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Impact of Microbial Infection on Sperm Parameters of Seminal Bacteria in Asymptomatic Subfertile Males
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Sae Byuk Chang, Tae Jin Kim, Tae Heon Kim, Seung-Ryeol Lee, Young Kwon Hong, Dong Soo Park, Sun-Mi Cho, Dong Hyeon Lee, Young Dong Yu
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Urogenit Tract Infect 2023;18(3):82-92. Published online December 31, 2023
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DOI: https://doi.org/10.14777/uti.2023.18.3.82
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 Abstract
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- Purpose: This study examined the effects of asymptomatic bacteriospermia on the semen quality of subfertile males. The types of bacteria and their antibiotic susceptibility were also analyzed.
Materials and Methods: Semen was collected and analyzed from 510 subfertile males. One hundred and seventy-nine males showed bacteriospermia, while 331 males did not. The bacterial species, sperm parameters, hormone levels, underlying disease, and lifestyle patterns were compared between the two study groups.
Results: The bacteriospermic males showed significantly higher rates of leukocytospermia (p=0.001) and deoxyribonucleic acid (DNA) fragmentation than the non-bacteriospermic males. Sperm motility was significantly lower in the bacteriospermic males than in non-bacteriospermic males. The most common seminal bacterial species were Prevotella bivia (P. bivia, 41.3%) and Ureaplasma urealyticum (U. urealyticum, 13.4%). U. parvum showed the highest recurrence rates (31.8%) three months after the initial antibiotic treatment. Regarding the sperm parameters of bacteriospermic males, the sperm concentration, total motility, progressive motility, leukocytospermia, and DNA fragmentation were improved significantly after the initial antibiotics treatment. Multivariate logistic regression analyses revealed P. bivia, U. urealyticum, and U. parvum to be associated with the decreased motility and increased DNA fragmentation of spermatozoa. P. bivia was also associated with a decreased sperm concentration (p=0.002) and vitality (p=0.013).
Conclusions: Bacteriospermia decreased the sperm concentration, motility, normal morphology, and vitality. P. bivia is the most commonly observed bacteria in subfertile males. Appropriate antibiotic therapy of seminal bacteria species had a strong positive impact on improving the semen parameters.
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Predictor for Ureteral Stent Removal in Gynecological Cancer Patients with a Ureteral Obstruction
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Sung Hyun Ji, Young Kwon Hong, Young Dong Yu, Seung-Ryeol Lee
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Urogenit Tract Infect 2022;17(3):103-109. Published online December 31, 2022
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DOI: https://doi.org/10.14777/uti.2022.17.3.103
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Abstract
PDFPubReaderePub
- Purpose: This study investigated the possibility of ureteral stent removal in patients with gynecological cancer and ureteral obstruction.
Materials and Methods: From February 2010 to March 2022, the records of 121 patients with gynecological cancer and ureteral obstruction undergoing periodic ureteral stent replacement were reviewed retrospectively. Ureteral stent removal was attempted in patients who showed improvement in hydronephrosis on abdominal computed tomography (CT) after ureteral stent insertion and who lost symptoms. Success was defined as not having to reinsert the stent because there were no uncomfortable symptoms. The following were evaluated as predictors for ureteral stent removal: pre-removal serum creatinine, hypertension, diabetes, asymptomatic bacteriuria, type of gynecologic malignancy, prior radiotherapy, hydronephrosis laterality, obstruction level, hydronephrosis etiology, ureteral stent size, and ureteral stent duration. The hydronephrosis changes on abdominal CT were also evaluated.
Results: Among 121 patients, 74 with 81 obstructed ureters were evaluated. Of the 81 ureters, successful removal occurred in 30 (37.0%). There were significant differences between the success and failure cases regarding asymptomatic bacteriuria, prior radiotherapy, and hydronephrosis etiology. Logistic regression analysis showed that asymptomatic bacteriuria and hydronephrosis etiology were significant predictors of ureteral stent removal (p<0.05). There were also significant differences in the hydronephrosis changes depending on asymptomatic bacteriuria and hydronephrosis etiology (p<0.05).
Conclusions: In patients with gynecological cancer who have a ureteral stent in place due to ureteral obstruction, ureteral stent removal may be considered in patients who do not have asymptomatic bacteriuria or other etiologies, such as external ureteral pressure or ureteral cancer metastasis.
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