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1.
Cheng-Shiun He William D. Fraser Jonathan Tang Kirsty Brown Stephen Renwick Jay Rudland-Thomas 《Journal of sports sciences》2016,34(1):67-74
Heavy training is associated with increased respiratory infection risk and antimicrobial proteins are important in defence against oral and respiratory tract infections. We examined the effect of 14 weeks of vitamin D3 supplementation (5000 IU/day) on the resting plasma cathelicidin concentration and the salivary secretion rates of secretory immunoglobulin A (SIgA), cathelicidin, lactoferrin and lysozyme in athletes during a winter training period. Blood and saliva were obtained at the start of the study from 39 healthy men who were randomly allocated to vitamin D3 supplement or placebo. Blood samples were also collected at the end of the study; saliva samples were collected after 7 and 14 weeks. Plasma total 25(OH)D concentration increased by 130% in the vitamin D3 group and decreased by 43% in the placebo group (both P = 0.001). The percentage change of plasma cathelicidin concentration in the vitamin D3 group was higher than in the placebo group (P = 0.025). Only in the vitamin D3 group, the saliva SIgA and cathelicidin secretion rates increased over time (both P = 0.03). A daily 5000 IU vitamin D3 supplement has a beneficial effect in up-regulating the expression of SIgA and cathelicidin in athletes during a winter training period, which could improve resistance to respiratory infections. 相似文献
2.
目的提高专科医师对舍格伦综合征的认识及早期诊断水平.方法对8例临床资料进行回顾性分析.结果8例患者是以下颌下腺病变为首发症状的SS.结论仔细询问病史并进行自身抗体等相关检查是避免误诊的关键. 相似文献
3.
通过对运动与唾液中的溶菌酶和sIgA相关性的研究,了解运动对唾液中sIgA和溶菌酶的影响及与上呼吸道感染的关系,结果表明:不同的运动项目、运动强度及运动时间对唾液溶今菌酶和sIgA的影响不同且与上呼吸道感染的危险性也有着不同的影响. 相似文献
4.
台阶运动负荷前后唾液睾酮和皮质醇的测定与分析 总被引：3，自引：0，他引：3
通过对10名普通健康男大学生安静状态下及两种运动负荷后唾液睾酮、唾液皮质醇和RPE（主观体力感觉）表等生理指标的测定，发现：运动后，唾液睾酮水平升高，唾液皮质醇无显著变化但有升高趋势。RPE等级升高。结果表明：两次台阶运动负荷后，唾液睾酮、唾液皮质酸及RPE表可作为评定运动疲劳的生理指标。 相似文献
5.
The purpose of this study was to investigate the responses of salivary hormones and salivary secretory immunoglobulin A (SIgA) and anxiety in winners and losers during an international judo competition. Twenty-three trained, male, national-level judo athletes provided three saliva samples during a competition day: morning, in anticipation of competition after an overnight fast, mid-competition, and post-competition within 15 min post-fight for determination of salivary cortisol, salivary testosterone, salivary testosterone/cortisol ratio, SIgA absolute concentrations, SIgA secretion rate and saliva flow rate. The competitive state anxiety inventory questionnaire was completed by the athletes (n = 12) after the first saliva collection for determination of somatic anxiety, cognitive anxiety and self-confidence. Winners were considered 1-3 ranking place (n = 12) and losers (n = 11) below third place in each weight category. Winners presented higher anticipatory salivary cortisol concentrations (p = 0.03) and a lower mid-competition salivary testosterone/cortisol ratio (p = 0.003) compared with losers with no differences for salivary testosterone. Winners tended to have higher SIgA secretion rates (p = 0.07) and higher saliva flow rates (p = 0.009) at mid-competition. Higher levels of cognitive anxiety (p = 0.02) were observed in the winners, without differences according to the outcome in somatic anxiety and self-confidence. The results suggest that winners experienced higher levels of physiological arousal and better psychological preparedness in the morning, and as the competition progressed, the winners were able to control their stress response better. 相似文献
6.
本研究应用免疲组织化学技术(PAP)法,对雄性wistar大鼠颌下腺进行促肾上腺皮质激素(ACTH)和β—内啡肽(β—EP)免疫组织化学定量研究,结果发现,在大鼠颌下腺的颗粒曲管,纹状管和小叶间导管存在不同强度的免疫阳性细胞,该实验结果进一步验证了颌下腺具有神经内分泌功能。 相似文献
7.
一种易于掌握的果蝇唾腺染色体制片方法 总被引：4，自引：0，他引：4
果蝇唾腺染色体制片技术是遗传学实验课中学生感觉困难较大的实验。用现行的实验方法不易得到理想的制片效果。本文总结了多年的工作经验,改进了果蝇唾腺染色体的制片方法,取得了良好效果。 相似文献
8.
目的：探讨影响涎腺粘液表皮样癌患者术后生存的相关病理因素。方法：对98例涎腺粘液表皮样癌患者进行回顾性研究,分析影响患者术后生存的相关临床病理因素。通过SPSS10.0软件分析,筛选出影响粘液表皮样癌患者术后生存的主要临床病理因素。结果：与术后生存率相关的主要临床病理因素包括：临床分期、患者年龄、镜下是否发现坏死。结论：临床分期、患者年龄是影响涎腺粘液表皮样癌术后生存的主要临床因素,镜下坏死是影响涎腺粘液表皮样癌患者术后生存的主要病理因素。 相似文献
9.
余玲 《杨凌职业技术学院学报》2006,5(4):43-43,46
果蝇唾腺染色体制片技术是遗传学实验中学生感觉困难较大的实验。用传统的实验方法不易得到理想的制片效果。本文对果蝇唾腺染色体的制片方法做了一些改进,取得了良好的效果。 相似文献
10.
Miguel Sordi Bortolini Junior Guilherme Gularte De Agostini Ismair Teodoro Reis Romeu Paulo Martins Silva Lamounier Jeffrey B. Blumberg Foued Salmen Espindola 《Research quarterly for exercise and sport》2013,84(3):604-610
Saliva provides a convenient and noninvasive matrix for assessing specific physiological parameters, including some biomarkers of exercise. We investigated whether the total protein concentration of whole saliva (TPWS) would reflect the anaerobic threshold during an incremental exercise test. After a warm-up period, 13 nonsmoking men performed a maximum incremental exercise on a cycle ergometer. Blood and stimulated saliva were collected during the test. The TPWS anaerobic threshold (PAT) was determined using the Dmax method. The PAT was correlated with the blood lactate anaerobic threshold (AT; r = .93, p < .05). No significant difference (p = .16) was observed between PAT and AT. Thus, TPWS provides a convenient and noninvasive matrix for determining the anaerobic threshold during incremental exercise tests. 相似文献