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Cryosurvival of isolated testicular cells and testicular tissue of tench Tinca tinca and goldfish Carassius auratus following slow-rate freezing.

Abstract：

:Experiments were carried out to test the efficiency of cryopreservation of whole testicular tissue in tench Tinca tinca and goldfish Carassius auratus and compare it to cryopreservation of isolated testicular cells. Additionally, effects of three cryoprotectants (dimethyl sulphoxyde - Me2SO, methanol - MeOH and ethylene glycol - EG) at three concentrations (1M, 2M and 3M) on post-thaw cell viability were assessed. Tissue pieces/isolated testicular cells were diluted in cryomedia and cryopreserved by slow-rate freezing (1°C/min to -80°C followed by a plunge into the liquid nitrogen). In both species Me2SO and EG generally yielded higher cryosurvival of early-stage germ cells than MeOH, while spermatozoa of neither species displayed such a pattern. In most cases a 3M>2M>1M viability pattern emerged in both species for both sample types regardless of the cryoprotectant used. Sample type (dissociated testicular cells vs testicular tissue) did not seem to affect viability rates of tench early-stage germ cells and goldfish spermatozoa, while the opposite was observed for tench spermatozoa and goldfish early-stage germ cells. Additionally, through histological analysis we displayed that tissue structure mainly remained unaltered after thawing in goldfish. These results indicate that cryopreservation of whole testicular tissue is indeed a valid alternative method to cryopreservation of dissociated testicular cells. Early-stage germ cells obtained from cryopreserved testis can be further used in different purposes such as transplantation into suitable donors while viable sperm might be used for fertilization when feasible.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Marinović Z,Lujić J,Kása E,Bernáth G,Urbányi B,Horváth Á

doi

10.1016/j.ygcen.2016.07.005

subject

Has Abstract

pub_date

2017-05-01 00:00:00

pages

77-83

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(16)30202-7

journal_volume

245

pub_type

杂志文章

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