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51.
应用高效液相色谱法检测男性不育患者精浆丙二醛水平 总被引:2,自引:0,他引:2
目的:探讨高效液相色谱法(HPLC)检测精浆中脂质过氧化产物丙二醛(MDA)水平的意义。方法:93例不育男性分为:阻塞性无精子症组(12例);非阻塞性无精子症组(15例);少精子症组(21例);弱精子症组(19例);少弱精子症组(16例);少弱畸精子症组(10例)。18例生育男性作为对照组。采用HPLC检测生育与不育男性精浆MDA含量。结果:生育组精浆MDA值除与阻塞性无精子症组差异无显著性(P>0.05)外,与其他各组相比均有极显著性差异(P均<0.01)。各不育男性组间精浆MDA值也有统计学差异。结论:应用HPLC检测精浆MDA水平是诊断活性氧产生过高所致男性不育的一个重要指标。 相似文献
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目的 探讨男性酒精依赖患者复饮的相关危险因素.方法 选取2018年7月1日至2019年6月30日在我科出院的男性酒精依赖患者,回访出院6个月内是否复饮,分为复饮组和未复饮组,收集两组相关临床资料并进行统计学分析.结果 120例男性酒精依赖患者出院6个月内复饮49例,复饮率40.83%,患者饮酒年限、饮酒量、戒断是有无幻... 相似文献
54.
MMPs与慢性子宫内膜炎及不孕症的研究 总被引:2,自引:0,他引:2
基质金属蛋白酶是一族依赖锌离子而降解各种细胞外基质的蛋白酶.基质金属蛋白酶的组织特异性抑制物是一组多功能基因家族,它们能特异性地抑制基质金属蛋白酶.基质金属蛋白酶-2和基质金属蛋白酶-9是最典型的代表,在子宫内膜均有表达.基质金属蛋白酶的组织特异性抑制物-1是基质金属蛋白酶-9的特异性抑制因子;基质金属蛋白酶的组织特异性抑制物-2是基质金属蛋白酶-2的天然抑制物.在胚胎植入等过程中,基质金属蛋白酶发挥着重要的作用.该文就基质金属蛋白酶-2和基质金属蛋白酶-9及其抑制物与慢性子宫内膜炎和不孕症的关系进行综述. 相似文献
55.
Borbála Eszter Hegyi Zoltan Kozinszky Attila Badó Edina Dombi Gábor Németh 《Journal of psychosomatic obstetrics and gynaecology》2013,34(4):311-317
Objective: To assess the psychological condition of men at the start of the infertility work-up.Methods: Men seeking an infertility evaluation for the first time were recruited. Depression and anxiety symptoms and subjective psychological burden were assessed with the Beck Depression Inventory (BDI), the Spielberger State-Trait Anxiety Inventory (STAI), and a visual analog scale (VAS).Results: Data from 113 patients were analyzed. The mean age of the patients was 33.3 (range: 23–54) years, whereas the mean duration of infertility was 16.3 (range: 0–96) months. Results from the BDI and STAI were 2.24 (SD: ±3.18) and 33.74 (SD: ±8.04). Mild depressive symptoms were found in 4.5% of patients, whereas anxiety reached an abnormal level in 4.9%. There were significant correlations between the results from the BDI score and the duration of infertility (p?=?.024), whereas the STAI and VAS scores showed no similar connection (p?=?.142 and p?=?.261, respectively). Among patients with infertility longer than 2 years, mild depressive symptoms occurred in 23.1%.Conclusion: Among men, the levels of depressive and anxiety symptoms were low at the start of the infertility work-up. Depressive symptom levels increased significantly with the duration of infertility, whereas anxiety levels and VAS scores did not demonstrate a similar correlation. 相似文献
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Gene expression changes induced by ochratoxin A in renal and hepatic tissues of male F344 rat after oral repeated administration 总被引:2,自引:0,他引:2
Arbillaga L Vettorazzi A Gil AG van Delft JH García-Jalón JA López de Cerain A 《Toxicology and applied pharmacology》2008,230(2):197-207
Ochratoxin A (OTA), a naturally occurring mycotoxin, is nephrotoxic in all animal species tested and is considered a potent renal carcinogen, particularly in male rats. Its mechanism of toxicity is still unknown, although oxidative stress appears to be a plausible mechanism. Therefore, the objective of this study was to identify the biological pathways that are modulated in vivo by OTA in male F344 rats in order to gain further insight into its mechanism of renal toxicity. Rats were gavaged daily with OTA (500 microg/kg bw) and gene expression profiles in target and non-target organs were analyzed after 7 and 21 days administration. As was expected, a time-dependent increase of OTA concentrations was found in plasma, kidney and liver, with the concentrations found in both tissues being quite similar. However, histopathological examinations only revealed changes in kidney; signs of nephrotoxicity involving single cell necrosis and karyomegalic nuclei were observed in the treated rats. The number of differentially expressed genes in kidney was much higher than in liver (541 versus 11 at both time points). Several similarities were observed with other in vivo gene expression data. However, great differences were found with previous in vitro gene expression data, with the exception