Search results for "Sertoli Cells"

showing 4 items of 4 documents

Nuclear localization of the protein encoded by the Wilms’ tumor gene WT1 in embryonic and adult tissues

1993

ABSTRACT The human Wilms’ tumor gene WT1 encodes a putative transcription factor implicated in tumorigenesis and in specifying normal urogenital development. We have studied the distribution of WT1 protein and mRNA using immunohistochemistry and in situ hybridization. Monoclonal antibodies were raised against a peptide specific to the first alternative splice site of WT1. Two antibodies specifically reacted on Western blot to this WT1 isoform. Immunofluorescence localized WT1 protein to podocytes during mesonephric and metanephric development. In situ hybridization revealed a similar pattern of expression except that WT1 mRNA was also present in metanephric blastema and renal vesicles. Mess…

MaleGene isoformcongenital hereditary and neonatal diseases and abnormalitiesmedicine.medical_specialtyBlotting WesternFluorescent Antibody TechniqueGene ExpressionUrogenital SystemIn situ hybridizationBiologyKidneyurologic and male genital diseasesPolymerase Chain ReactionInternal medicineGene expressionmedicineHumansRNA MessengerWT1 ProteinsMolecular BiologyTranscription factorIn Situ HybridizationCell NucleusMessenger RNAGranulosa CellsSertoli Cellsurogenital systemfungiZinc FingersWilms' tumormedicine.diseasefemale genital diseases and pregnancy complicationsWilms Tumor ProteinCell biologyDNA-Binding ProteinsCell nucleusmedicine.anatomical_structureEndocrinologyMesonephrosFemaleTranscription FactorsDevelopmental BiologyDevelopment
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New perspectives on the renal slit diaphragm protein podocin.

2011

Podocin is a critical component of the glomerular filtration barrier, its mutations causing recessive steroid-resistant nephrotic syndrome. A GenBank analysis of the human podocin (NPHS2) gene resulted in the possible existence of a new splice variant of podocin in the kidney, missing the in-frame of exon 5, encoding the prohibitin homology domain. Using RT–polymerase chain reaction and immunoblotting followed by sequence analysis, we are for the first time able to prove the expression of a novel podocin isoform (isoform 2), exclusively and constitutively expressed in human podocytes. Furthermore, we reveal singular extrarenal podocin expression in human and murine testis. Our data show the…

Gene isoformAdultMalePathologymedicine.medical_specialtyendocrine systemkidneySertoli cellsBlotting WesternImmunoblottingMolecular Sequence Datatestisurologic and male genital diseasesReal-Time Polymerase Chain ReactionFilamentous actinPathology and Forensic MedicineSertoli cell-only syndromeMiceYoung AdultmedicineAnimalsHumansProtein IsoformsSertoli cell-only syndromeAmino Acid SequenceProhibitinAgedKidneyMicroscopy ConfocalbiologyBase Sequenceurogenital systemPodocytesGene Expression ProfilingIntracellular Signaling Peptides and ProteinsMembrane ProteinsisoformMiddle Agedmedicine.diseaseSertoli cellfemale genital diseases and pregnancy complicationsWT-1medicine.anatomical_structureSlit diaphragmPodocinbiology.proteinOriginal ArticlepodocinModern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
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Ultrastructural changes of the intercellular relationship in impaired human spermatogenesis

1980

In seven hypo- or aspermic patients, electron microscopic investigations of the intercellular connections of the seminiferous tubule were performed. The analysis of cell junctions of Sertoli cells and germ cells revealed irregularities of the Sertoli-cell junctions, hypoplasias of occluding junctions, hypo- and hyperplasias of the Sertoli-spermatid cell junctions and abnormal formation of Sertoli cell junctions with early spermatids, spermatocytes, and spermatogonia. Gap junction-like cell membrane specializations were very rare. Intercellular cytoplasmic bridges of germ cells were always present together with these cells. One hypoplastic bridge connecting two spermatogonia was found. The r…

Maleendocrine systemBiologyCell junctionCell membraneGeneticsmedicineHumansSpermatogenesisCytoskeletonInfertility MaleGenetics (clinical)Blood–testis barrierSertoli CellsTight junctionurogenital systemDesmosomesSeminiferous TubulesSertoli cellSpermatidsSpermatozoaCell biologyMicroscopy ElectronIntercellular Junctionsmedicine.anatomical_structureSeminiferous tubuleSpermatogenesisGerm cellHuman Genetics
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Pregnancy in an azoospermic patient with markedly elevated serum follicle-stimulating hormone levels

1995

Objective To assess the possibility of achieving a pregnancy in an azoospermic patient with markedly elevated serum FSH level. Design A case report. Setting In vitro fertilization program at the Instituto Valenciano de Infertilidad. Patient An azoospermic patient with small testes and serum FSH level (38.7 mlU/mL) higher than three times normal. Testicular biopsy revealed Sertoli cell-only syndrome with focal spermatogenesis. Interventions Intracytoplasmic microinjection of testicular tissue-extracted spermatozoa. Main Outcome Measurements: Fertilization rate, cleavage rate, clinical pregnancy. Results Eight of 11 (73%) intact oocytes showed two pronuclei. All of them cleaved normally. Four…

AdultMaleendocrine systemmedicine.medical_specialtyMicroinjectionsmedicine.drug_classmedicine.medical_treatmentFertilization in VitroBiologyIntracytoplasmic sperm injectionAndrologyFollicle-stimulating hormonePregnancyInternal medicineTestismedicineHumansMicroinjectionAzoospermiaPregnancySertoli CellsIn vitro fertilisationurogenital systemObstetrics and GynecologyOligospermiamedicine.diseaseSpermatozoaEndocrinologyReproductive MedicineOocytesFemaleFollicle Stimulating HormoneGonadotropinSpermatogenesisFertility and Sterility
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