Methotrexate was administered by intraperitoneal injection (100 mg/kg) to unirradiated mice, and to mice receiving varying doses of cranial irradiation. The animals were sacrificed 24 hours after injection, and methotrexate assays were performed on brain tissue. No methotrexate was detected in the
Studies on the permeability of the blood-testis barrier in stainless steel-administered mice
β Scribed by M.L. Pereira
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 644 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1065-6995
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Previous trials performed in our laboratory have demonstrated that stainless steel corrosion products induced morphological changes in mice seminiferous cells. In this study the functional nature of the bloodβtestis barrier was investigated, in view of the extesive use of this metallic alloy in orthopaedic surgery. The uptake of horseradish peroxidase by the seminiferous tubules was used as a tracer method being exposed in vitro for different periods of time and observed at the ultrastructural level. Both boundary cells as well as Sertoli cells of experimental group absorbed the tracer, as manifested by vesicles and vacuoles filled with the reaction product, evidencing its role within the testis. Germ cells were also able in the uptake of this macromolecule. However, the tracer did not spread into the junctional complexes between neighboring Sertoli cells, at any interval of time used in this study, demonstrating the functional integrity of this barrier.
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