Abstract
Testicular torsion/detorsion (T/D) can induce germ cells apoptosis, which may lead to impairment of spermatogenesis. FTY720, an agonist of the sphingosine-1-phosphate receptor 1 (S1PR1), inhibits apoptosis in ischemic stroke. We examined whether FTY720 could mitigate germ cell apoptosis in testicular T/D rats. Materials and Methods Adult male Sprague-Dawley rats were allocated to receive testicular T/D (the T/D group), T/D plus FTY720 (the T/D-FTY group), or T/D plus FTY720 plus the potent S1PR1 antagonist VPC23019 (the T/D-FTY-VPC group; n = 6 in each group). Sham control groups were run simultaneously. At 24 h after detorsion, rats were euthanized. Results Our data revealed that, in the ipsilateral twisted testes, sperm counts and expression of the S1PR1 of the T/D and the T/D-FTY-VPC groups were significantly lower than those of the T/D-FTY group (all P < 0.001). In contrast, signals of apoptotic cells stained by terminal deoxynucleotidyl transferase dUTP nick end labeling and the proapoptotic protein cleaved caspase-3 of the T/D, and the T/D-FTY-VPC groups were significantly stronger than those of the T/D-FTY group. Moreover, the terminal deoxynucleotidyl transferase dUTP nick end labeling signals mainly localized to germ cells. Conclusions FTY720 could mitigate testicular T/D-induced germ cell apoptosis, and the mechanisms may involve the S1PR1.
| Original language | English |
|---|---|
| Pages (from-to) | 155-164 |
| Number of pages | 10 |
| Journal | Journal of Surgical Research |
| Volume | 202 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - May 1 2016 |
| Externally published | Yes |
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Keywords
- Apoptosis
- Germ cells
- Ischemic reperfusion
- Testis
- Torsion
ASJC Scopus subject areas
- Surgery
Cite this
FTY720 inhibits germ cells apoptosis in testicular torsion/detorsion. / Shih, Hung Jen; Yen, Jiin Cherng; Chiu, Allen W.; Chow, Yung Chiong; Pan, Wynn H.T.; Huang, Chun Jen.
In: Journal of Surgical Research, Vol. 202, No. 1, 01.05.2016, p. 155-164.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - FTY720 inhibits germ cells apoptosis in testicular torsion/detorsion
AU - Shih, Hung Jen
AU - Yen, Jiin Cherng
AU - Chiu, Allen W.
AU - Chow, Yung Chiong
AU - Pan, Wynn H.T.
AU - Huang, Chun Jen
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Testicular torsion/detorsion (T/D) can induce germ cells apoptosis, which may lead to impairment of spermatogenesis. FTY720, an agonist of the sphingosine-1-phosphate receptor 1 (S1PR1), inhibits apoptosis in ischemic stroke. We examined whether FTY720 could mitigate germ cell apoptosis in testicular T/D rats. Materials and Methods Adult male Sprague-Dawley rats were allocated to receive testicular T/D (the T/D group), T/D plus FTY720 (the T/D-FTY group), or T/D plus FTY720 plus the potent S1PR1 antagonist VPC23019 (the T/D-FTY-VPC group; n = 6 in each group). Sham control groups were run simultaneously. At 24 h after detorsion, rats were euthanized. Results Our data revealed that, in the ipsilateral twisted testes, sperm counts and expression of the S1PR1 of the T/D and the T/D-FTY-VPC groups were significantly lower than those of the T/D-FTY group (all P < 0.001). In contrast, signals of apoptotic cells stained by terminal deoxynucleotidyl transferase dUTP nick end labeling and the proapoptotic protein cleaved caspase-3 of the T/D, and the T/D-FTY-VPC groups were significantly stronger than those of the T/D-FTY group. Moreover, the terminal deoxynucleotidyl transferase dUTP nick end labeling signals mainly localized to germ cells. Conclusions FTY720 could mitigate testicular T/D-induced germ cell apoptosis, and the mechanisms may involve the S1PR1.
AB - Testicular torsion/detorsion (T/D) can induce germ cells apoptosis, which may lead to impairment of spermatogenesis. FTY720, an agonist of the sphingosine-1-phosphate receptor 1 (S1PR1), inhibits apoptosis in ischemic stroke. We examined whether FTY720 could mitigate germ cell apoptosis in testicular T/D rats. Materials and Methods Adult male Sprague-Dawley rats were allocated to receive testicular T/D (the T/D group), T/D plus FTY720 (the T/D-FTY group), or T/D plus FTY720 plus the potent S1PR1 antagonist VPC23019 (the T/D-FTY-VPC group; n = 6 in each group). Sham control groups were run simultaneously. At 24 h after detorsion, rats were euthanized. Results Our data revealed that, in the ipsilateral twisted testes, sperm counts and expression of the S1PR1 of the T/D and the T/D-FTY-VPC groups were significantly lower than those of the T/D-FTY group (all P < 0.001). In contrast, signals of apoptotic cells stained by terminal deoxynucleotidyl transferase dUTP nick end labeling and the proapoptotic protein cleaved caspase-3 of the T/D, and the T/D-FTY-VPC groups were significantly stronger than those of the T/D-FTY group. Moreover, the terminal deoxynucleotidyl transferase dUTP nick end labeling signals mainly localized to germ cells. Conclusions FTY720 could mitigate testicular T/D-induced germ cell apoptosis, and the mechanisms may involve the S1PR1.
KW - Apoptosis
KW - Germ cells
KW - Ischemic reperfusion
KW - Testis
KW - Torsion
UR - http://www.scopus.com/inward/record.url?scp=84960970153&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84960970153&partnerID=8YFLogxK
U2 - 10.1016/j.jss.2015.12.035
DO - 10.1016/j.jss.2015.12.035
M3 - Article
C2 - 27083962
AN - SCOPUS:84960970153
VL - 202
SP - 155
EP - 164
JO - Journal of Surgical Research
JF - Journal of Surgical Research
SN - 0022-4804
IS - 1
ER -