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Biomolecules
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Molecular Mechanisms of Retinal Degenerative Conditions
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Molecular Mechanisms of Retinal Degenerative Conditions

A special issue of Biomolecules (ISSN 2218-273X). This special issue belongs to the section "Molecular Medicine".

Deadline for manuscript submissions: closed (30 March 2024) | Viewed by 2525

Special Issue Editor

Prof. Dr. Maureen A. McCall

E-Mail Website
Guest Editor
Department of Ophthalmology and Visual Sciences, University of Louisville, Louisville, KY 40202, USA
Interests: neurodegeneration; retina; genome editing

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit reviews or manuscripts describing primary data for a Special Issue of Biomolecules, with the aim of providing an overview of the current state of research into the molecular mechanisms of retinal degeneration. In this Special Issue, original research articles and reviews are welcome concerning research areas including, but not limited to, the molecular and genetic causes of retinal degeneration, which can involve neurons in the neural retina or in the RPE. Molecular mechanisms in genetically, chemically or light-induced models or in vitro models leading to degeneration are applicable, taking into consideration both animal and patient data.

We look forward to receiving your contributions.

Prof. Dr. Maureen A. McCall
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Biomolecules is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • retinal degeneration
  • retinal pigment epithelium degeneration
  • cell death pathways
  • retinal disease

Published Papers (2 papers)

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Research

20 pages, 1304 KiB  
Article
Towards Uncovering the Role of Incomplete Penetrance in Maculopathies through Sequencing of 105 Disease-Associated Genes
by Rebekkah J. Hitti-Malin, Daan M. Panneman, Zelia Corradi, Erica G. M. Boonen, Galuh Astuti, Claire-Marie Dhaenens, Heidi Stöhr, Bernhard H. F. Weber, Dror Sharon, Eyal Banin, Marianthi Karali, Sandro Banfi, Tamar Ben-Yosef, Damjan Glavač, G. Jane Farrar, Carmen Ayuso, Petra Liskova, Lubica Dudakova, Marie Vajter, Monika Ołdak, Jacek P. Szaflik, Anna Matynia, Michael B. Gorin, Kati Kämpjärvi, Miriam Bauwens, Elfride De Baere, Carel B. Hoyng, Catherina H. Z. Li, Caroline C. W. Klaver, Chris F. Inglehearn, Kaoru Fujinami, Carlo Rivolta, Rando Allikmets, Jana Zernant, Winston Lee, Osvaldo L. Podhajcer, Ana Fakin, Jana Sajovic, Alaa AlTalbishi, Sandra Valeina, Gita Taurina, Andrea L. Vincent, Lisa Roberts, Raj Ramesar, Giovanna Sartor, Elena Luppi, Susan M. Downes, L. Ingeborgh van den Born, Terri L. McLaren, John N. De Roach, Tina M. Lamey, Jennifer A. Thompson, Fred K. Chen, Anna M. Tracewska, Smaragda Kamakari, Juliana Maria Ferraz Sallum, Hanno J. Bolz, Hülya Kayserili, Susanne Roosing and Frans P. M. Cremersadd Show full author list remove Hide full author list
Biomolecules 2024, 14(3), 367; https://doi.org/10.3390/biom14030367 - 19 Mar 2024
Viewed by 1208
Abstract
Inherited macular dystrophies (iMDs) are a group of genetic disorders, which affect the central region of the retina. To investigate the genetic basis of iMDs, we used single-molecule Molecular Inversion Probes to sequence 105 maculopathy-associated genes in 1352 patients diagnosed with iMDs. Within [...] Read more.
Inherited macular dystrophies (iMDs) are a group of genetic disorders, which affect the central region of the retina. To investigate the genetic basis of iMDs, we used single-molecule Molecular Inversion Probes to sequence 105 maculopathy-associated genes in 1352 patients diagnosed with iMDs. Within this cohort, 39.8% of patients were considered genetically explained by 460 different variants in 49 distinct genes of which 73 were novel variants, with some affecting splicing. The top five most frequent causative genes were ABCA4 (37.2%), PRPH2 (6.7%), CDHR1 (6.1%), PROM1 (4.3%) and RP1L1 (3.1%). Interestingly, variants with incomplete penetrance were revealed in almost one-third of patients considered solved (28.1%), and therefore, a proportion of patients may not be explained solely by the variants reported. This includes eight previously reported variants with incomplete penetrance in addition to CDHR1:c.783G>A and CNGB3:c.1208G>A. Notably, segregation analysis was not routinely performed for variant phasing—a limitation, which may also impact the overall diagnostic yield. The relatively high proportion of probands without any putative causal variant (60.2%) highlights the need to explore variants with incomplete penetrance, the potential modifiers of disease and the genetic overlap between iMDs and age-related macular degeneration. Our results provide valuable insights into the genetic landscape of iMDs and warrant future exploration to determine the involvement of other maculopathy genes. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Retinal Degenerative Conditions)
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11 pages, 6469 KiB  
Article
Exploring the Potential Link between Acute Central Serous Chorioretinopathy and Trimethylamine N-Oxide, Phoenixin, Spexin, and Alarin Molecules
by Mehmet Kaan Kaya and Sermal Arslan
Biomolecules 2023, 13(10), 1459; https://doi.org/10.3390/biom13101459 - 27 Sep 2023
Viewed by 903
Abstract
Purpose: Acute central serous chorioretinopathy (ACSCR) is a condition characterized by decreased visual acuity, macular thickening, and edema under the retinal layer. Although the underlying mechanisms of the disease are not fully understood, oxidative stress is considered to be a critical risk factor. [...] Read more.
Purpose: Acute central serous chorioretinopathy (ACSCR) is a condition characterized by decreased visual acuity, macular thickening, and edema under the retinal layer. Although the underlying mechanisms of the disease are not fully understood, oxidative stress is considered to be a critical risk factor. The aim of this study was to shed light on the pathophysiology of ACSCR by investigating the levels of circulating trimethylamine N-oxide (TMAO), phoenixin (PNX), alarin (ALA), and spexin (SPX) molecules in ACSCR patients. Methods: The study included 30 ACSCR patients and 30 healthy individuals as controls. ACSCR was diagnosed using optical coherence tomography (OCT) imaging. Five mL blood samples were collected from all participants following overnight fasting. The levels of TMAO, PNX, ALA, and SPX in the blood samples were measured using the ELISA method. Results: Visual acuity was found to be significantly reduced in ACSCR patients compared to the control group (<0.05), while macular thickness was increased (<0.05). Furthermore, TMAO, PNX, and ALA levels were significantly higher in ACSCR patients (<0.05), while SPX levels were significantly lower compared to the control group (<0.05). In ACSCR patients, there was a positive correlation between macular thickness and TMAO, PNX, and ALA; there was, however, a negative correlation with SPX. Additionally, visual acuity was negatively correlated with TMAO, PNX, and ALA, while SPX levels decreased as visual acuity decreased. Conclusions: These results demonstrate a correlation between the TMAO, PNX, ALA, and SPX levels of ACSCR patients and their visual acuity and macular thickness. Given the role of these molecules in ACSCR’s pathophysiology, they hold promise as potential diagnostic, therapeutic, and follow-up markers in the future. Full article
(This article belongs to the Special Issue Molecular Mechanisms of Retinal Degenerative Conditions)
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