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Development of Inapparent Dengue Associated With Increased Antibody Levels to Aedes aegypti Salivary Proteins: A Longitudinal Dengue Cohort in Cambodia
The Journal of Infectious Diseases ( IF 6.4 ) Pub Date : 2021-10-26 , DOI: 10.1093/infdis/jiab541
Jessica E Manning 1, 2 , Sophana Chea 2, 3 , Daniel M Parker 4 , Jennifer A Bohl 1 , Sreyngim Lay 2, 3 , Allyson Mateja 5 , Somnang Man 2, 3 , Sreynik Nhek 2, 3 , Aiyana Ponce 1 , Sokunthea Sreng 2, 3 , Dara Kong 2, 3 , Soun Kimsan 3, 6 , Claudio Meneses 1 , Michael P Fay 7 , Seila Suon 2, 3 , Rekol Huy 3 , Chanthap Lon 1, 2 , Rithea Leang 3, 6 , Fabiano Oliveira 1
Affiliation  

Background We established the first prospective cohort to understand how infection with dengue virus is influenced by vector-specific determinants such as humoral immunity to Aedes aegypti salivary proteins. Methods Children aged 2–9 years were enrolled in the PAGODAS (Pediatric Assessment Group of Dengue and Aedes Saliva) cohort with informed consent by their guardians. Children were followed semi-annually for antibodies to dengue and to proteins in Ae. aegypti salivary gland homogenate using enzyme-linked immunosorbent assays and dengue-specific neutralization titers. Children presented with fever at any time for dengue testing. Results From 13 July to 30 August 2018, we enrolled 771 children. At baseline, 22% (173/770) had evidence of neutralizing antibodies to 1 or more dengue serotypes. By April 2020, 51 children had symptomatic dengue while 148 dengue-naive children had inapparent dengue defined by neutralization assays. In a multivariate model, individuals with higher antibodies to Ae. aegypti salivary proteins were 1.5 times more likely to have dengue infection (hazard ratio [HR], 1.47 [95% confidence interval {CI}, 1.05–2.06]; P = .02), particularly individuals with inapparent dengue (HR, 1.64 [95% CI, 1.12–2.41]; P = .01). Conclusions High levels of seropositivity to Ae. aegypti salivary proteins are associated with future development of dengue infection, primarily inapparent, in dengue-naive Cambodian children. Clinical Trials Registration NCT03534245.

中文翻译:

与埃及伊蚊唾液蛋白抗体水平升高相关的隐性登革热的发展:柬埔寨的一项纵向登革热队列研究

背景 我们建立了第一个前瞻性队列,以了解登革热病毒感染如何受到载体特异性决定因素的影响,例如对埃及伊蚊唾液蛋白的体液免疫。方法 在监护人知情同意的情况下,将 2-9 岁的儿童纳入 PAGODAS(登革热和唾液伊蚊儿科评估组)队列。每半年跟踪一次儿童的登革热抗体和 Ae 蛋白抗体。使用酶联免疫吸附测定和登革热特异性中和滴度的埃及伊蚊唾液腺匀浆。随时出现发烧的儿童进行登革热检测。结果 2018 年 7 月 13 日至 8 月 30 日,我们招收了 771 名儿童。在基线时,22% (173/770) 有针对一种或多种登革热血清型的中和抗体的证据。到 2020 年 4 月,51 名儿童患有有症状的登革热,而 148 名未接触过登革热的儿童患有由中和试验定义的不明显的登革热。在多变量模型中,个体具有更高的 Ae 抗体。埃及伊蚊唾液蛋白感染登革热的可能性是其 1.5 倍(风险比 [HR],1.47 [95% 置信区间 {CI},1.05–2.06];P = .02),特别是不明显登革热的个体(HR,1.64 [ 95% CI,1.12–2.41];P = .01)。结论 高水平的 Ae 血清阳性。埃及伊蚊唾液蛋白与登革热感染的未来发展有关,主要是不明显的,在未感染过登革热的柬埔寨儿童中。临床试验注册 NCT03534245。感染登革热的可能性增加 5 倍(风险比 [HR],1.47 [95% 置信区间 {CI},1.05–2.06];P = .02),特别是不明显登革热的个体(HR,1.64 [95% CI, 1.12–2.41];P = .01)。结论 高水平的 Ae 血清阳性。埃及伊蚊唾液蛋白与登革热感染的未来发展有关,主要是不明显的,在未感染过登革热的柬埔寨儿童中。临床试验注册 NCT03534245。感染登革热的可能性增加 5 倍(风险比 [HR],1.47 [95% 置信区间 {CI},1.05–2.06];P = .02),特别是不明显登革热的个体(HR,1.64 [95% CI, 1.12–2.41];P = .01)。结论 高水平的 Ae 血清阳性。埃及伊蚊唾液蛋白与登革热感染的未来发展有关,主要是不明显的,在未感染过登革热的柬埔寨儿童中。临床试验注册 NCT03534245。
更新日期:2021-10-26
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