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Relationship_between_Serum_PSA_and_Testosterone_Levels_in_Two_Different_Geographic_Regions_of_Turkey.pdf | 1.38 MB |
Objective: We aimed to evaluate the relationship between serum total
testosterone and total prostate specific antigen (TPSA) levels in healthy men
from two different regions of Turkey.
Material and methods: The study
included two separate groups of healthy men from two geographically distinct regions
in Turkey. Group 1 included 119 patients with a mean age of 52.73±7.53 years
who visited Osmaniye State Hospital for routine check-up between January 2006
and January 2007. Group 2 consisted of 196 patients with a mean age of
50.32±7.84 years who were sent to outpatient clinics in Izmir Atatürk Teaching Hospital
between July 2008 and July 2009. The relationships among testosterone and TPSA levels
and patients’ age were evaluated.
Results: The mean TPSA levels for
Group 1 and Group 2 were 1.11±0.78 ng/mL and 1.75±1.06 ng/mL, respectively (p=0.5).
The mean testosterone levels in Group 1 (386.4±154.6 ng/dL) and Group 2
(383.9±170.6 ng/dL) showed no significant
difference (p=0.89). There was a positive correlation between the age of the patients
and testosterone level (r=0.22, p=0.015) in Group 1; however, in Group 2, there was a significant negative correlation between age and serum testosterone levels (r=-0.16, p=0.022). Serum testosterone level showed no significant
correlation with TPSA level in either group (Group 1: r=0.03, p=0.72; Group 2: r=-0.04, p=0.67).
Conclusion: Testosterone or TPSA
levels did not change between geographical regions of Turkey. However, the effect
of age on testosterone levels varies according to geographical regions. Further
studies with more patients are needed to confirm these preliminary results and to
investigate the impact of geographical regions on the oncologic features of prostate cancer and other urologic diseases