background: spermatogonial stem cells (sscs), a subset of undifferentiated type a spermatogonia, are the foundation of complex process of spermatogenesis and could be propagated in vitro culture conditions for long time for germ cell transplantation and fertility preservation. objective: the aim of this study was in vitro propagation of human spermatogonial stem cells (sscs) and improvement of ...

OBJECTIVES Kallikrein gene 5 (KLK5; formerly designated as kallikrein-like gene 2, or human stratum corneum tryptic enzyme) is one of the new members of the human kallikrein gene family on chromosome 19q13.4. Although it is expressed at low levels in various tissues, KLK5 expression is highest in the human mammary gland and testis. Previous investigations have established that the expression of...

Boys faced with future sterility as a result of the need of a sterilizing cancer therapy might avoid this fate by engraftment of cryopreserved immature testicular tissue after therapy is completed. Efforts to address this important survivorship issue have been encouraged by reports of the long-term survival and proliferation of human spermatogonia after xenotransplant of cryopreserved immature ...

BACKGROUND Grafting of testicular tissue into immunodeficient mice has become an interesting and promising scientific tool for the generation of gametes and the study of testicular function. This technique might potentially be used to generate sperm from patients whose testes need to be removed or are destroyed due to therapeutic intervention or as a consequence of disease. Here we explore whet...

By using the positional candidate gene approach, we identified a novel putative serine/threonine kinase substrate gene that maps to chromosome 19q13.3. Screening of expressed sequence tags and reverse transcription-polymerase chain reaction of total RNA from human tissues allowed us to establish the expression of the gene and delineate its genomic organization (GenBank Accession No. AF200923). ...

background: septins are an evolutionary conserved group of gtp-binding and filament-forming proteins that have diverse cellular roles. an increasing body of data implicates the septin family in the pathogenesis of diverse states including cancers, neurodegeneration, and male infertility. objective: the objective of the study was to evaluate the expression pattern of septin14 in testis tissue of...

background: testicular torsion and detorsion causes reperfusion injury which damages the testicular tissue and affects the quality of sperm. deterioration in the quality of sperm worldwide is the recent scenario and one of its reasons is testicular ischemic/ reperfusion (ir) injury. therefore the present study aims at producing new drugs for the treatment of testicular ir injury. methods: 42 an...