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  • 1
    In: Journal of Ophthalmology, Hindawi Limited, Vol. 2019 ( 2019-01-10), p. 1-11
    Abstract: Purpose . To observe ocular surface changes in Type II diabetic patients with different disease durations and to understand the correlations between clinical parameters and diabetic durations. Methods . In this cross-sectional, prospective study, 51 healthy controls and 91 patients with Type II diabetes were enrolled. The diabetics were divided into 3 subgroups according to the disease duration, including duration 〈 10 y group, 10 to 20 y group, and ≥21 y group. All subjects underwent clinical ocular examinations, including lipid layer thickness (LLT), blinking rate, tear meniscus height (TMH), noninvasive tear film break-up time (NI-BUT), meibography, superficial punctate keratopathy (SPK) scoring, corneal sensitivity, and Schirmer I test. They were also evaluated using the standard patient evaluation of eye dryness (SPEED) questionnaire. Results . SPEED score, meiboscore, SPK score, LLT, Schirmer I test, and corneal sensitivity differed significantly between the diabetic and healthy control groups. Further, SPEED score, Schirmer I test, corneal sensitivity, meiboscore, and blink rate significantly differed among the 3 diabetic subgroups and the control group. In diabetics, the SPEED score correlated with the SPK score, blink rate, TMH, and LLT; NI-BUT with TMH, LLT, and blink rate; TMH with the SPK score; Schirmer I test with the SPK score; and corneal sensitivity with the meiboscore. More importantly, the Schirmer I test, corneal sensitivity, and SPEED score negatively correlated with diabetic duration. Conclusion . Diabetic duration is an important factor that affects functions of the lacrimal functional unit in patients with Type II diabetes. The trends of changes in the ocular parameters vary along the course of diabetes.
    Type of Medium: Online Resource
    ISSN: 2090-004X , 2090-0058
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2019
    detail.hit.zdb_id: 2546525-9
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  • 2
    In: Molecular Biotechnology, Springer Science and Business Media LLC
    Type of Medium: Online Resource
    ISSN: 1073-6085 , 1559-0305
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2073594-7
    SSG: 12
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  • 3
    In: Science of Advanced Materials, American Scientific Publishers, Vol. 14, No. 3 ( 2022-03-01), p. 545-551
    Abstract: Retinoblastoma (RB) is the most common intraocular malignant tumor in children. Therefore, there is an urgent need to explore the molecular mechanism of RB progression. This research explores the anti-tumor effects and specific mechanisms of zoledronic acid nanoliposomes (ZA) in retinoblastoma. Different concentrations of ZA (5, 10, 20 μ mol/L) interfered with WERI-RB-1 and Y79 retinoblastoma cell lines, with flow cytometry being used to detect cell apoptosis and CCK-8 to detect cell proliferation. Transwell detects changes in cell migration and invasion. RT-PCR detects the changes in the expression of apoptosis-related proteins. RT-PCR detection and Western bolt detection of NF- κ B changes. The higher the ZA concentration compared to the control group, in a concentration-dependent relationship, the weaker the cell proliferation and the stronger the apoptosis. In a concentration-dependent relationship, transwell showed that the higher the ZA concentration, the weaker the cell invasion and migration than the control (all P 〈 0.05). After ZA intervention, Bax and Caspase-3 expressions were accelerated, Bcl-2 was abated. NF- κ B was downregulated after ZA intervention. The test results showed that NF- κ B was significantly increased in tissue specimens. ZA has a significant inhibitory effect on tumor malignant biological behavior in retinoblastoma, promotes the apoptosis of retinoblastoma cells, and inhibits their proliferation, migration, and invasion. The specific mechanism may be achieved by inhibiting NF- κ B expression.
