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Yang J, He J, Yang L. Advanced glycation end products impair the repair of injured tendon: a study in rats. BMC Musculoskelet Disord 2024; 25:700. [PMID: 39227794 PMCID: PMC11370031 DOI: 10.1186/s12891-024-07760-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 08/05/2024] [Indexed: 09/05/2024] Open
Abstract
BACKGROUND The AGEs levels in tissues of diabetics and elderly tend to be higher than in normal individuals. This study aims to determine the effects of AGEs on Achilles tendon repair. MATERIALS AND METHODS Thirty-six male eight-week-old Sprague Dawley rats were selected in this study. The rats were randomly divided into two experimental groups and a control group after the transection of the Achilles tendon. During the tendon repair, the experimental groups were injected around the Achilles tendon with 350mmol/L (low dose group) and 1000mmol/L (high dose group) D-ribose 0.2 ml respectively to increase the AGEs level, while in the control group were given the same amount of PBS. The injections were given twice a week for six weeks. Collagen-I, TNF-α, and IL-6 expression in the healed Achilles tendon was assessed. Additionally, macroscopic, pathological, and biomechanical evaluations of Achilles tendon repair were conducted. RESULTS The repaired Achilles tendons in the high dose group showed severe swelling and distinctive adhesions. The histological score went up with the increase of the AGEs in the Achilles tendon (p<0.001). TNF- α and IL-6 in the Achilles tendon increased (p<0.001, p<0.001), and the production of collagen-I decreased with the accumulation of AGEs in the repaired Achilles tendon (p<0.001). The tensile strength of Achilles tendon in the high dose group was impaired significantly. CONCLUSION In current study, the compromised tendon repair model induced by AGEs was successfully established in rat. The study demonstrated that AGEs significantly impair Achilles tendon repair.
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Affiliation(s)
- Juan Yang
- Department of Geriatrics, Shanghai Fourth People's Hospital Affiliated to Tongji University, No.1279 Sanmen Road, Shanghai, 200434, China
| | - Jirui He
- The Second Clinical Medical College, Lanzhou University, No. 82 Cuiyingmen, Chengguan District, Lanzhou City, 730030, Gansu Province, China.
| | - Ling Yang
- Department of Geriatrics, Shanghai Fourth People's Hospital Affiliated to Tongji University, No.1279 Sanmen Road, Shanghai, 200434, China.
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Hellwig M, Diel P, Eisenbrand G, Grune T, Guth S, Henle T, Humpf HU, Joost HG, Marko D, Raupbach J, Roth A, Vieths S, Mally A. Dietary glycation compounds - implications for human health. Crit Rev Toxicol 2024; 54:485-617. [PMID: 39150724 DOI: 10.1080/10408444.2024.2362985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/24/2024] [Accepted: 05/28/2024] [Indexed: 08/17/2024]
Abstract
The term "glycation compounds" comprises a wide range of structurally diverse compounds that are formed endogenously and in food via the Maillard reaction, a chemical reaction between reducing sugars and amino acids. Glycation compounds produced endogenously are considered to contribute to a range of diseases. This has led to the hypothesis that glycation compounds present in food may also cause adverse effects and thus pose a nutritional risk to human health. In this work, the Senate Commission on Food Safety (SKLM) of the German Research Foundation (DFG) summarized data on formation, occurrence, exposure and toxicity of glycation compounds (Part A) and systematically assessed potential associations between dietary intake of defined glycation compounds and disease, including allergy, diabetes, cardiovascular and renal disease, gut/gastrotoxicity, brain/cognitive impairment and cancer (Part B). A systematic search in Pubmed (Medline), Scopus and Web of Science using a combination of keywords defining individual glycation compounds and relevant disease patterns linked to the subject area of food, nutrition and diet retrieved 253 original publications relevant to the research question. Of these, only 192 were found to comply with previously defined quality criteria and were thus considered suitable to assess potential health risks of dietary glycation compounds. For each adverse health effect considered in this assessment, however, only limited numbers of human, animal and in vitro studies were identified. While studies in humans were often limited due to small cohort size, short study duration, and confounders, experimental studies in animals that allow for controlled exposure to individual glycation compounds provided some evidence for impaired glucose tolerance, insulin resistance, cardiovascular effects and renal injury in response to oral exposure to dicarbonyl compounds, albeit at dose levels by far exceeding estimated human exposures. The overall database was generally inconsistent or inconclusive. Based on this systematic review, the SKLM concludes that there is at present no convincing evidence for a causal association between dietary intake of glycation compounds and adverse health effects.
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Affiliation(s)
- Michael Hellwig
- Chair of Special Food Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany
| | | | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition (DIfE), Nuthetal, Germany
| | - Sabine Guth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | - Thomas Henle
- Chair of Food Chemistry, TU Dresden, Dresden, Germany
| | | | - Hans-Georg Joost
- Department of Experimental Diabetology, German Institute of Human Nutrition (DIfE), Nuthetal, Germany
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Jana Raupbach
- Institute of Food Chemistry, Technische Universität Braunschweig, Braunschweig, Germany
| | - Angelika Roth
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), Dortmund, Germany
| | | | - Angela Mally
- Department of Toxicology, University of Würzburg, Würzburg, Germany
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Lecompte L, Crouzier M, Bogaerts S, Scheys L, Vanwanseele B. Reduced Intratendinous Sliding in Achilles Tendinopathy During Active Plantarflexion Regardless of Horizontal Foot Position. Scand J Med Sci Sports 2024; 34:e14679. [PMID: 38898554 DOI: 10.1111/sms.14679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/14/2024] [Accepted: 06/02/2024] [Indexed: 06/21/2024]
Abstract
PURPOSE The Achilles tendon consists of three subtendons with the ability to slide relative to each other. As optimal intratendinous sliding is thought to reduce the overall stress in the tendon, alterations in sliding behavior could potentially play a role in the development of Achilles tendinopathy. The aims of this study were to investigate the difference in intratendinous sliding within the Achilles tendon during isometric contractions between asymptomatic controls and patients with Achilles tendinopathy and the effect of changing the horizontal foot position on intratendinous sliding in both groups. METHODS Twenty-nine participants (13 Achilles tendinopathy and 16 controls) performed isometric plantarflexion contractions at 60% of their maximal voluntary contraction (MVC), in toes-neutral, and at 30% MVC in toes-neutral, toes-in, and toes-out positions during which ultrasound images were recorded. Intratendinous sliding was estimated as the superficial-to-middle and middle-to-deep relative displacement. RESULTS Patients with Achilles tendinopathy present lower intratendinous sliding than asymptomatic controls. Regarding the horizontal foot position in both groups, the toes-out foot position resulted in increased sliding compared with both toes-neutral and toes-out foot position. CONCLUSION We provided evidence that patients with Achilles tendinopathy show lower intratendinous sliding than asymptomatic controls. Since intratendinous sliding is a physiological feature of the Achilles tendon, the external foot position holds promise to increase sliding in patients with Achilles tendinopathy and promote healthy tendon behavior. Future research should investigate if implementing this external foot position in rehabilitation programs stimulates sliding within the Achilles tendon and improves clinical outcome.
