Objectives: This study investigated the contribution of vascular endothelial growth factor (VEGF) and stromal cell-derived factor-1α (SDF-1α) angiogenic mediators in eyes with age-related macular degeneration (AMD).
Methods: Aqueous humor specimens taken during cataract surgery in 7 cases of intermediate stage (nonexudative) AMD and 7 cases of late stage (exudative) AMD were evaluated using chemiluminescent immunoassay testing in this prospective case-control study. Mediator levels were compared with the normal reference values of 7 patients without any disease other than cataract.
Results: The groups were similar in terms of age and gender (p>0.05). The aqueous humor levels of VEGF in both the intermediate AMD (median: 224.3 pg/mL, range: 44.8-380.4 pg/mL) and late-stage AMD (median: 108.7 pg/mL, range: 61.9-223.5 pg/mL) patients were similar to those of the control group (median: 121.1 pg/mL, range: 24.9-156.6 pg/mL) (p=0.256). Moreover, there was no significant difference in the SDF-1α concentrations between the intermediate AMD (median: 160.9 pg/mL, range 130-166.3 pg/mL), late AMD (median: 161 pg/mL, range: 154.1.9-171.6 pg/mL), and control group values (median: 161 pg/mL, range: 155.2-219 pg/mL) (p=0.763).
Conclusion: The aqueous humor levels of VEGF and SDF-1α were within the normal range in patients with intermediate and late-stage AMD.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8759545 | PMC |
| http://dx.doi.org/10.14744/bej.2021.49140 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Glucagon, rather than Glucagon-Like Peptide 1, Mediates Higher Post-Lunch Glucose Excursions during Breakfast Skipping in Asian Indian Patients with Uncontrolled Type 2 Diabetes Mellitus.
Indian J Endocrinol Metab
December 2024
Department of Endocrinology, Bai Yamunabai Laxman Nair Charitable Hospital and Topiwala National Medical College, Mumbai, Maharashtra, India.
Introduction: The effect and mechanism of skipping breakfast on glycemic control in type 2 diabetes mellitus (T2DM) in Asian-Indians is unknown.
Methods: Cross-over, within-group study recruiting 5 habitual breakfast eaters (BE) and 5 habitual breakfast skippers (BS) with uncontrolled T2DM (HbA1c 7-9%). Patients underwent testing after three days of following their usual breakfast habits and after seven days of crossing over to the other arm.
Tyramine-enzyme conjugate repeats for an interdigitated capacitance immunosensing array in the detection of neuroblastoma biomarker neuron-specific enolase.
Analyst
January 2025
Department of Pediatric Surgery, The First Affiliated Hospital of Fujian Medical University, 20 Cha-Zhong Road, Taijiang District, Fuzhou 350005, China.
Methods based on enzyme labelling strategies have been widely developed for capacitance immunoassays, but most suffer from low sensitivity and are unfavorable for routine use in the early stages of diagnostics. Herein, we designed a highly efficient capacitance immunosensing method for the low-abundance neuroblastoma biomarker neuron-specific enolase (NSE) using an interdigitated micro-comb electrode. Initially, monoclonal mouse anti-human NSE capture antibodies were immobilized on the interdigitated gold electrodes using bovine serum albumin.
View Article and Find Full Text PDFFacile preparation of iridium-based AIE polymer dots for sensitive electrochemiluminescence immunoassay of CD44 protein.
Anal Chim Acta
March 2025
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China; Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Republic of Korea. Electronic address:
The development of aggregation-induced emission (AIE) luminophores is a fascinating and promising topic in electrochemiluminescence (ECL) bioanalysis. Herein, the AIE-active but water-insoluble [Ir(bt)₂(acac)] (bt = 2-phenylbenzothiazole, acac = acetylacetonate) was encapsulated within poly(styrene-maleic anhydride) (PSMA) using a simple nanoprecipitation method. This encapsulation strategy could effectively limit the free motion of Ir(bt)₂(acac) and trigger the aggregation-induced electrochemiluminescence (AIECL) effect.
View Article and Find Full Text PDFA machine-learning-integrated portable electrochemiluminescence sensing platform for the visualization and high-throughput immunoassays.
Talanta
January 2025
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR China. Electronic address:
Electrochemiluminescence (ECL)-based point-of-care testing (POCT) has the potential to facilitate the rapid identification of diseases, offering advantages such as high sensitivity, strong selectivity, and minimal background interference. However, as the throughput of these devices increases, the issues of increased energy consumption and cross-contamination of samples remain. In this study, a high-throughput ECL biosensor platform with the assistance of machine learning algorithms is developed by combining a microcolumn array electrode, a microelectrochemical workstation, and a smartphone with custom software.
View Article and Find Full Text PDFCirculating endothelial progenitor cells and inflammatory markers in type 1 diabetes after an acute session of aerobic exercise.
Arch Endocrinol Metab
January 2025
Instituto Nacional de Ciência e Tecnologia para Avaliação de Tecnologias em Saúde Hospital de Clínicas de Porto Alegre Porto AlegreRS Brasil Instituto Nacional de Ciência e Tecnologia para Avaliação de Tecnologias em Saúde (IATS) - CNPq/Brasil, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil.
Objective: To determine circulating endothelial progenitor cells (EPC) counts and levels of inflammatory markers in individuals with and without type 1 diabetes mellitus (T1DM) in response to an intense aerobic exercise session.
Subjects And Methods: In total, 15 adult men with T1DM and 15 healthy individuals underwent a 30-minute aerobic exercise session on a cycle ergometer at 60% of the peak heart rate. The EPC count (CD45/CD34/KDR), tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6) levels were measured before and 60 minutes after the session.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!