Effects of short term changes in the blood glucose level on the autofluorescence lifetime of the human retina in healthy volunteers

Effects of short term changes in the blood glucose level on the autofluorescence lifetime of the human retina in healthy volunteers
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血糖水平短期变化对健康志愿者视网膜自发荧光寿命的影响

DOI:
10.1117/12.2208605
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
J. Haueisen
J. Haueisen
中科院分区:
--
文献类型:
--
作者:
M. Klemm;E. Nagel;D. Schweitzer;S. Schramm;J. Haueisen

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目的荧光寿命成像检眼镜 (FLIO) 提供眼底的体内代谢图谱。 FLIO 的变化已被发现于例如糖尿病患者。血糖水平变化引起的短期代谢变化的影响尚不清楚。这项工作的目的是检测口服葡萄糖耐量测试期间眼底自发荧光寿命的短期变化。方法使用扫描激光检眼镜(30°眼底,34μm分辨率,用473nm二极管激光器激发,70 ps脉冲,80 MHz重复率,在10名健康志愿者(29±4岁,禁食12小时)中进行FLIO,在两个光谱通道500-560nm中进行检测(ch1) 和 560-720nm (ch2) 使用时间相关单光子计数方法)。血糖水平 (BGL) 通过 Accu-Chek® Aviva 自我监测装置测量。在饮用葡萄糖饮料(300ml 溶液,含有 75g 葡萄糖(Accu-Chek® Dextrose O.G.T.)之前和之后,每 15 分钟测量一次 BGL 和 FLIO。使用 FLIMX 软件包使用改进的 3 指数方法计算 ETDRS 网格内环上的平均荧光寿命 τ。结果结果以 ch1 中所有志愿者的平均值±标准差形式给出。基线测量:BGL: 5.3±0.4 mmol/l,τ1:49±6ps。15 分钟后(BGL:8.4±1.1 mmol/l,τ1:44±5ps)和 90 分钟后(BGL:6.3±1.4 mmol/l,τ1:41±5ps)检测到 τ1 显着降低(α=5%;Wilcoxon 秩和检验)。随着时间的推移,ch2 的荧光寿命减少幅度较小。
PurposeFluorescence lifetime imaging ophthalmoscopy (FLIO) provides in vivo metabolic mapping of the ocular fundus. Changes in FLIO have been found in e.g. diabetes patients. The influence of short term metabolic changes caused by blood glucose level changes on is unknown. Aim of this work is the detection of short-term changes in fundus autofluorescence lifetime during an oral glucose tolerance test.MethodsFLIO was performed in 10 healthy volunteers (29±4 years, fasting for 12h) using a scanning laser ophthalmoscope (30° fundus, 34μm resolution, excitation with 473nm diode laser with 70 ps pulses at 80 MHz repetition rate, detection in two spectral channels 500-560nm (ch1) and 560-720nm (ch2) using the timecorrelated single photon counting method). The blood glucose level (BGL) was measured by an Accu-Chek® Aviva self-monitoring device. Before and after a glucose drink (300ml solution, containing 75g of glucose (Accu-Chek® Dextrose O.G.T.), BGL and FLIO were measured every 15min. The FLIMX software package was applied to compute the average fluorescence lifetime τ on the inner ring of the ETDRS grid using a modified 3-exponential approach.ResultsThe results are given as mean ± standard deviation over all volunteers in ch1. Baseline measurement: BGL: 5.3±0.4 mmol/l, τ1: 49±6ps. A significant reduction (α=5%; Wilcoxon rank-sum test) in τ1is detected after 15min (BGL: 8.4±1.1 mmol/l, τ1: 44±5ps) and after 90min (BGL: 6.3±1.4 mmol/l, τ1: 41±5ps). Results of ch2 show smaller reductions in the fluorescence lifetimes over time.
DOI: 10.1371/journal.pone.0131640
发表时间: 2015
期刊: PloS one
影响因子: 3.7
作者:
Klemm M;Schweitzer D;Peters S;Sauer L;Hammer M;Haueisen J
通讯作者: Haueisen J
DOI: 10.1167/iovs.14-16203
发表时间: 2015-05-01
影响因子: 4.4
作者:
Dysli, Chantal;Wolf, Sebastian;Zinkernagel, Martin S.
通讯作者: Zinkernagel, Martin S.
荧光寿命成像检眼镜检查青光眼
DOI: --
发表时间: 2014
期刊: Graefe's Archive for Clinical and Experimental Ophthalmology
影响因子: --
作者:
L. Ramm;S. Jentsch;R. Augsten;M. Hammer
通讯作者: M. Hammer
DOI: 10.1117/12.831566
发表时间: 2009
期刊: Applied Optics
影响因子: 1.9
作者:
D. Schweitzer;M. Klemm;M. Hammer;S. Jentsch;F. Schweitzer
通讯作者: F. Schweitzer
DOI: 10.1117/1.jbo.20.6.061106
发表时间: 2015-06-01
影响因子: 3.5
作者:
Schweitzer, Dietrich;Deutsch, Lydia;Dawczynski, Jens
通讯作者: Dawczynski, Jens