Evidence map›Paper›PMID 35594041›Full record

ArticleTranslational vision science & technology2022

Sex and Age-Related Differences in Complement Factors Among Patients With Intermediate Age-Related Macular Degeneration.

A Itzam Marin, Felix Poppelaars, Brandie D Wagner, Alan G Palestine, Jennifer L Patnaik, V Michael Holers, Ashley A Frazer-Abel, Marc T Mathias, Niranjan Manoharan, Cheryl N Fonteh and 3 more

Open access · goldAbstract read
In one paragraph

Article in Translational vision science & technology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
6.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
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  4. Sex and the Developmental Environment Shape Molecular Networks Underlying Bronchial Responsiveness in Mice.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 1 country.

A Itzam MarinDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Felix PoppelaarsDivision of Nephrology and Hypertension, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Brandie D WagnerDepartment of Biostatistics and Informatics, University of Colorado School of Public Health, Aurora, Colorado, USA.
Alan G PalestineDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Jennifer L PatnaikDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
V Michael HolersDepartments of Medicine and Immunology, University of Colorado School of Medicine, Aurora, Colorado, USA.
Ashley A Frazer-AbelExsera BioLabs, University of Colorado School of Medicine, Aurora, Colorado, USA.
Marc T MathiasDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Niranjan ManoharanDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Cheryl N FontehDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Naresh MandavaDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
Anne M LynchDepartment of Ophthalmology, University of Colorado Denver School of Medicine, Aurora, Colorado, USA.
University of Colorado Retina Research Group
University of Colorado Denver · USColorado School of Public Health · US

Funding

NIH Prior Approval Process ProfessionalUL1TR002535 · NCATS · UNIVERSITY OF COLORADO DENVER · PI SOKOL, RONALD J. · 2018 to 2022
$51.1M
Biomarkers of Systemic Inflammation in Intermediate Age-Related Macular DegenerationR01EY032456 · NEI · UNIVERSITY OF COLORADO DENVER · PI LYNCH, ANNE M. · 2021 to 2024
$1.6M
NCATS NIH HHS UL1 TR002535NEI NIH HHS R01 EY032456
6 · The paper itself

Abstract

Purpose: Age-related macular degeneration (AMD) is an acquired degenerative disease of the retina classified into early, intermediate, and advanced AMD. A key factor in the pathogenesis of AMD is the complement system. The interaction of age and sex with the complement system may affect the risk of developing AMD. The purpose of this study was to determine if there were sex-specific differences in levels of complement factors among patients with the intermediate phenotype of AMD (iAMD) and explore the correlation between age and complement proteins. Methods: We studied complement factors in patients with iAMD and controls without AMD. Nonparametric, rank-based linear regressions including a sex by AMD interaction were used to compare levels for each analyte. Correlations between age and complement proteins were evaluated using the Spearman rank correlation coefficient. Results: We found significantly higher levels of factor B and factor I in females compared with males with iAMD, whereas no differences were seen in complement levels in male and female controls. The ratios of Ba/factor B, C3a/C3, C4b/C4, and C5a/C5 were not different in males and females with iAMD. Conclusions: We demonstrate disparities in a subset of systemic complement factors between females and males with iAMD, but apparent complement turnover as measured by ratios of activation fragments to intact molecules was not different between these groups. The results suggest that complement system levels, including complement regulator factor I, exhibits sex-related differences in patients with iAMD and highlights that stratification by sex might be helpful in the interpretation of clinical trials of anticomplement therapy.

Indexed as

Complement Factor BMacular DegenerationComplement Factor IFemaleFibrinogenHumansImmunologic FactorsMalePhenotypeComplement Factor BComplement Factor IFibrinogenImmunologic Factors

Identifiers

PMID35594041
PMCPMC9145081
OpenAlexW4281250033

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.