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Affiliation(s)
- Laura Lecompte
- Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, Leuven, Belgium
| | - Marion Crouzier
- Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, Leuven, Belgium
- Nantes Université, Mouvement - Interactions - Performance (MIP), Nantes, France
| | - Stijn Bogaerts
- Physical and Rehabilitation Medicine Department, University Hospitals Leuven, Leuven, Belgium
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Lennart Scheys
- Department of Development and Regeneration, Institute for Orthopaedic Research and Training (IORT), KU Leuven, Leuven, Belgium
- Orthopedics Division, University Hospitals Leuven, Leuven, Belgium
| | - Benedicte Vanwanseele
- Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, Leuven, Belgium
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Jia G, Jia X, Yang J, Shi T, Qiang M, Chen Y. Pioglitazone Antagonized the Effects of Advanced Glycation End Products on Achilles Tendon Healing and Improved the Recovery of Tendon Biomechanical Properties. Cell Mol Bioeng 2024; 17:219-228. [PMID: 39050514 PMCID: PMC11263443 DOI: 10.1007/s12195-024-00800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/26/2024] [Indexed: 07/27/2024] Open
Abstract
Purpose Advanced glycation end products (AGEs) often accumulate in the Achilles tendon during the course of diabetes. This study aims to determine the impact of AGEs on tendon repair and explore the role of pioglitazone in mitigating this impact. Methods Forty-eight male 8 week-old Sprague Dawley rats were selected in this study. After transection of Achilles tendon, the rats were randomly divided into four groups. The Achilles tendons of rats were injected with 1000 mmol/L D-ribose to elevate the content of AGEs within the tendons in two groups, the remaining two groups received injections of phosphate buffered saline (PBS) solution. Subsequently, the first two groups were respectively received oral administration of pioglitazone (20 mg/kg/day) and PBS. The remaining two groups were given the same treatment. The expression of the collagen-I, TNF-α, IL-6 of the repaired tendon were detected. The macroscopic, pathologic and biomechanical aspects of tendon healing were also evaluated. Results AGEs accumulation in tendon during the healing process increases the expression of inflammatory factors such as TNF-α and IL-6, leading to insufficient synthesis of collagen-I and delayed recovery of the tendon's tensile strength. Pioglitazone significantly attenuated the damage caused by AGEs to the tendon healing process, effectively improving the recovery of tendon tensile strength. Pioglitazone could not inhibit the generation of AGEs in the tissue and also had no impact on the normal healing process of the tendon. Conclusions Pioglitazone could prevent the deleterious impact of AGEs on the Achilles tendon healing and improve the biomechanical properties of the tendon.
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Affiliation(s)
- Gengxin Jia
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032 China
| | - Xiaoyang Jia
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032 China
| | - Juan Yang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, 730000 Gansu China
| | - Tianhao Shi
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032 China
| | - Minfei Qiang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032 China
| | - Yanxi Chen
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, 200032 China
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Shahid H, Morya VK, Oh JU, Kim JH, Noh KC. Hypoxia-Inducible Factor and Oxidative Stress in Tendon Degeneration: A Molecular Perspective. Antioxidants (Basel) 2024; 13:86. [PMID: 38247510 PMCID: PMC10812560 DOI: 10.3390/antiox13010086] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/23/2024] Open
Abstract
Tendinopathy is a debilitating condition marked by degenerative changes in the tendons. Its complex pathophysiology involves intrinsic, extrinsic, and physiological factors. While its intrinsic and extrinsic factors have been extensively studied, the role of physiological factors, such as hypoxia and oxidative stress, remains largely unexplored. This review article delves into the contribution of hypoxia-associated genes and oxidative-stress-related factors to tendon degeneration, offering insights into potential therapeutic strategies. The unique aspect of this study lies in its pathway-based evidence, which sheds light on how these factors can be targeted to enhance overall tendon health.
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Affiliation(s)
- Hamzah Shahid
- Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si 18450, Gyeonggi-do, Republic of Korea (J.-H.K.)
- School of Medicine, Hallym University, Chuncheon City 24252, Gangwon-do, Republic of Korea
| | - Vivek Kumar Morya
- Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si 18450, Gyeonggi-do, Republic of Korea (J.-H.K.)
| | - Ji-Ung Oh
- Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si 18450, Gyeonggi-do, Republic of Korea (J.-H.K.)
| | - Jae-Hyung Kim
- Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si 18450, Gyeonggi-do, Republic of Korea (J.-H.K.)
| | - Kyu-Cheol Noh
- Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si 18450, Gyeonggi-do, Republic of Korea (J.-H.K.)
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Van Gulick L, Saby C, Mayer C, Fossier E, Jaisson S, Okwieka A, Gillery P, Chenais B, Mimouni V, Morjani H, Beljebbar A. Biochemical and morpho-mechanical properties, and structural organization of rat tail tendon collagen in diet-induced obesity model. Int J Biol Macromol 2024; 254:127936. [PMID: 37939767 DOI: 10.1016/j.ijbiomac.2023.127936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023]
Abstract
We have investigated the impact of obesity on the structural organization, morpho-mechanical properties of collagen fibers from rat tail tendon fascicles (RTTFs). Polarized Raman microspectroscopy showed that the collagen bands 855, 875, 938, and 960 cm-1 as well as those 1631 and 1660 cm-1 were affected by diet. Mechanical properties exhibited an increase in the yield strength from control (CTRL) to high fat (HF) diet (9.60 ± 1.71 and 13.09 ± 1.81 MPa) (p < 0.01) and ultimate tensile strength (13.12 ± 2.37 and 18.32 ± 2.83 MPa) (p < 0.05) with no significant change in the Young's Modulus. During mechanical, the band at 875 cm-1 exhibited the most relevant frequency shift (2 cm-1). The intensity of those at 855, 875, and 938 cm-1 in HF collagen displayed a comparable response to mechanical stress as compared to CTRL collagen with no significant diet-related changes in the Full Width at Half Maximum. Second harmonic generation technique revealed i) similar fiber straightness (0.963 ± 0.004 and 0.965 ± 0.003) and ii) significant changes in fibers diameter (1.48 ± 0.07 and 1.52 ± 0.08 μm) (p < 0.05) and length (22.06 ± 2.38 and 29.00 ± 3.76 μm) (p < 0.001) between CTRL and HF diet, respectively. The quantification of advanced glycation end products (AGEs) revealed an increase in both carboxymethyl-lysine and total fluorescence AGEs from CTRL to HF RTTFs.
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Affiliation(s)
- Laurence Van Gulick
- Université de Reims Champagne-Ardenne, BioSpecT EA 7506, UFR de Pharmacie, 51096 Reims, France
| | - Charles Saby
- Université de Reims Champagne-Ardenne, BioSpecT EA 7506, UFR de Pharmacie, 51096 Reims, France
| | - Claire Mayer
- BiOSSE, Biology of Organisms, Stress, Health, Environment, Institut Universitaire de Technologie, Département Génie Biologique, Le Mans Université, 53020 Laval, France
| | - Emilie Fossier
- Université de Reims Champagne-Ardenne, BioSpecT EA 7506, UFR de Pharmacie, 51096 Reims, France
| | - Stéphane Jaisson
- Université de Reims Champagne-Ardenne, MEDyC CNRS UMR 7369, UFR de Médecine, 51097 Reims, France; Centre Hospitalo-Universitaire, Service de Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Anaïs Okwieka
- Université de Reims Champagne-Ardenne, MEDyC CNRS UMR 7369, UFR de Médecine, 51097 Reims, France
| | - Philippe Gillery
- Université de Reims Champagne-Ardenne, MEDyC CNRS UMR 7369, UFR de Médecine, 51097 Reims, France; Centre Hospitalo-Universitaire, Service de Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Benoît Chenais
- BiOSSE, Biology of Organisms, Stress, Health, Environment, UFR Sciences et Techniques, Le Mans Université, 72085 Le Mans, France
| | - Virginie Mimouni
- BiOSSE, Biology of Organisms, Stress, Health, Environment, Institut Universitaire de Technologie, Département Génie Biologique, Le Mans Université, 53020 Laval, France
| | - Hamid Morjani
- Université de Reims Champagne-Ardenne, BioSpecT EA 7506, UFR de Pharmacie, 51096 Reims, France
| | - Abdelilah Beljebbar
- Université de Reims Champagne-Ardenne, BioSpecT EA 7506, UFR de Pharmacie, 51096 Reims, France.
