Erma Safitri, - and Mas'ud Hariadi, - (2019) Comparison of Biotechnological Culture of Hypoxia-Conditioned Rat Mesenchymal Stem Cells with Conventional in Vitro Culture of Normoxia-Conditioned Rat Mesenchymal Stem Cells for Testicular Failure Therapy with Low Libido in Rats. Veterinary World, 12 (6). pp. 916-924. ISSN 0972-8988 E-ISSN 2231-0916

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Abstract

Aim: Biotechnological culture of hypoxia-conditioned (CH) rat mesenchymal stem cells (rMSC-CH) for testicular failure therapy with low libido improves the functional outcome of the testicle for producing spermatogenic cells and repairs Leydig cells in rats (Rattus norvegicus). Materials and Methods: In the first group (T1), rats with testicular failure and low libido were injected with normoxiaconditioned (CN) rMSCs (21% oxygen); in the second group (T2), rats with testicular failure and low libido were injected with rMSC-CH (1% oxygen); in the negative control group (T−), rats with normaltestis were injected with 0.1 mL phosphate-buffered saline (PBS); and in the sham group (TS), rats with testicular failure and low libido were injected with 0.1 mL of PBS. Results: Vascular endothelial growth factor expression, as the homing signal, in the groups T2, T−, T1, and TS was 2.00±0.5%, 2.95±0.4%, 0.33±0.48%, and 0±0%, respectively. The number of cluster of differentiation (CD)34+ and CD45+ cells in the groups T− and TS was <20%, whereas that in T1 and T2 groups was >30% and >80%, respectively, showing the mobilization of hematopoietic stem cells (HSCs). The number of spermatogenic cells (spermatogonia, primary spermatocytes, secondary spermatocytes, and spermatid) decreased significantly (p<0.05) in TS compared with that in T−, T1, and T2, whereas that in T2 did not show a significant (p>0.05) decrease compared to that in T−. The improvement in libido, based on the number of Leydig cells producing the hormone testosterone for libido expression, did not increase in T1, whereas T2 was able to maintain the number of Leydig cells significantly compared to that between TS and T1. Conclusion: rMSC-CH culture for testicular failure with low libido showed improvement in the functional outcome of the testicle and in repairing Leydig cells.

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