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Nguyen AT, Aris IM, Snyder BD, Harris MB, Kang JD, Murray M, Rodriguez EK, Nazarian A. Musculoskeletal health: an ecological study assessing disease burden and research funding. LANCET REGIONAL HEALTH. AMERICAS 2024; 29:100661. [PMID: 38225979 PMCID: PMC10788788 DOI: 10.1016/j.lana.2023.100661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 01/17/2024]
Abstract
Background Exacerbated by an aging population, musculoskeletal diseases are a chronic and growing problem in the United States that impose significant health and economic burdens. The objective of this study was to analyze the correlation between the burden of diseases and the federal funds assigned to health-related research through the National Institutes of Health (NIH). Methods An ecological study design was used to examine the relationship between NIH research funding and disease burden for 60 disease categories. We used the Global Burden of Disease (GBD) Study 2019 to measure disease burden and the NIH Research, Condition, and Disease Categories (RCDC) data to identify 60 disease categories aligned with available GBD data. NIH funding data was obtained from the RCDC system and the NIH Office of Budget. Using linear regression models, we observed that musculoskeletal diseases were among the most underfunded (i.e., negative residuals from the model) with respect to disease burden. Findings Musculoskeletal diseases were underfunded, with neck pain being the most underfunded at only 0.83% of expected funding. Low back pain, osteoarthritis, and rheumatoid arthritis were also underfunded at 13.88%, 35.08%, and 66.26%, respectively. Musculoskeletal diseases were the leading cause of years lived with disability and the third leading cause in terms of prevalence and disability-adjusted life years. Despite the increasing burden of these diseases, the allocation of NIH funding to the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) has remained low compared to other institutes. Interpretation Despite the increasing health burden and economic cost of $980 billion annually, the allocation of NIH funding to the NIAMS has remained low compared to other institutes. These findings suggest that the NIH may need to reassess its allocation of research funding to align with the current health challenges of our country. Furthermore, these clinically relevant observations highlight the need to increase research funding for musculoskeletal diseases and improve their prevention, diagnosis, and treatment. Funding No funding.
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Affiliation(s)
- Andrew T. Nguyen
- Harvard Medical School, Boston, MA, USA
- Musculoskeletal Translational Innovation Initiative, Carl J. Shapiro Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Izzuddin M. Aris
- Division of Chronic Disease Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Brian D. Snyder
- Harvard Medical School, Boston, MA, USA
- Musculoskeletal Translational Innovation Initiative, Carl J. Shapiro Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Department of Orthopaedic Surgery, Boston Children’s Hospital, Boston, MA, USA
| | - Mitchel B. Harris
- Harvard Medical School, Boston, MA, USA
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - James D. Kang
- Harvard Medical School, Boston, MA, USA
- Department of Orthopaedic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
| | - Martha Murray
- Harvard Medical School, Boston, MA, USA
- Department of Orthopaedic Surgery, Boston Children’s Hospital, Boston, MA, USA
| | - Edward K. Rodriguez
- Harvard Medical School, Boston, MA, USA
- Musculoskeletal Translational Innovation Initiative, Carl J. Shapiro Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Ara Nazarian
- Harvard Medical School, Boston, MA, USA
- Musculoskeletal Translational Innovation Initiative, Carl J. Shapiro Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Department of Orthopaedic Surgery, Yerevan State University, Yerevan, Armenia
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2
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Liu X, Mao X, Liu Y, Chen W, Li W, Lin N, Zhang Y. Preclinical efficacy of TZG in myofascial pain syndrome by impairing PI3K-RAC2 signaling-mediated neutrophil extracellular traps. iScience 2023; 26:108074. [PMID: 37860777 PMCID: PMC10583084 DOI: 10.1016/j.isci.2023.108074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 05/13/2023] [Accepted: 09/25/2023] [Indexed: 10/21/2023] Open
Abstract
Tianhe Zhuifeng Gao (TZG) shows a satisfying therapeutic efficacy in treating arthromyodynia, which shares similar etiology to myofascial pain syndrome (MPS). We herein aim to explore whether TZG could be a potential prescription for MPS therapy. An MPS rat model was successfully established presenting with reduced pain thresholds, abnormal local switch responses, etc., which was effectively reversed by TZG treatment externally. A transcriptome sequencing based on the active MTrPs samples of rats, combined with network analysis revealed that TZG might ameliorate the progression of MPS by impairing neutrophil extracellular traps (NETs) release through inhibiting PI3K-RAC2 signaling to reduce NADPH oxidase-originated ROS. Experimentally, the expression levels of inducers, biomarkers of NETs formation and vessel injury, and p-PI3K, p-P47, and RAC2 proteins were all significantly up-regulated in affected tissues, which were markedly reversed by TZG. Our results not only shed light into broadening the clinical indications of TZG, but benefit MPS therapy.