    Type of Medium: Online Resource
    ISSN: 1947-2935
    Language: English
    Publisher: American Scientific Publishers
    Publication Date: 2022
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Journal of International Medical Research Vol. 48, No. 4 ( 2020-04), p. 030006052090257-
    In: Journal of International Medical Research, SAGE Publications, Vol. 48, No. 4 ( 2020-04), p. 030006052090257-
    Type of Medium: Online Resource
    ISSN: 0300-0605 , 1473-2300
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2082422-1
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  • 5
    In: Cellular Physiology and Biochemistry, S. Karger AG, Vol. 45, No. 2 ( 2018), p. 505-522
    Abstract: Background/Aims: Blood-retinal barrier (BRB) breakdown and vascular leakage is the leading cause of blindness of diabetic retinopathy (DR). Hyperglycemia-induced oxidative stress and inflammation are primary pathogenic factors of this severe DR complication. An effective interventional modality against the pathogenic factors during early DR is needed to curb BRB breakdown and vascular leakage. This study sought to examine the protective effects of α-Melanocyte-stimulating hormone (α-MSH) on early diabetic retina against vascular hyperpermeability, electrophysiological dysfunction, and morphological deterioration in a rat model of diabetes and probe the mechanisms underlying the α-MSH’s anti-hyperpermeability in both rodent retinas and simian retinal vascular endothelial cells (RF6A). Methods: Sprague Dawley rats were injected through tail vein with streptozotocin to induce diabetes. The rats were intravitreally injected with α-MSH or saline at Week 1 and 3 after hyperglycemia. In another 2 weeks, Evans blue assay, transmission electron microscopy, electroretinogram (ERG), and hematoxylin and eosin (H & E) staining were performed to examine the protective effects of α-MSH in diabetic retinas. The expression of pro-inflammatory factors and tight junction at mRNA and protein levels in retinas was analyzed. Finally, the α-MSH’s anti-hyperpermeability was confirmed in a high glucose (HG)-treated RF6A cell monolayer transwell culture by transendothelial electrical resistance (TEER) measurement and a fluorescein isothiocyanate-Dextran assay. Universal or specific melanocortin receptor (MCR) blockers were also employed to elucidate the MCR subtype mediating α-MSH’s protection. Results: Evans blue assay showed that BRB breakdown and vascular leakage was detected, and rescued by α-MSH both qualitatively and quantitatively in early diabetic retinas; electron microscopy revealed substantially improved retinal and choroidal vessel ultrastructures in α-MSH-treated diabetic retinas; scotopic ERG suggested partial rescue of functional defects by α-MSH in diabetic retinas; and H & E staining revealed significantly increased thickness of all layers in α-MSH-treated diabetic retinas. Mechanistically, α-MSH corrected aberrant transcript and protein expression of pro-inflammatory factor and tight junction genes in the diseased retinas; moreover, it prevented abnormal changes in TEER and permeability in HG-stimulated RF6A cells, and this anti-hyperpermeability was abolished by a universal MCR blocker or an antagonist specific to MC4R. Conclusions: This study showed previously undescribed protective effects of α-MSH on inhibiting BRB breakdown and vascular leakage, improving electrophysiological functions and morphology in early diabetic retinas, which may be due to its down-regulating pro-inflammatory factors and augmenting tight junctions. α-MSH acts predominantly on MC4R to antagonize hyperpermeability in retinal microvessel endothelial cells.
    Type of Medium: Online Resource
    ISSN: 1015-8987 , 1421-9778
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2018
    detail.hit.zdb_id: 1482056-0
    SSG: 12
    SSG: 15,3
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  • 6
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 1990
    In:  Journal of Computer Science and Technology Vol. 5, No. 4 ( 1990-10), p. 363-373
    In: Journal of Computer Science and Technology, Springer Science and Business Media LLC, Vol. 5, No. 4 ( 1990-10), p. 363-373
    Type of Medium: Online Resource
    ISSN: 1000-9000 , 1860-4749
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 1990
    detail.hit.zdb_id: 56696-2
    detail.hit.zdb_id: 2224868-7
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