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Park HB, Gwark JY, Jung J. Associations of normal fasting glucose levels and of insulin resistance with degenerative rotator cuff tear : Normoglycemia and rotator cuff tear. BMC Musculoskelet Disord 2023; 24:973. [PMID: 38102571 PMCID: PMC10724963 DOI: 10.1186/s12891-023-06899-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/20/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND The upper normoglycemic range has been proposed as a risk factor for degenerative rotator cuff tendon tear (RCT), and insulin resistance has been suggested as a risk factor for tendinopathy. However, no research has established their association with degenerative RCT in the general population. This study aimed to determine whether fasting glucose levels and insulin resistance are risk factors for degenerative RCT in the normoglycemic population and identify the risk range for fasting glucose. METHODS This study included 418 normoglycemic participants from a rural cohort. Participants completed questionnaires, physical exams, blood tests, and MRI evaluations of both shoulders. Insulin resistance was assessed using a triglyceride/high-density-lipoprotein (TG/HDL) ≥ 3.5. Logistic regression analysis was used to determine the association between fasting glucose level, TG/HDL ≥ 3.5, and other factors and degenerative RCT. The study calculated the areas under the receiver operating characteristic curve (AUC) to determine the more appropriate predicting value between the scale and categorical values of fasting glucose levels, and compared the AUCs using the DeLong method. RESULTS In the multivariable analyses, both scale and categorical values of fasting glucose levels, and TG/HDL ≥ 3.5 were significantly associated with degenerative RCT. Fasting glucose levels ≥ 90.5 mg/dL (OR: 3.87, 95% CI: 2.10-7.06) in scale value and 90-99 mg/dL (OR: 4.13, 95% CI: 2.87-8.12) in categorical value were significantly associated with degenerative RCT (P < .001). The AUC of the scale value of fasting glucose levels ≥ 90.5 mg/dL was 0.68. The AUC of the categorical value of fasting glucose levels of 90-99 mg/dL was 0.70. Because of the significantly larger AUC of the categorical value of fasting glucose levels of 90-99 mg/dL, those fasting glucose levels were determined to be independently associated with degenerative RCT (P < .001). CONCLUSIONS High fasting glucose levels within the normal range may link to increase insulin resistance and risk of degenerative RCT. Normoglycemic levels of 90-99 mg/dL and insulin resistance may be risk factors for degenerative RCT. LEVEL OF EVIDENCE Level III, prognostic study.
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Affiliation(s)
- Hyung Bin Park
- Department of Orthopaedic Surgery, Gyeongsang National University School of Medicine, Gyeongsang National University Changwon Hospital, 11 Samjeongja-ro Seongsan- gu, Changwon, 51472, Republic of Korea.
- Gyeongsang institute of medical sciences, Gyeongsang national university, Jinju, Republic of Korea.
| | - Ji-Yong Gwark
- Department of Orthopaedic Surgery, Gyeongsang National University School of Medicine, Gyeongsang National University Changwon Hospital, 11 Samjeongja-ro Seongsan- gu, Changwon, 51472, Republic of Korea
- Gyeongsang institute of medical sciences, Gyeongsang national university, Jinju, Republic of Korea
| | - Jaehoon Jung
- Division of Endocrinology, Department of Internal Medicine, School of Medicine, Gyeongsang National University, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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Xergia SA, Tsarbou C, Liveris NI, Hadjithoma Μ, Tzanetakou IP. Risk factors for Achilles tendon rupture: an updated systematic review. PHYSICIAN SPORTSMED 2023; 51:506-516. [PMID: 35670156 DOI: 10.1080/00913847.2022.2085505] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 05/30/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Identifying risk factors for Achilles Tendon Rupture (ATR) is one of the first necessary steps for its prevention. This systematic review aimed to update the systematic review published in 2014 in ATR etiology. METHODOLOGY A systematic review was carried out using PubMed, EBSCO, and ScienceDirect databases. All types of research studies (Randomized Control Trials - RCTs, Cohort studies, Case-control studies and Cross-sectional studies) that considered ATR, were eligible. The inclusion criteria for eligibility of the studies were to be written in the English language, and to include populations of men and/or women, both athletes, and non-athletes, healthy individuals, and patients. Two independent reviewers used the assessment instrument Newcastle-Ottawa Scale independently, to evaluate the quality of each selected study. Further, two reviewers worked independently to extract the study characteristics, and the GRADE methodology was used to assess the level of certainty of each risk factor. RESULTS From 9526 studies initially identified, 19 studies were eligible for further analysis to identify risk factors for ATR. Seventeen studies were considered good quality, and two studies fair quality. Low to very low certainty of evidence was found for the following medications: steroids, quinolones, and oral bisphosphonate, as well as for other factors such as chronic tendon inflammation and Achilles' tendinopathy, spring season, diabetes, previous musculoskeletal injury, regular participation in athletic activity, hyperparathyroidism, renal failure, and genetic factors. CONCLUSIONS The risk factors found prove that ATR is a multifactorial injury. Appropriate methodologies and well-designed studies are needed to determine the factors and their significance in ATR risk. Finally, the role of biomechanical and psychological aspects in the ATR etiology may be of interest in future studies, as we could not extract relative data in our review.
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Affiliation(s)
- Sofia A Xergia
- Department of Physiotherapy, School of Health Rehabilitation Sciences, University of Patras, Aigio, Greece
| | - Charis Tsarbou
- Department of Physiotherapy, School of Health Rehabilitation Sciences, University of Patras, Aigio, Greece
| | - Nikolaos I Liveris
- Department of Physiotherapy, School of Health Rehabilitation Sciences, University of Patras, Aigio, Greece
| | - Μaria Hadjithoma
- Department of Health Science, European University of Cyprus, Nicosia, Cyprus
| | - Irene P Tzanetakou
- Department of Life Sciences, European University of Cyprus, Nicosia, Cyprus
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Boldt KS, Olson BL, Thiele RM. Effects of Collagen and Exercise on Tendon Properties and Pain: A Critically Appraised Topic. J Sport Rehabil 2023; 32:938-941. [PMID: 37758259 DOI: 10.1123/jsr.2023-0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/15/2023] [Accepted: 07/18/2023] [Indexed: 10/03/2023]
Abstract
CLINICAL SCENARIO Achilles tendon ruptures are prevalent and devastating injuries that require the need for extensive rehabilitation. The methods for preventing these injuries vary between different exercise methods and nutritional supplementation. Although proven effective for decreasing pain and increasing tendon properties, the influence of these 2 methods in combination has not yet been evaluated. CLINICAL QUESTION Does exercise combined with collagen supplementation improve Achilles tendon structural and mechanical properties and diminish subsequent patient-reported pain compared with exercise alone in adults? SUMMARY OF KEY FINDINGS Exercise training, including eccentric training protocols and concentric resistance training protocols, combined with collagen supplementation influence Achilles tendon properties and subsequent patient-reported pain compared with exercise alone. CLINICAL BOTTOM LINE Evidence supports that collagen along with exercise training has a significant influence on pain mitigation, augmented cross-sectional area, and tendon thickness, but may have little to no influence on tendon stiffness and microvascularity compared with exercise alone. Further research is needed to determine the effects of combined methods on various populations. STRENGTH OF RECOMMENDATION Collectively, the body of evidence included to answer the clinical question aligns with the strength of recommendation of A.
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Affiliation(s)
- Kylie S Boldt
- Department of Food, Nutrition, Dietetics, and Health, Kansas State University, Manhattan, KS, USA
| | - Bernadette L Olson
- Department of Food, Nutrition, Dietetics, and Health, Kansas State University, Manhattan, KS, USA
| | - Ryan M Thiele
- Department of Food, Nutrition, Dietetics, and Health, Kansas State University, Manhattan, KS, USA
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Kwan KYC, Ng KWK, Rao Y, Zhu C, Qi S, Tuan RS, Ker DFE, Wang DM. Effect of Aging on Tendon Biology, Biomechanics and Implications for Treatment Approaches. Int J Mol Sci 2023; 24:15183. [PMID: 37894875 PMCID: PMC10607611 DOI: 10.3390/ijms242015183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/07/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023] Open
Abstract
Tendon aging is associated with an increasing prevalence of tendon injuries and/or chronic tendon diseases, such as tendinopathy, which affects approximately 25% of the adult population. Aged tendons are often characterized by a reduction in the number and functionality of tendon stem/progenitor cells (TSPCs), fragmented or disorganized collagen bundles, and an increased deposition of glycosaminoglycans (GAGs), leading to pain, inflammation, and impaired mobility. Although the exact pathology is unknown, overuse and microtrauma from aging are thought to be major causative factors. Due to the hypovascular and hypocellular nature of the tendon microenvironment, healing of aged tendons and related injuries is difficult using current pain/inflammation and surgical management techniques. Therefore, there is a need for novel therapies, specifically cellular therapy such as cell rejuvenation, due to the decreased regenerative capacity during aging. To augment the therapeutic strategies for treating tendon-aging-associated diseases and injuries, a comprehensive understanding of tendon aging pathology is needed. This review summarizes age-related tendon changes, including cell behaviors, extracellular matrix (ECM) composition, biomechanical properties and healing capacity. Additionally, the impact of conventional treatments (diet, exercise, and surgery) is discussed, and recent advanced strategies (cell rejuvenation) are highlighted to address aged tendon healing. This review underscores the molecular and cellular linkages between aged tendon biomechanical properties and the healing response, and provides an overview of current and novel strategies for treating aged tendons. Understanding the underlying rationale for future basic and translational studies of tendon aging is crucial to the development of advanced therapeutics for tendon regeneration.