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Affiliation(s)
- Xueting Liu
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Xia Mao
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yudong Liu
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Wenjia Chen
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Weijie Li
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Na Lin
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yanqiong Zhang
- Research Center of Traditional Chinese Medicine Theory and Literatures, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Marques Azzini GO, Marques Azzini VO, Santos GS, Visoni S, Fusco MA, Beker NS, Mahmood A, Bizinotto Lana JV, Jeyaraman M, Nallakumarasamy A, Jeyaraman N, da Fonseca LF, Luz Arab MG, Vicente R, Rajendran RL, Gangadaran P, Ahn BC, Duarte Lana JFS. Cannabidiol for musculoskeletal regenerative medicine. Exp Biol Med (Maywood) 2023; 248:445-455. [PMID: 37158062 PMCID: PMC10281618 DOI: 10.1177/15353702231162086] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
Chronic musculoskeletal (MSK) pain is one of the most prevalent causes, which lead patients to a physician's office. The most common disorders affecting MSK structures are osteoarthritis, rheumatoid arthritis, back pain, and myofascial pain syndrome, which are all responsible for major pain and physical disability. Although there are many known management strategies currently in practice, phytotherapeutic compounds have recently begun to rise in the medical community, especially cannabidiol (CBD). This natural, non-intoxicating molecule derived from the cannabis plant has shown interesting results in many preclinical studies and some clinical settings. CBD plays vital roles in human health that go well beyond the classic immunomodulatory, anti-inflammatory, and antinociceptive properties. Recent studies demonstrated that CBD also improves cell proliferation and migration, especially in mesenchymal stem cells (MSCs). The foremost objective of this review article is to discuss the therapeutic potential of CBD in the context of MSK regenerative medicine. Numerous studies listed in the literature indicate that CBD possesses a significant capacity to modulate mammalian tissue to attenuate and reverse the notorious hallmarks of chronic musculoskeletal disorders (MSDs). The most of the research included in this review report common findings like immunomodulation and stimulation of cell activity associated with tissue regeneration, especially in human MSCs. CBD is considered safe and well tolerated as no serious adverse effects were reported. CBD promotes many positive effects which can manage detrimental alterations brought on by chronic MSDs. Since the application of CBD for MSK health is still undergoing expansion, additional randomized clinical trials are warranted to further clarify its efficacy and to understand its cellular mechanisms.
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Affiliation(s)
| | | | - Gabriel Silva Santos
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
| | - Silvia Visoni
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
| | | | | | - Ansar Mahmood
- University Hospitals Birmingham,
Birmingham B15 2PR, UK
| | - João Vitor Bizinotto Lana
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
- Medical Specialties School Centre,
Centro Universitário Max Planck, Indaiatuba, 13343-060, Brazil
| | - Madhan Jeyaraman
- Department of Orthopaedics, A.C.S.
Medical College and Hospital, Dr.M.G.R. Educational and Research Institute, Chennai
600056, India
- Department of Biotechnology, School of
Engineering and Technology, Sharda University, Greater Noida 201310, India
- South Texas Orthopaedic Research
Institute (STORI Inc.), Laredo, TX 78045, USA
- Indian Stem Cell Study Group (ISCSG)
Association, Lucknow 226010, India
| | - Arulkumar Nallakumarasamy
- Indian Stem Cell Study Group (ISCSG)
Association, Lucknow 226010, India
- Department of Orthopaedics, All India
Institute of Medical Sciences, Bhubaneswar 751019, India
| | - Naveen Jeyaraman
- Indian Stem Cell Study Group (ISCSG)
Association, Lucknow 226010, India
- Department of Orthopaedics, Atlas
Hospitals, Tiruchirappalli 620002, India
| | - Lucas Furtado da Fonseca
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
- Universidade Federal de São Paulo
(UNIFESP), São Paulo, 04021-001, Brazil
| | - Miguel Gustavo Luz Arab
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
- Saúde Máxima (SAMAX), São Paulo,
01239-040, Brazil
| | - Rodrigo Vicente
- Brazilian Institute of Regenerative
Medicine (BIRM), Indaiatuba 13334-170, Brazil
- Ultra Sports Science, São Paulo,
Brazil
| | - Ramya Lakshmi Rajendran
- Department of Nuclear Medicine,
School of Medicine, Kyungpook National University Hospital, Kyungpook National
University, Daegu 41944, Republic of Korea
| | - Prakash Gangadaran
- Department of Nuclear Medicine,
School of Medicine, Kyungpook National University Hospital, Kyungpook National
University, Daegu 41944, Republic of Korea
- BK21 FOUR KNU Convergence Educational
Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical
Science, School of Medicine, Kyungpook National University, Daegu 41944, Republic of
Korea
| | - Byeong-Cheol Ahn
- Department of Nuclear Medicine,
School of Medicine, Kyungpook National University Hospital, Kyungpook National
University, Daegu 41944, Republic of Korea
- BK21 FOUR KNU Convergence Educational
Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical
Science, School of Medicine, Kyungpook National University, Daegu 41944, Republic of
Korea
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Sun S, Liu H, Hu Y, Wang Y, Zhao M, Yuan Y, Han Y, Jing Y, Cui J, Ren X, Chen X, Su J. Selection and identification of a novel ssDNA aptamer targeting human skeletal muscle. Bioact Mater 2023; 20:166-178. [PMID: 35663338 PMCID: PMC9157180 DOI: 10.1016/j.bioactmat.2022.05.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle disorders have posed great threats to health. Selective delivery of drugs and oligonucleotides to skeletal muscle is challenging. Aptamers can improve targeting efficacy. In this study, for the first time, the human skeletal muscle-specific ssDNA aptamers (HSM01, etc.) were selected and identified with Systematic Evolution of Ligands by Exponential Enrichment (SELEX). The HSM01 ssDNA aptamer preferentially interacted with human skeletal muscle cells in vitro. The in vivo study using tree shrews showed that the HSM01 ssDNA aptamer specifically targeted human skeletal muscle cells. Furthermore, the ability of HSM01 ssDNA aptamer to target skeletal muscle cells was not affected by the formation of a disulfide bond with nanoliposomes in vitro or in vivo, suggesting a potential new approach for targeted drug delivery to skeletal muscles via liposomes. Therefore, this newly identified ssDNA aptamer and nanoliposome modification could be used for the treatment of human skeletal muscle diseases.
