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
复制标题
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
中科院分区:
文献类型:
--
作者:
M. Klemm;E. Nagel;D. Schweitzer;S. Schramm;J. Haueisen
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.
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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
影响因子:
4.4
作者:
Dysli, Chantal;Wolf, Sebastian;Zinkernagel, Martin S.
通讯作者:
Zinkernagel, Martin S.
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
影响因子:
1.9
作者:
D. Schweitzer;M. Klemm;M. Hammer;S. Jentsch;F. Schweitzer
通讯作者:
F. Schweitzer
影响因子:
3.5
作者:
Schweitzer, Dietrich;Deutsch, Lydia;Dawczynski, Jens
通讯作者:
Dawczynski, Jens