AGC) and RB must be phagocytosed by Sertoli cells, which are essential to maintain testicular homeostasis for normal spermatogenesis.

The phagocytosis of AGC and RB by Sertoli cells .Spermatogenesis is the process by which the male germ line stem cells (spermatogonial stem cells) divide and differentiate to produce sperm. Spermatogonial stem cells can be considered "eternal" or "immortal" germ cells because they are present from birth to death, they have the capacity to give rise to new stem cells, and they produce sperm.