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Affiliation(s)
- Ka Yu Carissa Kwan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka Wai Kerry Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ying Rao
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chenxian Zhu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Shengcai Qi
- Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai 200040, China;
| | - Rocky S. Tuan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong SAR, China
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Dai Fei Elmer Ker
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong SAR, China
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Dan Michelle Wang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China; (K.Y.C.K.); (K.W.K.N.); (Y.R.); (C.Z.); (R.S.T.); (D.F.E.K.)
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Center for Neuromusculoskeletal Restorative Medicine, Hong Kong Science Park, Hong Kong SAR, China
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
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11
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Kononova S, Kashparov M, Xue W, Bobkova N, Leonov S, Zagorodny N. Gut Microbiome Dysbiosis as a Potential Risk Factor for Idiopathic Toe-Walking in Children: A Review. Int J Mol Sci 2023; 24:13204. [PMID: 37686011 PMCID: PMC10488280 DOI: 10.3390/ijms241713204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Idiopathic toe walking (ITW) occurs in about 5% of children. Orthopedic treatment of ITW is complicated by the lack of a known etiology. Only half of the conservative and surgical methods of treatment give a stable positive result of normalizing gait. Available data indicate that the disease is heterogeneous and multifactorial. Recently, some children with ITW have been found to have genetic variants of mutations that can lead to the development of toe walking. At the same time, some children show sensorimotor impairment, but these studies are very limited. Sensorimotor dysfunction could potentially arise from an imbalanced production of neurotransmitters that play a crucial role in motor control. Using the data obtained in the studies of several pathologies manifested by the association of sensory-motor dysfunction and intestinal dysbiosis, we attempt to substantiate the notion that malfunction of neurotransmitter production is caused by the imbalance of gut microbiota metabolites as a result of dysbiosis. This review delves into the exciting possibility of a connection between variations in the microbiome and ITW. The purpose of this review is to establish a strong theoretical foundation and highlight the benefits of further exploring the possible connection between alterations in the microbiome and TW for further studies of ITW etiology.
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Affiliation(s)
- Svetlana Kononova
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Mikhail Kashparov
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia; (M.K.); (N.Z.)
- Scientific and Practical Center for Child Psychoneurology, 119602 Moscow, Russia
| | - Wenyu Xue
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia; (W.X.); (S.L.)
| | - Natalia Bobkova
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Sergey Leonov
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia; (W.X.); (S.L.)
- Institute of Cell Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Nikolaj Zagorodny
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia; (M.K.); (N.Z.)
- N.N. Priorov Central Research Institute of Traumatology and Orthopedics, 127299 Moscow, Russia
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12
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Takenokuchi M, Matsumoto K, Nitta Y, Takasugi R, Inoue Y, Iwai M, Kadoyama K, Yoshida K, Takano-Ohmuro H, Taniguchi T. In Vitro and In Vivo Antiglycation Effects of Connarus ruber Extract. PLANTA MEDICA 2022; 88:1026-1035. [PMID: 34861700 DOI: 10.1055/a-1690-3528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Accumulation of advanced glycation end products (AGEs) of the Maillard reaction has been implicated in the pathogenesis of diabetes and its complications. Connarus ruber has been used as a folk remedy for several diseases, including diabetes; however, its underlying mechanism has not yet been investigated. This study investigated the effects of C. ruber extract against glycation on collagen-linked AGEs in vitro and streptozotocin-induced diabetic rats (STZ-DM rats) in vivo. The antiglycation activities of C. ruber extract and aminoguanidine (AG) were examined using a collagen glycation assay kit. Nonfluorescent AGE, Nε-carboxymethyl lysine (CML), Nω-carboxymethyl arginine, and Nε-carboxyethyl lysine levels were measured via electrospray ionization-liquid chromatography-tandem mass spectrometry. The effect of the extract on the cytotoxicity of methylglyoxal (MG), a precursor of AGEs, was examined in HL60 cells. STZ-DM rats were treated with the extract for 4 wk, and the effect was assessed using biochemical markers in the serum and CML-positive cells in renal tissues. C. ruber extract dose-dependently inhibited the glycation of collagen and formation of nonfluorescent AGEs, which was comparable to AG, and it significantly attenuated MG-induced cytotoxicity in HL60 cells. Furthermore, the glycated albumin levels in STZ-DM rats decreased, the increase in serum lipid levels was reversed, and immunohistochemistry demonstrated that CML deposition in the glomerulus of STZ-DM rats significantly decreased. Although further studies are needed, C. ruber could be a potential therapeutic for preventing and progressing many pathological conditions, including diabetes.
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Affiliation(s)
- Mariko Takenokuchi
- Faculty of Pharmacological Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - Kinuyo Matsumoto
- Faculty of Health and Welfare, Kobe Women's University, Kobe, Hyogo, Japan
| | - Yuko Nitta
- Faculty of Health and Welfare, Kobe Women's University, Kobe, Hyogo, Japan
| | | | - Yukari Inoue
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | - Michi Iwai
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - Keiichi Kadoyama
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | | | | | - Taizo Taniguchi
- Research Institute for Human Health Science, Konan University, Kobe, Hyogo, Japan
- Pharmacrea Kobe Co. Ltd., Kobe, Hyogo, Japan
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13
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Balaji M, Ranganath KV, Pugazhendhi G, Mayasa V, Barathiraja K, Manimaran R, Chandran MP. Management of tendinopathies among south Indians using collagen II peptide, glucosamine and vitamin C. Bioinformation 2022; 18:558-561. [PMID: 37168781 PMCID: PMC10165034 DOI: 10.6026/97320630018558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 11/23/2022] Open
Abstract
Tendinopathy is a multi-factorial, broad spectrum of tendon disorder, characterized by activity-related chronic tendon pain and local tenderness. The point of this study was to assess the adequacy of a nutritional supplement containing Glucosamine, type II collagen and vitamin C on the clinical and auxiliary advancement of tendinopathies. The prospective study was Hospital based randomized control trail comparing the efficacy of collage 2 peptide, glucosamine and vitamin c with placebo in various tendinopathies. All diagnosed patients willing for the treatment attending Konaseema Institute of Medical Sciences during period of 2017-2019 were selected with regular follow up of 2nd week, 2nd month & 6 month. The statistics and visualizations of various observations made in the entire study which include a total of 80 patients with various tendinopathies. 60 of them were given collagen 2, glucosamine and vitamin c (cases) and 20 were given placebo (controls). At the end of 6 months almost 90% patients relieved completely of pain. The duration of maximum benefit to reach is almost around 24 weeks. These are seen more commonly to affect non-athletes rather than athletes.
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Affiliation(s)
- Madarapu Balaji
- Department of Orthopaedics, Maheshwara Medical College and Hospital, Chitkul, Isnapur, Patancheruvu 502307, Telangana, India
| | - Kadiri Venkata Ranganath
- Department of Orthopaedics, Maheshwara Medical College and Hospital, Chitkul, Isnapur, Patancheruvu 502307, Telangana, India
| | - G Pugazhendhi
- Department of Orthopaedics, Sree Balaji Medical College and Hospital, Chromepet, Chennai 600044, India
| | - Vinyas Mayasa
- Department of Pharmacology, MNR College of Pharmacy, Sangareddy, Telangana, India
| | - K Barathiraja
- Department of General Surgery, Sree Balaji Dental College and Hospital, Pallikaranai, Chennai - 600100, India
| | - R Manimaran
- Department of General Surgery, Sree Balaji Medical College and Hospital, Chromepet, Chennai - 600044, India
| | - Manoj Prathap Chandran
- Department of Orthodontics, Sree Balaji Dental College and Hospital, Pallikaranai, Chennai - 600100, India
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14
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Abstract
Tendons are collagen-rich musculoskeletal tissues that possess the mechanical strength needed to transfer forces between muscles and bones. The mechanical development and function of tendons are impacted by collagen crosslinks. However, there is a limited understanding of how collagen crosslinking is regulated in tendon during development and aging. Therefore, the objective of the present review was to highlight potential regulators of enzymatic and non-enzymatic collagen crosslinking and how they impact tendon function. The main collagen crosslinking enzymes include lysyl oxidase (LOX) and the lysyl oxidase-like isoforms (LOXL), whereas non-enzymatic crosslinking is mainly mediated by the formation of advanced glycation end products (AGEs). Regulators of the LOX and LOXL enzymes may include mechanical stimuli, mechanotransducive cell signaling pathways, sex hormones, transforming growth factor (TGF)β family, hypoxia, and interactions with intracellular or extracellular proteins. AGE accumulation in tendon is due to diabetic conditions and aging, and can be mediated by diet and mechanical stimuli. The formation of these enzymatic and non-enzymatic collagen crosslinks plays a major role in tendon biomechanics and in the mechanisms of force transfer. A more complete understanding of how enzymatic and non-enzymatic collagen crosslinking is regulated in tendon will better inform tissue engineering and regenerative therapies aimed at restoring the mechanical function of damaged tendons.
