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  • 1985-1989  (2)
  • 1980-1984
  • 1975-1979
  • Delta carbon-14  (1)
  • Experimentally induced  (1)
  • 1
    ISSN: 1434-0879
    Keywords: Canine BPH ; Experimentally induced ; Androgen content ; Plasma estrogen ; Androgen receptor ; Estrogen receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The results of hormonal investigation of effects of an antiandrogen, Oxendolone (OXD), alone or in combination with medroxyprogesterone acetate (MPA), on experimentally induced canine BPH are reported. Seventeen beagle dogs were divided into 5 groups: 2 castrate controls for. Group 0, 3 BPH controls for Group 1 which received 3α-androstanediol (3α-A) and estradiol (E2) for one year, and 12 dogs consisting of 3 groups which received 3α-A and E2 for 6 months followed by testosterone propionate (TP) and E2 for another 6 months. The last 3 groups were treated with either 200 mg/week of OXD (Group 3) or OXD+30 mg/week of MPA (Group 4), and otherwise untreated with these hormones (Group 2, T-E controls). On the blood hormone analysis, both T and 5α-dihydrotestosterone (DHT) were generally lowered in the T-E administered groups (Group 2, 3 and 4) compared to those in Group 1. While MPA significantly descreased these androgen levels, OXD did not influence at all. The concentrations of E2 were similar. Although T content in the prostate did not differ significantly within the experimental groups, DHT was the highest in Group 1 and the lowest in Group 4 and was nearly the same level to Group 0. MPA reduced tissue DHT content but OXD did not. In the receptor assay study, nuclear androgen receptor (AR) content in Group 3 and 4 was significantly lower than that in Group 1. No obvious decrease in nuclear AR content could be seen among the other groups. Significant differences were not observed in both the cytosol AR contents and in the cytosol and nuclear estrogen receptor (ER) contents, although they were generally low in Groups 3 and 4.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 91 (1986), S. 209-219 
    ISSN: 1573-5036
    Keywords: Carbon dating ; CO2 uptake from roots ; Delta carbon-14 ; Delta carbon-13 ; Ipomoea batatas ; Organic matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary To determine whether sweet potato (Ipomoea batatas (L.) Poir.) takes up organic matter through the roots from the medium, the concentrations of natural14C (δ14C) in plant organic matter, atmospheric CO2 and compost applied to media were examined under soil and sand culture conditions. In these experiments, three kinds of composts of different δ14C were used. CO2 derived from the mineralization of compost was continuously pumped out from the pots and its direct uptake by the leaves was prevented. δ14C of plant parts harvested after the 43 days experimental period were affected by the δ14C of the compost in the treatments where the compost of rice straw was applied, and which suggested that a significant amount of plant carbon was derived from the compost.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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