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  • 1
    ISSN: 0022-4731
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: Hairy Cell Leukemia ; Deficiency ; IFNα production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since the application of low doses of IFN-alpha is necessary to maintain remissions in Hairy Cell Leukemia (HCL) it is of interest whether peripheral blood mononuclear cells (MNC) of HCL patients can be induced in vitro to produce IFN-alpha. 9 patients suffering from advanced HCL were included in the study. The diagnoses were confirmed by characteristic findings in peripheral blood and bone marrow biopsies. For IFN treatment we initially used natural IFN-alpha (Bioferon) and switched later to recombinant IFN-alpha2 (Boehringer). MNC of 5 patients before IFN therapy and of 6 patients during IFN therapy (2–47 weeks) were induced by phythemagglutinin (PHA), Corynebacterium parvum (C.p.), and sendai virus (SV). PHA is known to induce IFN-gamma. Both, C.p. and SV induced IFN-alpha but no IFN-gamma in MNC of healthy controls and of IFN treated breast cancer patients. In HCL patients normal antiviral activities could be induced by PHA. Zero or only low antiviral activities could be induced in MNC from 9 patients tested on 22 occasions. It is concluded that MNC from patients with advanced HCL can be induced to produce IFN-gamma but no IFN-alpha. Since IFN-alpha but not IFN-gamma is produced by monocytes it is likely that reduced numbers of monocytes which were found in our HCL patients before and during IFN treatment account for the described deficiency of IFN-alpha production.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0711
    Keywords: Cervix neoplasms ; Interferon-gamma ; Papillomaviruses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: Dose dependent response of cervical intraepithelial neoplasia (CIN) to topically administered interferon (IFN) gamma was assessed and compared with conventional laser therapy.Patient and methods: 33 women were included in a randomized phase 11 trial which was double blinded for IFN dosages. Twenty-four patients received IFN gamma-1β gel and a control group of nine patients was treated with laser surgery. 18 patients had smears suggesting CIN II and 15 patients had smears suggesting CIN III. The response was assessed 6 months after starting of IFN gamma-1β treatment or having laser surgery.Results: Topical IFN gamma-1β treatment gave a cure rate of 42% independent of IFN dosage as compared to an 89% cure rate with laser therapy (P = 0.02). Patients with CIN II responded better compared with patients with CIN III. Current smokers showed a significantly lower cure rate whereas use of oral contraceptives (OC) did not influence response. High viral load with high risk types of human papillomaviruses (HPV) was associated with a better response.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0711
    Keywords: Key words: Cervix neoplasms ; Interferon-gamma ; Papillomaviruses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract.  Objective: Dose dependent response of cervical intraepithelial neoplasia (CIN) to topically administered interferon (IFN) gamma was assessed and compared with conventional laser therapy. Patient and methods: 33 women were included in a randomized phase II trial which was double blinded for IFN dosages. Twenty-four patients received IFN gamma-1β gel and a control group of nine patients was treated with laser surgery. 18 patients had smears suggesting CIN II and 15 patients had smears suggesting CIN III. The response was assessed 6 months after starting of IFN gamma-1β treatment or having laser surgery. Results: Topical IFN gamma-1β treatment gave a cure rate of 42% independent of IFN dosage as compared to an 89% cure rate with laser therapy (P = 0.02). Patients with CIN II responded better compared with patients with CIN III. Current smokers showed a significantly lower cure rate whereas use of oral contraceptives (OC) did not influence response. High viral load with high risk types of human papillomaviruses (HPV) was associated with a better response.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1335
    Keywords: Interferon plus MPA ; Advanced renal cell cancer ; Medroxyprogesterone acetate (MPA)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The response rates in metastatic renal cell cancer (RCC) after chemotherapy, hormonal treatment, or immunotherapy rarely exceed 15%. Recently, interferon alpha (IFNα) was used for treatment of this disease in several studies which also demonstrated response rates of 15%. In order to test whether IFN therapy combined with hormones would result in higher response rates we compared single agent IFN therapy with a combined therapy of rIFNα 2C plus medroxyprogesterone acetate (MPA) in a randomized multicenter trial. The rIFNα 2C (2MU) was given s.c. 5 times per week for 8–12 weeks and subsequently once weekly until week 48. In the combined treatment, 750 mg MPA was given p. o. daily until week 48 in addition to the IFN as described. The overall response rate in 93 evaluable patients was 5.4%, corresponding to 2 complete and 3 partial responses. Median survival was 7 months in both treatment groups. These data confirm the ineffectivity of low IFN doses for treatment of RCC. The low response rate is not increased by addition of MPA to IFN. The analysis of other IFN studies suggests that not only IFN doses but also IFN sources may influence response rates in metastatic RCC.
    Type of Medium: Electronic Resource
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