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Erschienen in: International Ophthalmology 4/2020

01.04.2020 | Original Paper

Hydrogen sulfide serves as a biomarker in the anterior segment of patients with diabetic retinopathy

verfasst von: Yuyi Han, Xiaoqian Zhang, Zhiyin Zhou, Mengxi Yu, Qiuhong Wang, Jin Yao, Yi Han

Erschienen in: International Ophthalmology | Ausgabe 4/2020

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Abstract

Objective

The present study aims to determine hydrogen sulfide (H2S) concentrations of the aqueous humor from patients with diabetic retinopathy (DR) to compare its levels in the anterior segments, also to investigate its effect on the retinal microvascular endothelial cells under high glucose condition.

Methods

AH samples were collected from patients with proliferative diabetic retinopathy (n = 11), non-proliferative diabetic retinopathy (n = 12) and diabetic patients without DR as controls (n = 12). There were 5 patients with PDR received intraocular anti-VEGF injection (Lucentis). Cultured RF/6A cells were grouped into control group, mannitol group, high glucose group and NaHS co-administrated high glucose group. Concentrations of H2S were detected by chemical assay. Cell apoptosis was evaluated by flow cytometry.

Results

A significantly higher H2S level was observed in AH samples of PDR patients among other groups. The H2S level of DR group was higher than that of control group. Decreased H2S levels in the AH of post-injected PDR patients were observed compared with their AH samples before the anti-VEGF injection. In cell culture, low concentration of NaHS can reverse high-glucose-induced apoptosis of RF/6A cells.

Conclusion

Our study revealed increased H2S levels in the anterior segments of different DR patients. The anti-VEGF injection reduced the H2S level in AH from PDR patients. The study suggested that H2S may serve as a biomarker in the progression of PDR. On the other hand, the H2S donor exerted a protective effect on retinal vascular endothelial cells against high-glucose-induced apoptosis.
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Metadaten
Titel
Hydrogen sulfide serves as a biomarker in the anterior segment of patients with diabetic retinopathy
verfasst von
Yuyi Han
Xiaoqian Zhang
Zhiyin Zhou
Mengxi Yu
Qiuhong Wang
Jin Yao
Yi Han
Publikationsdatum
01.04.2020
Verlag
Springer Netherlands
Erschienen in
International Ophthalmology / Ausgabe 4/2020
Print ISSN: 0165-5701
Elektronische ISSN: 1573-2630
DOI
https://doi.org/10.1007/s10792-019-01252-z

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