ArticleInternational journal of molecular sciences2018
Glucosamine-Induced Autophagy through AMPK⁻mTOR Pathway Attenuates Lipofuscin-Like Autofluorescence in Human Retinal Pigment Epithelial Cells In Vitro.
Article in International journal of molecular sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
19 citing papers in PubMed, 30 citations in OpenAlex.
- Glucosamine Promotes Autophagy and Attenuates Hepatic Steatosis Via O-GlcNAcylation-Mediated Mechanisms.Journal of biochemical and molecular toxicology · 2026Article
- Advances in RPGR gene therapy for X‑linked retinitis pigmentosa: From preclinical insights to clinical application (Review).International journal of molecular medicine · 2026Review
- Role and regulation of kinases in age-related macular degeneration.Journal of translational medicine · 2026Review
- Regulated cell death in age-related macular degeneration: Regulatory mechanisms and therapeutic potential.Journal of pharmaceutical analysis · 2025Review
- (Photo)toxicity of Partially Oxidized Docosahexaenoate and Its Effect on the Formation of Lipofuscin in Cultured Human Retinal Pigment Epithelial Cells.Antioxidants (Basel, Switzerland) · 2024Article
- Updates on Emerging Interventions for Autosomal RecessiveJournal of clinical medicine · 2023Review
- Article
- The Role of Retinal Pigment Epithelial Cells in Age-Related Macular Degeneration: Phagocytosis and Autophagy.Biomolecules · 2023Review
- Role of Oxidative Stress in Ocular Diseases: A Balancing Act.Metabolites · 2023Review
- Autophagy in the retinal pigment epithelium: a new vision and future challenges.The FEBS journal · 2022Review
- mTOR Signalling Pathway: A Potential Therapeutic Target for Ocular Neurodegenerative Diseases.Antioxidants (Basel, Switzerland) · 2022Review
- Ming-Mu-Di-Huang-Pill Activates SQSTM1 via AMPK-Mediated Autophagic KEAP1 Degradation and Protects RPE Cells from Oxidative Damage.Oxidative medicine and cellular longevity · 2022Article
- Autophagy and senescence of rat retinal precursor cells under high glucose.Frontiers in endocrinology · 2022Article
- Identification and Validation of Autophagy-Related Genes in Diabetic Retinopathy.Frontiers in endocrinology · 2022Article
- The impact of glucosamine on age-related macular degeneration in patients: A nationwide, population-based cohort study.PloS one · 2021Article
- Different Effects of Metformin and A769662 on Sodium Iodate-Induced Cytotoxicity in Retinal Pigment Epithelial Cells: Distinct Actions on Mitochondrial Fission and Respiration.Antioxidants (Basel, Switzerland) · 2020Article
- Autophagy in Age-Related Macular Degeneration: A Regulatory Mechanism of Oxidative Stress.Oxidative medicine and cellular longevity · 2020Review
- mTORC1 and mTORC2 are differentially engaged in the development of laser-induced CNV.Cell communication and signaling : CCS · 2019Article
- Autophagy Dysfunction, Cellular Senescence, and Abnormal Immune-Inflammatory Responses in AMD: From Mechanisms to Therapeutic Potential.Oxidative medicine and cellular longevity · 2019Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Age-related macular degeneration (AMD) is a vision-threatening age-associated disease. The retinal pigment epithelial (RPE) cells phagocytose and digest photoreceptor outer segment (POS). Incomplete digestion of POS leads to lipofuscin accumulation, which contributes to the pathology of the AMD. Autophagy could help reduce the amount of lipofuscin accumulation. In the present study, we evaluated the effects of glucosamine (GlcN), a natural supplement, on the induction of autophagy and POS-derived lipofuscin-like autofluorescence (LLAF) in ARPE-19 cells in vitro, and investigated the potential molecular pathway involved. Our results revealed that GlcN had no effect on phagocytosis of POS at the lower doses. GlcN treatment induced autophagy in cells. GlcN decreased the LLAF in native POS-treated cells, whereas malondialdehyde or 4-hydroxynonenal-modified POS attenuated this effect. 3-Methyladenine inhibited GlcN-induced autophagy and attenuated the effect of GlcN on the decrease of the native POS-derived LLAF. Furthermore, GlcN induced the phosphorylation of AMP-activated protein kinase (AMPK) and inhibited the phosphorylation of mammalian target of rapamycin (mTOR), whereas Compound C inhibited these effects of GlcN. Altogether, these results suggest that GlcN decreased the native POS-derived LLAF through induction of autophagy, at least in part, by the AMPK⁻mTOR pathway. This mechanism has potential for the preventive treatment of lipofuscin-related retinal degeneration such as AMD.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.