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Affiliation(s)
- A.J. Ellingson
- Chemical and Biological Engineering, University of Idaho, Moscow, ID, USA
| | - N.M. Pancheri
- Chemical and Biological Engineering, University of Idaho, Moscow, ID, USA
| | - N.R. Schiele
- Chemical and Biological Engineering, University of Idaho, Moscow, ID, USA,Address for correspondence: Nathan R. Schiele, Chemical and Biological Engineering, University of Idaho, 875 Perimeter Dr. MS 0904, Moscow, ID, USA. Telephone number: 208 8859063
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15
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Skovgaard D, Siersma VD, Klausen SB, Visnes H, Haukenes I, Bang CW, Bager P, Grävare Silbernagel K, Gaida J, Magnusson SP, Kjaer M, Couppé C. Chronic hyperglycemia, hypercholesterolemia, and metabolic syndrome are associated with risk of tendon injury. Scand J Med Sci Sports 2021; 31:1822-1831. [PMID: 33963621 DOI: 10.1111/sms.13984] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 04/13/2021] [Accepted: 04/26/2021] [Indexed: 12/19/2022]
Abstract
Tendon injury is a considerable problem affecting both physically active and sedentary people. The aim of this study was to examine the relationship between markers for metabolic disorders (hyperglycemia, hypercholesterolemia, and metabolic syndrome) and the risk of developing tendon injuries requiring referral to a hospital. The Copenhagen City Heart Study is a prospective study of diabetic and non-diabetic individuals from the Danish general population with different physical activity levels. The cohort was followed for 3 years via national registers with respect to tendon injuries. Data from 5856 individuals (median age 62 years) were included. The overall incidence of tendon injury in both upper and lower extremities that required an out-patient or in-house visit to a hospital was ~5.7/1000 person years. Individuals with elevated HbA1c (glycated hemoglobin) even in the prediabetic range (HbA1c>5.7%) had a ~3 times higher risk of tendon injury in the lower extremities only, as compared to individuals with normal HbA1C levels. Hypercholesterolemia (total cholesterol>5 mmol/L) increased risk of tendon injury in the upper extremities by ~1.5 times, and individuals with metabolic syndrome had ~2.5 times higher risk of tendon injury in both upper and lower extremities. In conclusion, these data demonstrate for the first time in a large cohort with different physical activity levels that the indicators for metabolic syndrome are a powerful systemic determinant of tendon injury, and two of its components, hyperglycemia and hypercholesterolemia, each independently make tendons susceptible for damage and injury.
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Affiliation(s)
- Dorthe Skovgaard
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery M, Copenhagen University Hospital - Bispebjerg and Frederiksberg and Center for Healthy Aging, Institute of Sports Medicine Copenhagen, University of Copenhagen, Copenhagen, Denmark
| | - Volkert D Siersma
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Soren Bering Klausen
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.,Musculoskeletal Rehabilitation Research Unit, Department of Physical Therapy, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Håvard Visnes
- Department of Orthopedic Surgery, Haukeland University Hospital, Bergen, Norway.,Department of Orthopedics, Sorlandet Hospital Kristiansand, Oslo, Norway.,Oslo Sports trauma Research Centre, Norwegian School of Sports Sciences, Oslo, Norway
| | - Inger Haukenes
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Christine W Bang
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Peter Bager
- Department of Epidemiology Research, Statens Serum Institute, Copenhagen, Denmark
| | | | - Jamie Gaida
- Institute for Research Institute for Sport and Exercise (UCRISE), University of Canberra, Canberra, ACT, Australia
| | - Stig Peter Magnusson
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery M, Copenhagen University Hospital - Bispebjerg and Frederiksberg and Center for Healthy Aging, Institute of Sports Medicine Copenhagen, University of Copenhagen, Copenhagen, Denmark.,Musculoskeletal Rehabilitation Research Unit, Department of Physical Therapy, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Michael Kjaer
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery M, Copenhagen University Hospital - Bispebjerg and Frederiksberg and Center for Healthy Aging, Institute of Sports Medicine Copenhagen, University of Copenhagen, Copenhagen, Denmark
| | - Christian Couppé
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery M, Copenhagen University Hospital - Bispebjerg and Frederiksberg and Center for Healthy Aging, Institute of Sports Medicine Copenhagen, University of Copenhagen, Copenhagen, Denmark.,Musculoskeletal Rehabilitation Research Unit, Department of Physical Therapy, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
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16
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Arakawa S, Suzuki R, Kurosaka D, Ikeda R, Hayashi H, Kayama T, Ohno RI, Nagai R, Marumo K, Saito M. Mass spectrometric quantitation of AGEs and enzymatic crosslinks in human cancellous bone. Sci Rep 2020; 10:18774. [PMID: 33139851 PMCID: PMC7606603 DOI: 10.1038/s41598-020-75923-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/19/2020] [Indexed: 02/07/2023] Open
Abstract
Advanced glycation end-products (AGEs) deteriorate bone strength. Among over 40 species identified in vivo, AGEs other than pentosidine were roughly estimated as total fluorescent AGEs (tfAGEs) due to technical difficulties. Using LC-QqTOF-MS, we established a system that enabled the quantitation of five AGEs (CML, CEL, MG-H1, CMA and pentosidine) as well as two mature and three immature enzymatic crosslinks. Human bone samples were collected from 149 patients who underwent total knee arthroplasty. Their clinical parameters were collected to investigate parameters that may be predictive of AGE accumulation. All the analytes were quantitated and showed significant linearity with high sensitivity and precision. The results showed that MG-H1 was the most abundant AGE, whereas pentosidine was 1/200-1/20-fold less abundant than the other four AGEs. The AGEs were significantly and strongly correlated with pentosidine, while showing moderate correlation with tfAGEs. Interestingly, multiple linear regression analysis revealed that gender contributed most to the accumulation of all the AGEs, followed by age, tartrate-resistant acid phosphatase-5b and HbA1c. Furthermore, the AGEs were negatively correlated with immature crosslinks. Mass spectrometric quantitation of AGEs and enzymatic crosslinks is crucial to a better understanding of ageing- and disease-related deterioration of bone strength.
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Affiliation(s)
- Shoutaro Arakawa
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan.
- Laboratory of Food and Regulation Biology, School of Agriculture, Tokai University, 9-1-1, Toroku, Higashi-ku, Kumamoto, 862-8652, Japan.