of DNA damage response which was not observed at mRNA level in any of our study conditions. Down-regulation was the predominant effect. Oxidative stress response pathway and genes involved in metabolism and transport were inhibited at both time points. RGN (regucalcin) - a gene implicated in calcium homeostasis - was strongly inhibited at both time points and genes implicated in cell survival and proliferation were up-regulated at day 21. Moreover, translation factors and annexin genes were up-regulated at both time points. Apart from oxidative stress, alterations of the calcium homeostasis and cytoskeleton structure may be present at the first events of OTA toxicity. 相似文献
58.
Erik Berninger 《International journal of audiology》2013,52(11):661-669
Transient-evoked otoacoustic emissions (TEOAEs) were recorded from more than 30000 newborns over a six year period. Analysis was performed on all the TEOAEs that passed the bedside universal hearing screen (n=60431), in order to characterize the normal properties of neonatal TEOAEs and to study ear and sex effects. Short recording times (median=33 s) were observed in combination with high entire TEOAE level (median=18.8 dB SPL for an 81.8 dB SPL peak stimulus), and high reproducibility (median=86%). Signal-to-noise ratio (S/N) of the TEOAE was highly frequency-dependent, being poorer at low frequencies. Prolonged averaging increased median reproducibility to 97%, but the minor S/N-improvement at low frequencies did not justify the longer test time. Highly significant mean lateral asymmetries (right >left) and sex differences (female >male) existed in entire TEOAE level, S/N TEOAE, and in half-octave frequency bands (700–4000 Hz). Mean lateral and sex entire TEOAE level differences were 1.1 dB and 1.3 dB, respectively. Stimulus levels were not affected by ear or sex. Hence, physiological differences at the level of organ of Corti were demonstrated in newborns. 相似文献
59.
Infertility is defined as failure to achieve pregnancy within 12 months of unprotected intercourse in women. Trace elements, a kind of micronutrient that is very important to female reproductive function, are affected by intestinal absorption, which is regulated by gut microbiota. Enterotype is the classification of an intestinal microbiome based on its characteristics. Whether or not Prevotella-enterotype and Bacteroides-enterotype are associated with blood trace elements among infertile women remains unclear. The study aimed to explore the relationship between five main whole blood trace elements and these two enterotypes in women with infertility. This retrospective cross-sectional study recruited 651 Chinese women. Whole blood copper, zinc, calcium, magnesium, and iron levels were measured. Quantitative real-time PCR was performed on all fecal samples. Patients were categorized according to whole blood trace elements (low levels group, <5th percentile; normal levels group, 5th‒95th percentile; high levels group, >95th percentile). There were no significant differences in trace elements between the two enterotypes within the control population, while in infertile participants, copper (P = 0.033), zinc (P < 0.001), magnesium (P < 0.001), and iron (P < 0.001) in Prevotella-enterotype was significantly lower than in Bacteroides-enterotype. The Chi-square test showed that only the iron group had a significant difference in the two enterotypes (P = 0.001). Among infertile patients, Prevotella-enterotype (Log(P/B) > −0.27) predicted the low levels of whole blood iron in the obesity population (AUC = 0.894; P = 0.042). For the high levels of iron, Bacteroides-enterotype (Log(P/B) <−2.76) had a predictive power in the lean/normal group (AUC = 0.648; P = 0.041) and Log(P/B) <−3.99 in the overweight group (AUC = 0.863; P = 0.013). We can infer that these two enterotypes may have an effect on the iron metabolism in patients with infertility, highlighting the importance of further research into the interaction between enterotypes and trace elements in reproductive function. 相似文献
60.