HORMONE BLOOD LEVELS AND THEIR INTER-RELATIONSHIPS IN NORMAL MEN AND MEN WITH BENIGN PROSTATIC HYPERPLASIA (BPH)

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Abstract
In 128 non-hospitalized men (age range 36–65 years) rectal palpation revealed in 54 cases an enlargement of the prostate (group II), which was very distinct in 20 cases (group III). The measurement of testosterone (T), 5α-dihydrotestosterone (DHT), 5α-androstane-3α,17β-diol (3α-diol) oestradiol (Oe2), sex-hormone-binding-globulin binding capacity (SHBG), luteinizing hormone (LH), follicle stimulating hormone (FSH) and prolactin (Prl) in the blood of normal men (group I) and those with BPH (group II or III) demonstrated no significant differences between the three groups when respective age ranges were compared. A significant increase of FSH and decrease of 3α-diol with age was seen in the normal group (I), which was similar but less pronounced in BPH (groups II and III). A distinct increase of DHT with age was found in BPH (group II), which was not so dominant in normal men (group I). From these data it is concluded that the conversion of DHT to 3α-diol might be reduced in older males independent from the occurrence of BPH and that the hyperplastic prostate possibly secretes significant amounts of DHT into the circulation. These results are discussed with respect to their possible role in the pathogenesis of BPH.