| | - Ryusuke Suzuki
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
- Laboratory of Food and Regulation Biology, School of Agriculture, Tokai University, 9-1-1, Toroku, Higashi-ku, Kumamoto, 862-8652, Japan
| | - Daisaburo Kurosaka
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Ryo Ikeda
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hiroteru Hayashi
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Tomohiro Kayama
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Rei-Ichi Ohno
- Laboratory of Food and Regulation Biology, School of Agriculture, Tokai University, 9-1-1, Toroku, Higashi-ku, Kumamoto, 862-8652, Japan
| | - Ryoji Nagai
- Laboratory of Food and Regulation Biology, School of Agriculture, Tokai University, 9-1-1, Toroku, Higashi-ku, Kumamoto, 862-8652, Japan
| | - Keishi Marumo
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Mitsuru Saito
- Department of Orthopaedic Surgery, Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
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17
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Suzuki A, Yabu A, Nakamura H. Advanced glycation end products in musculoskeletal system and disorders. Methods 2020; 203:179-186. [PMID: 32987130 DOI: 10.1016/j.ymeth.2020.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023] Open
Abstract
The human population is ageing globally, and the number of old people is increasing yearly. Diabetes is common in the elderly, and the number of diabetic patients is also increasing. Elderly and diabetic patients often have musculoskeletal disorder, which are associated with advanced glycation end products (AGEs). AGEs are heterogeneous molecules derived from non-enzymatic products of the reaction of glucose or other sugar derivatives with proteins or lipids, and many different types of AGEs have been identified. AGEs are a biomarker for ageing and for evaluating disease conditions. Fluorescence, spectroscopy, mass spectrometry, chromatography, and immunological methods are commonly used to measure AGEs, but there is no standardized evaluation method because of the heterogeneity of AGEs. The formation of AGEs is irreversible, and they accumulate in tissue, eventually causing damage. AGE accumulation has been confirmed in neuromusculoskeletal tissues, including bones, cartilage, muscles, tendons, ligaments, and nerves, where they adversely affect biomechanical properties by causing charge changes and forming cross-linkages. AGEs also bind to receptors, such as the receptor for AGEs (RAGE), and induce inflammation by intracellular signal transduction. These mechanisms cause many varied aging and diabetes-related pathological conditions, such as osteoporosis, osteoarthritis, sarcopenia, tendinopathy, and neuropathy. Understanding of AGEs related pathomechanism may lead to develop novel methods for the prevention and therapy of such disorders which affect patients' quality of life. Herein, we critically review the current methodology used for detecting AGEs, and present potential mechanisms by which AGEs cause or exacerbate musculoskeletal disorders.
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Affiliation(s)
- Akinobu Suzuki
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Japan.
| | - Akito Yabu
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Japan
| | - Hiroaki Nakamura
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Japan
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18
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Zhang C, Couppé C, Scheijen JLJM, Schalkwijk CG, Kjaer M, Magnusson SP, Svensson RB. Regional collagen turnover and composition of the human patellar tendon. J Appl Physiol (1985) 2020; 128:884-891. [PMID: 32163333 DOI: 10.1152/japplphysiol.00030.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Tendon pathology (tendinopathy) typically occurs in specific regions of a tendon, and growth in response to exercise also appears to be more pronounced in specific regions. In a previous study in animals we found evidence of regional differences in tendon turnover, but whether the turnover of human patellar tendon differs in different regions still remains unknown. Patellar tendons were obtained from cadavers of healthy men and women (body donation program, n = 5 donors, >60 yr of age). Samples were taken from 10 different regions along the length, width, and thickness of the tendon. Turnover was measured by 14C bomb pulse dating and also estimated from the accumulation of advanced glycation end products (AGEs) by fluorescence (340/460 nm) in addition to measurement of specific AGEs by mass spectrometry. Composition in terms of collagen, glycosaminoglycans (GAGs), and DNA was also assessed in each region. 14C results showed that all tendon regions had a similar 14C concentration, which was equal to the average atmospheric 14C concentration during the first 15 yr of the person's life. Fluorescence normalized to dry weight did not differ between regions, nor did specific AGEs. Higher GAG content was observed in the proximal and near the distal insertion of the tendon. In conclusion, healthy human patellar tendon displays no regional differences in collagen turnover throughout life.NEW & NOTEWORTHY Tendon injuries and tendinopathies typically occur in specific regions of the tendon, but the reason for this specificity is not well understood. A potential factor in injury susceptibility is tissue turnover, and previous work suggests that the tendon core has practically no turnover during adult life; however, it is not known whether this is true for other regions of the tendon. Our present results on healthy human patellar tendon clearly demonstrate that turnover does not differ between regions and thereby cannot explain differences in injury susceptibility. The findings also indicate that all regions of the tendon are formed simultaneously during skeletal maturation and do not turn over appreciably during adulthood. This is an important finding because little is known about tendon growth during maturation in humans.
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Affiliation(s)
- Cheng Zhang
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Bispebjerg Hospital, Copenhagen, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - Christian Couppé
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Bispebjerg Hospital, Copenhagen, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.,Department of Physical and Occupational Therapy, Bispebjerg Hospital, Copenhagen, Denmark
| | - Jean L J M Scheijen
- CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, The Netherlands.,Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Casper G Schalkwijk
- CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, The Netherlands.,Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Michael Kjaer
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Bispebjerg Hospital, Copenhagen, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - S Peter Magnusson
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Bispebjerg Hospital, Copenhagen, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.,Department of Physical and Occupational Therapy, Bispebjerg Hospital, Copenhagen, Denmark
| | - Rene B Svensson
- Institute of Sports Medicine Copenhagen, Department of Orthopedic Surgery, Bispebjerg Hospital, Copenhagen, Denmark.,Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
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19
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Ultrasound speckle tracking of Achilles tendon in individuals with unilateral tendinopathy: a pilot study. Eur J Appl Physiol 2020; 120:579-589. [DOI: 10.1007/s00421-020-04317-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 02/03/2020] [Indexed: 10/25/2022]
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20
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Connizzo BK, Piet JM, Shefelbine SJ, Grodzinsky AJ. Age-associated changes in the response of tendon explants to stress deprivation is sex-dependent. Connect Tissue Res 2020; 61:48-62. [PMID: 31411079 PMCID: PMC6884684 DOI: 10.1080/03008207.2019.1648444] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose of the Study: The incidence of tendon injuries increases dramatically with age, which presents a major clinical burden. While previous studies have sought to identify age-related changes in extracellular matrix structure and function, few have been able to explain fully why aged tissues are more prone to degeneration and injury. In addition, recent studies have also demonstrated that age-related processes in humans may be sex-dependent, which could be responsible for muddled conclusions in changes with age. In this study, we investigate short-term responses through an ex vivo explant culture model of stress deprivation that specifically questions how age and sex differentially affect the ability of tendons to respond to altered mechanical stimulus.Materials and Methods: We subjected murine flexor explants from young (4 months of age) and aged (22-24 months of age) male and female mice to stress-deprived culture conditions for up to 1 week and investigated changes in viability, cell metabolism and proliferation, matrix biosynthesis and composition, gene expression, and inflammatory responses throughout the culture period.Results and Conclusions: We found that aging did have a significant influence on the response to stress deprivation, demonstrating that aged explants have a less robust response overall with reduced metabolic activity, viability, proliferation, and biosynthesis. However, age-related changes appeared to be sex-dependent. Together, this work demonstrates that the aging process and the subsequent effect of age on the ability of tendons to respond to stress-deprivation are inherently different based on sex, where male explants favor increased activity, apoptosis, and matrix remodeling while female explants favor reduced activity and tissue preservation.
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Affiliation(s)
- Brianne K. Connizzo
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States,Correspondence: Brianne K. Connizzo, 70 Massachusetts Avenue, NE47-377, Cambridge, MA 02139, T: 617-253-2469,
| | - Judith M. Piet
- Department of Bioengineering, Northeastern University, Boston, MA 02115, United States
| | - Sandra J. Shefelbine
- Department of Bioengineering, Northeastern University, Boston, MA 02115, United States,Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02115, United States
| | - Alan J. Grodzinsky
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States,Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States,Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, United States,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
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21
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Patel SH, Yue F, Saw SK, Foguth R, Cannon JR, Shannahan JH, Kuang S, Sabbaghi A, Carroll CC. Advanced Glycation End-Products Suppress Mitochondrial Function and Proliferative Capacity of Achilles Tendon-Derived Fibroblasts. Sci Rep 2019; 9:12614. [PMID: 31471548 PMCID: PMC6717202 DOI: 10.1038/s41598-019-49062-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 08/16/2019] [Indexed: 02/07/2023] Open
Abstract
Debilitating cases of tendon pain and degeneration affect the majority of diabetic individuals. The high rate of tendon degeneration persists even when glucose levels are well controlled, suggesting that other mechanisms may drive tendon degeneration in diabetic patients. The purpose of this study was to investigate the impact of advanced glycation end-products on tendon fibroblasts to further our mechanistic understanding of the development and progression of diabetic tendinopathy. We proposed that advanced glycation end-products would induce limitations to mitochondrial function and proliferative capacity in tendon-derived fibroblasts, restricting their ability to maintain biosynthesis of tendon extracellular matrix. Using an in-vitro cell culture system, rat Achilles tendon fibroblasts were treated with glycolaldehyde-derived advanced glycation end-products (0, 50, 100, and 200 μg/ml) for 48 hours in normal glucose (5.5 mM) and high glucose (25 mM) conditions. We demonstrate that tendon fibroblasts treated with advanced glycation end-products display reduced ATP production, electron transport efficiency, and proliferative capacity. These impairments were coupled with alterations in mitochondrial DNA content and expression of genes associated with extracellular matrix remodeling, mitochondrial energy metabolism, and apoptosis. Our findings suggest that advanced glycation end-products disrupt tendon fibroblast homeostasis and may be involved in the development and progression of diabetic tendinopathy.
