Kipandula W, Lampiao F
Department of Medical Laboratory Sciences, College of Medicine, University of Malawi, Blantyre, Malawi.
Department of Basic Medical Sciences, Division of Physiology, College of Medicine, University of Malawi, Blantyre, Malawi.
Malawi Med J. 2015 Dec;27(4):151-3.
The purpose of this study was to evaluate the semen profiles of bicycle taxi cyclists and healthy controls in Mangochi district, Malawi.
Semen samples were collected from young bicycle taxi cyclists after two to three days of sexual abstinence. A control group, comprising young men who were not bicycle taxi operators also submitted semen samples. Samples were left to liquefy for 30 minutes before measurements were conducted of volume, concentration, total motility, and progressive motility. This was followed by preparation of morphology slides. Light microscopy was used for sperm analysis.
Semen parameters such as volume (1.66 ± 0.18 mL vs. 3.64 ± 0.17 mL; p = 0.0001), concentration (28.31 ± 4.33 x 106/mL vs. 54.95 ± 5.93 × 106/mL; p = 0.02) , total motility (56.98% ± 8.22% vs. 56.98% ± 8.22%; p = 0.03), progressive motility (22.57% ± 3.35% vs. 59.69% ± 4.82%; p = 0.004), and morphology (6.98% ± 3.23% vs. 19.73% ± 2.32%; p = 0.006) were significantly reduced in the bicycle taxi cyclists compared to the healthy controls.
In this case-control study, bicycle taxi operators had lower semen volume, concentration, total motility, and progressive motility, as well as a higher concentration of abnormally shaped spermatocytes, compared to healthy controls.
本研究旨在评估马拉维芒戈奇区自行车出租车骑行者和健康对照组的精液状况。
在禁欲两到三天后，从年轻的自行车出租车骑行者中采集精液样本。一个由非自行车出租车司机的年轻男性组成的对照组也提交了精液样本。样本在液化30分钟后，进行体积、浓度、总活力和前向运动力的测量。随后制备形态学载玻片。使用光学显微镜进行精子分析。
与健康对照组相比，自行车出租车骑行者的精液参数，如体积（1.66±0.18毫升对3.64±0.17毫升；p = 0.0001）、浓度（28.31±4.33×10⁶/毫升对54.95±5.93×10⁶/毫升；p = 0.02）、总活力（56.98%±8.22%对56.98%±8.22%；p = 0.03）、前向运动力（22.57%±3.35%对59.69%±4.82%；p = 0.004）和形态（6.98%±3.23%对19.73%±2.32%；p = 0.006）均显著降低。
在这项病例对照研究中，与健康对照组相比，自行车出租车司机的精液体积、浓度、总活力和前向运动力较低，且异常形态精母细胞的浓度较高。
