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  • 1
    ISSN: 1432-1440
    Keywords: Germ cell tumors ; Gonadal toxicity ; Chemotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The impact of aggressive chemotherapy on reproductive and endocrine gonadal function was prospectively studied in 44 patients with germ cell tumors. Diagnostic procedures to determine gonadal toxicity consisted of hormone determinations, semen analyses, interviews with a standardized questionnaire, and gonadal histology. After chemotherapy all patients showed elevated serum levels of follicle-stimulating hormone (FSH) and azoospermia due to germ cell and stem cell loss. Recovery of spermatogenesis, as indicated by normalization of serum FSH levels and sperm density, occurred in 77% of the patients 25–60 months after cessation of chemotherapy. In all patients serum testosterone and luteinizing hormone (LH) values remained within normal limits after therapy indicating resistance of Leydig cells to cytotoxic drugs. Three patients fathered four healthy children after completion of chemotherapy. These data suggest significant reproductive dysfunction in all men treated for germ cell tumors. However, most patients showed late and complete recovery of spermatogenesis. In contrast, endocrine gonadal function was unaffected after chemotherapy in all patients. FSH and LH are feasible markers to assess drug-induced gonadal toxicity.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 22 (1994), S. 21-23 
    ISSN: 1434-0879
    Keywords: Bladder cancer ; Photodynamic therapy ; Intravenous injection ; Intravesical instillation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Photodynamic therapy (PDT) consists in administration of a photosensitizer and subsequent irradiation of the tumor with visible light. Routinely the photosensitizer is given intravenously (i.v.). The goal of our study was to examine whether intravesical (i.b.) instillation of the photosensitizer for PDT of bladder cancer might be feasible. Therefore, the uptake of chlor-aluminum-sulfonated phthalocyanine (CASPc) in bladder, bladder tumor, skin, and muscle in a rat bladder cancer model after i.v. injection and i.b instillation was compared. The efficacy of PDT after either method of administration was also evaluated. The CASPc concentration in bladder tumor after i.v. injection was approximately 1.5-fold that after i.b. instillation. The ratio of CASPc concentration between bladder tumor and normal bladder was approximately 2:1 after administration by either route. There was no systemic absorption of CASPc after i.b. instillation; hence no systemic side effects are expected. PDT showed similar effects on bladder tumor after either method of administration, but less side effects on normal bladder wall after i.b instillation. Our results demonstrate that i.b. instillation of CASP for PDT of superficial bladder cancer seems to have advantages over i.v. injection.
    Type of Medium: Electronic Resource
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