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Affiliation(s)
- Shivam H Patel
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Shannon K Saw
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA
| | - Rachel Foguth
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
- Purdue Institute for Integrative Neuroscience, West Lafayette, IN, USA
| | - Jason R Cannon
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
- Purdue Institute for Integrative Neuroscience, West Lafayette, IN, USA
| | | | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN, USA
| | - Arman Sabbaghi
- Department of Statistics, Purdue University, West Lafayette, IN, USA
| | - Chad C Carroll
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN, USA.
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
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22
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Effects of Long-Term Physical Activity and Diet on Skin Glycation and Achilles Tendon Structure. Nutrients 2019; 11:nu11061409. [PMID: 31234508 PMCID: PMC6627972 DOI: 10.3390/nu11061409] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/17/2019] [Accepted: 06/20/2019] [Indexed: 01/22/2023] Open
Abstract
Advanced glycation end-products (AGEs) accumulate with aging and have been associated with tissue modifications and metabolic disease. Regular exercise has several health benefits, and the purpose of this study was to investigate the effect of regular long-term exercise and diet on skin autofluorescence (SAF) as a measure of glycation and on Achilles tendon structure. In connection with the 2017 European Masters Athletics Championships Stadia, high-level male athletes (n = 194) that had regularly trained for more than 10 years were recruited, in addition to untrained controls (n = 34). SAF was non-invasively determined using an AGE Reader. Achilles tendon thickness and vascular Doppler activity were measured by ultrasonography, and diet was assessed by a questionnaire. There was no significant difference in SAF between the athletes and controls. However, greater duration of exercise was independently associated with lower SAF. Diet also had an effect, with a more "Western" diet in youth being associated with increased SAF. Furthermore, our data demonstrated that greater Achilles tendon thickness was associated with aging and training. Together, our data indicate that long-term exercise may yield a modest reduction in glycation and substantially increase Achilles tendon size, which may protect against injury.
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23
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Praet SFE, Purdam CR, Welvaert M, Vlahovich N, Lovell G, Burke LM, Gaida JE, Manzanero S, Hughes D, Waddington G. Oral Supplementation of Specific Collagen Peptides Combined with Calf-Strengthening Exercises Enhances Function and Reduces Pain in Achilles Tendinopathy Patients. Nutrients 2019; 11:nu11010076. [PMID: 30609761 PMCID: PMC6356409 DOI: 10.3390/nu11010076] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/21/2018] [Accepted: 12/24/2018] [Indexed: 12/18/2022] Open
Abstract
The current pilot study investigates whether oral supplementation of specific collagen peptides improves symptoms and tendon vascularisation in patients with chronic mid-portion Achilles tendinopathy in combination with structured exercise. Participants were given a placebo or specific collagen peptides (TENDOFORTE®) in combination with a bi-daily calf-strengthening program for 6 months. Group AB received specific collagen peptides for the first 3 months before crossing over to placebo. Group BA received placebo first before crossing over to specific collagen peptides. At baseline (T1), 3 (T2) and 6 (T3) months, Victorian Institute of Sports Assessment–Achilles (VISA-A) questionnaires and microvascularity measurements through contrast-enhanced ultrasound were obtained in 20 patients. Linear mixed modeling statistics showed that after 3 months, VISA-A increased significantly for group AB with 12.6 (9.7; 15.5), while in group BA VISA-A increased only by 5.3 (2.3; 8.3) points. After crossing over group AB and BA showed subsequently a significant increase in VISA-A of, respectively, 5.9 (2.8; 9.0) and 17.7 (14.6; 20.7). No adverse advents were reported. Microvascularity decreased in both groups to a similar extent and was moderately associated with VISA-A (Rc2:0.68). We conclude that oral supplementation of specific collagen peptides may accelerate the clinical benefits of a well-structured calf-strengthening and return-to-running program in Achilles tendinopathy patients.
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Affiliation(s)
- Stephan F E Praet
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
- University of Canberra Research Institute for Sport and Exercise (UCRISE), Cnr Allawoona St & Ginninderra Drive Bruce, ACT 2617, Australia.
| | - Craig R Purdam
- Department of Physiotherapy, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - Marijke Welvaert
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
- University of Canberra Research Institute for Sport and Exercise (UCRISE), Cnr Allawoona St & Ginninderra Drive Bruce, ACT 2617, Australia.
| | - Nicole Vlahovich
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - Gregg Lovell
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - Louise M Burke
- Department of Sports Nutrition, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - Jamie E Gaida
- University of Canberra Research Institute for Sport and Exercise (UCRISE), Cnr Allawoona St & Ginninderra Drive Bruce, ACT 2617, Australia.
- Discipline of Physiotherapy, University of Canberra, Building 1/11 Kirinari St, Bruce ACT 2617, Australia.
| | - Silvia Manzanero
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - David Hughes
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
| | - Gordon Waddington
- Department of Sport Medicine, Australian Institute of Sport, Leverrier St, Bruce ACT 2617, Australia.
- University of Canberra Research Institute for Sport and Exercise (UCRISE), Cnr Allawoona St & Ginninderra Drive Bruce, ACT 2617, Australia.
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24
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Nowotny K, Schröter D, Schreiner M, Grune T. Dietary advanced glycation end products and their relevance for human health. Ageing Res Rev 2018; 47:55-66. [PMID: 29969676 DOI: 10.1016/j.arr.2018.06.005] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/23/2022]
Abstract
Due to their bioactivity and harmful potential, advanced glycation end products (AGEs) are discussed to affect human health. AGEs are compounds formed endogenously in the human body andexogenously, especially, in foods while thermal processing. In contrast to endogenous AGEs, dietary AGEs are formed in much higher extent. However, their risk potential is also depending on absorption, distribution, metabolism and elimination. For over 10 years an intense debate on the risk of dietary AGEs on human health is going on. On the one hand, studies provided evidence that dietary AGEs contribute to clinical outcomes. On the other hand, human studies failed to observe any association. Because it was not possible to draw a final conclusion, the call for new interdisciplinary approaches arose. In this review, we will give an overview on the current state of scientific knowledge in this field. In particular, we focus on (I) the occurrence of AGEs in foods and the daily uptake of AGEs, (II) contribution to endogenous levels and (III) the effect on health-/disease-related biomarkers in humans.
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Affiliation(s)
- Kerstin Nowotny
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
| | - David Schröter
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; Leibniz Institute of Vegetable and Ornamental Crops Grossbeeren e.V. (IGZ), 14979 Grossbeeren, Germany; Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, 20146 Hamburg, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops Grossbeeren e.V. (IGZ), 14979 Grossbeeren, Germany; NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14458 Nuthetal, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; Institute of Nutrition, University of Potsdam, 14558 Nuthetal, Germany; German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany; German Center for Cardiovascular Research (DZHK), 10117 Berlin, Germany; NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14458 Nuthetal, Germany.
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25
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26
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Jost T, Zipprich A, Glomb MA. Analysis of Advanced Glycation Endproducts in Rat Tail Collagen and Correlation to Tendon Stiffening. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:3957-3965. [PMID: 29620898 DOI: 10.1021/acs.jafc.8b00937] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Methylglyoxal is a major 1,2-dicarbonyl compound in vivo and leads to nonenzymatic protein modifications, known as advanced glycation endproducts. Especially long-lived proteins like collagen are prone to changes of the mechanical or biological function, respectively, by accumulation of Maillard-derived modifications. Specifically, the resulting nonenzymatic cross-link structures in parallel to the natural maturation process of collagen fibrils lead to complications with age or during disease. A novel lysine-lysine amide cross-link derived from methylglyoxal, 2,15-diamino-8-methyl-9-oxo-7,10-diaza-1,16-hexadecanedioic acid, named MOLA, was synthesized and identified in vitro and in vivo. Tail tendons of young, adult, and old rats (3, 12, and 22 months) were enzymatically digested prior to analysis of acid-labile glycation products via liquid chromatography-tandem mass spectrometry (LC-MS/MS). As a result, nine monovalent amino acid modifications, mostly originating from methylglyoxal (36 μmol/mol leucine-equivalents in total), and four glycation cross-links (0.72 μmol/mol glucosepane, 0.24 μmol/mol DODIC (3-deoxyglucosone-derived imidazoline cross-link), 0.04 μmol/mol MODIC (methylglyoxal-derived imidazoline cross-link), 0.34 μmol/mol MOLA) were quantitated in senescent tendon collagen. The results correlated with increased tail tendon breaking time from 10 to 190 min and indicate that methylglyoxal is a major player in the aging process of connective tissue.
