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Int. J. Mol. Sci. 2017, 18(1), 207;

Metabolic Response of Human Osteoarthritic Cartilage to Biochemically Characterized Collagen Hydrolysates

Laboratory for Experimental Orthopaedics, Department of Orthopaedics, Justus Liebig University Giessen, Paul-Meimberg-Str. 3, 35392 Giessen, Germany
Protein Analytics, Department of Biochemistry, Faculty of Medicine, Justus Liebig University Giessen, Friedrichstr. 24, 35392 Giessen, Germany
Agaplesion Evangelical Hospital Mittelhessen, Paul-Zipp-Str. 171, 35398 Giessen, Germany
Institute of Experimental Physics, Department of Biophysics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
RI-B-NT Research Institute of Bioinformatics and Nanotechnology, Franziusallee 177, 24148 Kiel, Germany
Author to whom correspondence should be addressed.
Academic Editors: Charles J. Malemud and Ali Mobasheri
Received: 1 November 2016 / Revised: 11 January 2017 / Accepted: 13 January 2017 / Published: 20 January 2017
(This article belongs to the Special Issue Apoptotic Chondrocytes and Osteoarthritis)
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The most frequent disease of the locomotor system is osteoarthritis (OA), which, as a chronic joint disease, might benefit more from nutrition than acute illnesses. Collagen hydrolysates (CHs) are peptidic mixtures that are often used as nutraceuticals for OA. Three CHs were characterized biochemically and pharmacologically. Our biophysical (MALDI-TOF-MS, NMR, AFM) and fluorescence assays revealed marked differences between CHs of fish (Peptan® F 5000, Peptan® F 2000) and porcine (Mobiforte®) origin with respect to the total number of peptides and common peptides between them. Using a novel dual radiolabeling procedure, no CH modulated collagen biosynthesis in human knee cartilage explants. Peptan® F 2000 enhanced the activities of the aggrecanase ADMATS4 and ADMATS5 in vitro without loss of proteoglycan from cartilage explants; the opposite effect was observed with Mobiforte®. Interleukin (IL)-6, matrix metalloproteinase (MMP)-1, -3 and -13 levels were elevated in explants that were treated with Mobiforte® and Peptan® F 5000, but not with Peptan® F 2000. In conclusion, the heterogeneous peptide composition and disparate pharmacological effects between CHs suggest that the effect of a CH preparation cannot be extrapolated to other formulations. Thus, the declaration of a CH as a safe and effective nutraceutical requires a thorough examination of its pleiotropic effects. View Full-Text
Keywords: collagen hydrolysate; osteoarthritis; cartilage; ADAMTS; MMP; TIMP; IL6, MALDI-TOF; Peptan® F; Mobiforte® collagen hydrolysate; osteoarthritis; cartilage; ADAMTS; MMP; TIMP; IL6, MALDI-TOF; Peptan® F; Mobiforte®

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Schadow, S.; Simons, V.S.; Lochnit, G.; Kordelle, J.; Gazova, Z.; Siebert, H.-C.; Steinmeyer, J. Metabolic Response of Human Osteoarthritic Cartilage to Biochemically Characterized Collagen Hydrolysates. Int. J. Mol. Sci. 2017, 18, 207.

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