title: Characterization of the human aqueous humour proteome: A comparison of the genders.
abstract: Aqueous humour (AH) is an important biologic fluid that maintains normal intraocular pressure and contains proteins that regulate the homeostasis of ocular tissues. Any alterations in the protein compositions are correlated to the pathogenesis of various ocular disorders. In recent years, gender-based medicine has emerged as an important research focus considering the prevalence of certain diseases, which are higher in a particular sex. Nevertheless, the inter-gender variations in the AH proteome are unknown. Therefore, this study endeavoured to characterize the AH proteome to assess the differences between genders. Thirty AH samples of patients who underwent cataract surgery were categorized according to their gender. Label-free quantitative discovery mass spectrometry-based proteomics strategy was employed to characterize the AH proteome. A total of 147 proteins were identified with a false discovery rate of less than 1% and only the top 10 major AH proteins make up almost 90% of the total identified proteins. A large number of proteins identified were correlated to defence, immune and inflammatory mechanisms, and response to wounding. Four proteins were found to be differentially abundant between the genders, comprising SERPINF1, SERPINA3, SERPING1 and PTGDS. The findings emerging from our study provide the first insight into the gender-based proteome differences in the AH and also highlight the importance in considering potential sex-dependent changes in the proteome of ocular pathologies in future studies employing the AH.
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Natarajan
authors.initials: N
authors.lastname: Perumal
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Caroline
authors.initials: C
authors.lastname: Manicam
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Steinicke
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Funke
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Norbert
authors.initials: N
authors.lastname: Pfeiffer
authors.affiliation: Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Franz H
authors.initials: FH
authors.lastname: Grus
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001082:Aqueous Humor / Q000378:metabolism*; D019295:Computational Biology / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D025941:Protein Interaction Mapping; D060066:Protein Interaction Maps; D020543:Proteome; D040901:Proteomics / Q000379:methods; D015398:Signal Transduction
chemical_list: D020543:Proteome