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Affiliation(s)
- Tobias Jost
- Institute of Chemistry-Food Chemistry , Martin-Luther-University Halle-Wittenberg , Kurt-Mothes-Strasse 2 , D-06120 Halle , Germany
| | - Alexander Zipprich
- Department of Internal Medicine I , Martin-Luther-University Halle-Wittenberg , Ernst-Grube-Strasse 40 , D-06120 Halle , Germany
| | - Marcus A Glomb
- Institute of Chemistry-Food Chemistry , Martin-Luther-University Halle-Wittenberg , Kurt-Mothes-Strasse 2 , D-06120 Halle , Germany
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27
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Eriksen CS, Henkel C, Svensson RB, Agergaard AS, Couppé C, Kjaer M, Magnusson SP. Lower tendon stiffness in very old compared with old individuals is unaffected by short-term resistance training of skeletal muscle. J Appl Physiol (1985) 2018; 125:205-214. [PMID: 29596014 DOI: 10.1152/japplphysiol.00028.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Aging negatively affects collagen-rich tissue, like tendons, but in vivo tendon mechanical properties and the influence of physical activity after the 8th decade of life remain to be determined. This study aimed to compare in vivo patellar tendon mechanical properties in moderately old (old) and very old adults and the effect of short-term resistance training. Twenty old (9 women, 11 men, >65 yr) and 30 very old (11 women, 19 men, >83 yr) adults were randomly allocated to heavy resistance training (HRT) or no training (CON) and underwent testing of in vivo patellar tendon (PT) mechanical properties and PT dimensions before and after a 3-mo intervention. Previous measurements of muscle properties, blood parameters, and physical activity level were included in the analysis. Data from 9 old HRT, 10 old CON, 14 very old CON, and 12 old HRT adults were analyzed. In addition to lower quadriceps muscle strength and cross-sectional area (CSA), we found lower PT stiffness and Young's modulus ( P < 0.001) and a trend toward the lower mid-portion PT-CSA ( P = 0.09) in very old compared with old subjects. Daily step count was also lower in very old subjects ( P < 0.001). Resistance training improved muscle strength and cross-sectional area equally in old and very old subjects ( P < 0.05) but did not affect PT mechanical properties or dimension. We conclude that PT material properties are reduced in very old age, and this may likely be explained by reduced physical activity. Three months of resistance training however, could not alter PT mechanical properties in very old individuals. NEW & NOTEWORTHY This research is the first to quantify in vivo tendon mechanical properties in a group of very old adults in their eighties. Patellar tendon stiffness was lower in very old (87 yr on average) compared with moderately old (68 yr on average) individuals. Reduced physical activity with aging may explain some of the loss in tendon stiffness, but regular heavy resistance training for 3 mo was not sufficient to change tendon mechanical properties.
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Affiliation(s)
- Christian Skou Eriksen
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Center for Healthy Aging, Department of Health and Medical Sciences, University of Copenhagen , Copenhagen , Denmark
| | - Cecilie Henkel
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark
| | - Rene B Svensson
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Center for Healthy Aging, Department of Health and Medical Sciences, University of Copenhagen , Copenhagen , Denmark
| | - Anne-Sofie Agergaard
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Department of Physical and Occupational Therapy, Bispebjerg Hospital , Copenhagen , Denmark
| | - Christian Couppé
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Department of Physical and Occupational Therapy, Bispebjerg Hospital , Copenhagen , Denmark
| | - Michael Kjaer
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Center for Healthy Aging, Department of Health and Medical Sciences, University of Copenhagen , Copenhagen , Denmark
| | - S Peter Magnusson
- Institute of Sports Medicine Copenhagen, Bispebjerg Hospital , Copenhagen , Denmark.,Center for Healthy Aging, Department of Health and Medical Sciences, University of Copenhagen , Copenhagen , Denmark.,Department of Physical and Occupational Therapy, Bispebjerg Hospital , Copenhagen , Denmark
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28
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Glycotoxins: Dietary and Metabolic Origins; Possible Amelioration of Neurotoxicity by Carnosine, with Special Reference to Parkinson’s Disease. Neurotox Res 2018; 34:164-172. [DOI: 10.1007/s12640-018-9867-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/01/2018] [Accepted: 01/11/2018] [Indexed: 12/17/2022]
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29
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Skovgaard D, Svensson RB, Scheijen J, Eliasson P, Mogensen P, Hag AMF, Kjær M, Schalkwijk CG, Schjerling P, Magnusson SP, Couppé C. An advanced glycation endproduct (AGE)-rich diet promotes accumulation of AGEs in Achilles tendon. Physiol Rep 2017; 5:5/6/e13215. [PMID: 28336820 PMCID: PMC5371572 DOI: 10.14814/phy2.13215] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 02/23/2017] [Accepted: 02/27/2017] [Indexed: 12/13/2022] Open
Abstract
Advanced Glycation Endproducts (AGEs) accumulate in long‐lived tissue proteins like collagen in bone and tendon causing modification of the biomechanical properties. This has been hypothesized to raise the risk of orthopedic injury such as bone fractures and tendon ruptures. We evaluated the relationship between AGE content in the diet and accumulation of AGEs in weight‐bearing animal Achilles tendon. Two groups of mice (C57BL/6Ntac) were fed with either high‐fat diet low in AGEs high‐fat diet (HFD) (n = 14) or normal diet high in AGEs (ND) (n = 11). AGE content in ND was six to 50‐fold higher than HFD. The mice were sacrificed at week 40 and Achilles and tail tendons were carefully excised to compare weight and nonweight‐bearing tendons. The amount of the AGEs carboxymethyllysine (CML), methylglyoxal‐derived hydroimidazolone (MG‐H1) and carboxyethyllysine (CEL) in Achilles and tail tendon was measured using ultraperformance liquid chromatography tandem mass spectrometry (UPLC‐MS/MS) and pentosidine with high‐pressure liquid chromatography (HPLC) with fluorescent detection. AGEs in Achilles tendon were higher than in tail tendon for CML (P < 0.0001), CEL (P < 0.0001), MG‐H1 and pentosidine (for both ND and HFD) (P < 0.0001). The AGE‐rich diet (ND) resulted in an increase in CML (P < 0.0001), MG‐H1 (P < 0.001) and pentosidine (P < 0.0001) but not CEL, in Achilles and tail tendon. This is the first study to provide evidence for AGE accumulation in injury‐prone, weight‐bearing Achilles tendon associated with intake of an AGE‐rich diet. This indicates that food‐derived AGEs may alter tendon properties and the development of tendon injuries.
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Affiliation(s)
- Dorthe Skovgaard
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - Rene B Svensson
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark
| | - Jean Scheijen
- Experimental Internal Medicine at the Faculty of Health, Medicine and Life Sciences Maastricht University Medical Center, Copenhagen, The Netherlands
| | - Pernilla Eliasson
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark
| | - Pernille Mogensen
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark
| | - Anne Mette F Hag
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - Michael Kjær
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark
| | - Casper G Schalkwijk
- Experimental Internal Medicine at the Faculty of Health, Medicine and Life Sciences Maastricht University Medical Center, Copenhagen, The Netherlands
| | - Peter Schjerling
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark
| | - Stig P Magnusson
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark.,Department of Physical Therapy, Musculoskeletal Rehabilitation Research Unit Bispebjerg Hospital University of Copenhagen, Copenhagen, Denmark
| | - Christian Couppé
- Department of Orthopedic Surgery M, Institute of Sports Medicine and IOC Research Centre Copenhagen, Bispebjerg Hospital and Center for Healthy Aging Faculty of Health and Medical Sciences University of Copenhagen, Copenhagen, Denmark .,Department of Physical Therapy, Musculoskeletal Rehabilitation Research Unit Bispebjerg Hospital University of Copenhagen, Copenhagen, Denmark
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