Manipulation of Fish Germ Cell: Visualization, Cryopreservation and Transplantation

Germ cell transplantation in fish: basic biology and biotechnological applications

Immature germ cell conception-in vitro germ cell manipulation.

Experimental studies in laboratory animals have shown that successful conception can be achieved by fertilizing oocytes with immature male germ cells. This gave rise to the concept that immature germ cells recovered from the testes of azoospermic men with maturation arrest may be used for assisted reproduction. However, in contrast to using germ cells recovered from healthy animals, clinical ap...

Male germ cell transplantation in livestock.

Male germ cell transplantation is a powerful approach to study the control of spermatogenesis with the ultimate goal to enhance or suppress male fertility. In livestock animals, applications can be expanded to provide an alternative method of transgenesis and an alternative means of artificial insemination (AI). The transplantation technique uses testis stem cells, harvested from the donor anim...

Ethics of Tissue and Stem Cell Transplantation

Tissue and cell transplantation are regarded as a popular procedure in clinical sciences, prospecting a new horizon for several incurable diseases. Along with its usefulness, many ethical concerns accompany this development. The ethical issue of organ transplant is unique to the source used which includes: living related, living unrelated, cadaveric, and xenotransplant. Obtaining organs has a s...

Promise and limitations of germ cell transplantation in the testis.

In 1994, the first successful stem cell transplantation in the mammalian testis was reported (Brinster and Zimmermann, 1994). In the early studies, a mixture of germ cells from either mouse or rat testes was successfully transplanted by microinjection into a germ cell-depleted recipient mouse testis (Clouthier et al, 1996). Stem cells in this mixture colonized the repopulation of all of the ger...