PMID- 19227199 OWN - NLM STAT- MEDLINE DCOM- 20090409 LR - 20190917 IS - 0030-154X (Print) IS - 0030-154X (Linking) VI - 85 IP - 3 DP - 2008 Nov TI - The presence of intra-tubular lymphocytes in normal testis of the mouse. PG - 91-6 AB - Spermatoza contain various autoimmunogenic materials, which are recognized as foreign by the self immune system. Therefore, the blood-tesits-barrier (BTB) formed by Sertoli cells, basal lamina and myoid cells protects autoimmunogeneic spermatozoa from attack by the self immune system. However, the BTB at the tubuli recti (TR) and the rete testis (RT) is known to be incomplete against humoral substances. We investigated here whether the BTB is physiologically penetrated by lymphocytes in mice. We performed light and electron microscopical observation of the seminiferous tubules (ST), the TR and the RT in normal C3H/IHe mice. Although no lymphocytes were observed inside the ST, a very few lymphocytes could be found beyond the basal lamina of the TR and the RT. These lymphocytes were close to testicular spermatozoa in the TR lumen. These findings provide a possibility that lymphocytes may gain access to autoantigens of spermatozoa inside the TR and RT under physiological conditions in mice. FAU - Naito, Munekazu AU - Naito M AD - Department of Anatomy, Tokyo Medical University, Tokyo, Japan. munekazu@tokyo-med.ac.jp FAU - Terayama, Hayato AU - Terayama H FAU - Hirai, Shuichi AU - Hirai S FAU - Qu, Ning AU - Qu N FAU - Moriyama, Hiroshi AU - Moriyama H FAU - Itoh, Masahiro AU - Itoh M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Okajimas Folia Anat Jpn JT - Okajimas folia anatomica Japonica JID - 0401014 RN - 0 (Autoantigens) SB - IM MH - Animals MH - Autoantigens/immunology MH - Autoimmunity/*physiology MH - Basement Membrane/immunology/ultrastructure MH - Blood-Testis Barrier/immunology/*ultrastructure MH - Lymphocytes/immunology/*ultrastructure MH - Male MH - Mice MH - Mice, Inbred C3H MH - Microscopy, Electron, Transmission MH - Rete Testis/immunology/*ultrastructure MH - Seminiferous Tubules/immunology/*ultrastructure MH - Sertoli Cells/immunology/ultrastructure MH - Spermatogenesis/immunology MH - Spermatozoa/immunology/ultrastructure MH - Testis/immunology/*ultrastructure EDAT- 2009/02/21 09:00 MHDA- 2009/04/10 09:00 CRDT- 2009/02/21 09:00 PHST- 2009/02/21 09:00 [entrez] PHST- 2009/02/21 09:00 [pubmed] PHST- 2009/04/10 09:00 [medline] AID - 10.2535/ofaj.85.91 [doi] PST - ppublish SO - Okajimas Folia Anat Jpn. 2008 Nov;85(3):91-6. doi: 10.2535/ofaj.85.91.