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Affiliation(s)
- Shuming Sun
- Molecular Biology Research Center, Center for Medical Genetics, Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, 410078, China
| | - Han Liu
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Yan Hu
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Yanpeng Wang
- Molecular Biology Research Center, Center for Medical Genetics, Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, 410078, China
| | - Mingri Zhao
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, 410013, China
| | - Yijun Yuan
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, China
| | - Yafei Han
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Yingying Jing
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Jin Cui
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Xiaoxiang Ren
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Xiao Chen
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Jiacan Su
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Naval Medical University, Shanghai, 200433, China
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Kumar L, Bisen M, Khan A, Kumar P, Patel SKS. Role of Matrix Metalloproteinases in Musculoskeletal Diseases. Biomedicines 2022; 10:biomedicines10102477. [PMID: 36289739 PMCID: PMC9598837 DOI: 10.3390/biomedicines10102477] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022] Open
Abstract
Musculoskeletal disorders include rheumatoid arthritis, osteoarthritis, sarcopenia, injury, stiffness, and bone loss. The prevalence of these conditions is frequent among elderly populations with significant mobility and mortality rates. This may lead to extreme discomfort and detrimental effect on the patient’s health and socioeconomic situation. Muscles, ligaments, tendons, and soft tissue are vital for body function and movement. Matrix metalloproteinases (MMPs) are regulatory proteases involved in synthesizing, degrading, and remodeling extracellular matrix (ECM) components. By modulating ECM reconstruction, cellular migration, and differentiation, MMPs preserve myofiber integrity and homeostasis. In this review, the role of MMPs in skeletal muscle function, muscle injury and repair, skeletal muscle inflammation, and muscular dystrophy and future approaches for MMP-based therapies in musculoskeletal disorders are discussed at the cellular and molecule level.
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Affiliation(s)
- Lokender Kumar
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan 173229, India
- Correspondence: (L.K.); (S.K.S.P.); Tel.: +91-017-9235-0000 (L.K.)
| | - Monish Bisen
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan 173229, India
| | - Azhar Khan
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan 173229, India
| | - Pradeep Kumar
- School of Biotechnology, Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan 173229, India
| | - Sanjay Kumar Singh Patel
- Department of Chemical Engineering, Konkuk University, Seoul 05029, Korea
- Correspondence: (L.K.); (S.K.S.P.); Tel.: +91-017-9235-0000 (L.K.)
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Fillipo R, Pruka K, Carvalho M, Horn ME, Moore J, Ramger B, Clewley D. Does the implementation of clinical practice guidelines for low back and neck pain by physical therapists improve patient outcomes? A systematic review. Implement Sci Commun 2022; 3:57. [PMID: 35659117 PMCID: PMC9164354 DOI: 10.1186/s43058-022-00305-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 05/04/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Physical therapy for neck and low back pain is highly variable despite the availability of clinical practice guidelines (CPG). This review aimed to determine the impact of CPG implementation on patient-level outcomes for spinal pain. Implementation strategies were also examined to determine prevalence and potential impact. METHODS Multiple databases were searched through April 2021 for studies assessing CPG implementation in physical therapy for neck and low back pain. Articles were screened for eligibility. The Modified Downs and Black checklist was utilized to determine study quality. Due to the heterogeneity between studies, a meta-analysis was not performed. RESULTS Twenty-one studies were included in this review. Implementation strategies were significantly varied between studies. Outcomes pertaining to healthcare utilization, pain, and physical functioning were assessed in relation to the implementation of CPGs. Multiple implementation strategies were identified, with Managing Quality as the most frequently utilized key implementation process. Findings indicate CPG implementation decreased healthcare utilization, but inconsistent results were found with physical functioning and pain outcomes. CONCLUSIONS CPG implementation appears to have a beneficial effect on healthcare utilization outcomes, but may not impact pain and physical functioning outcomes. Effective CPG implementation strategies remain unknown, though utilizing implementation framework may improve outcomes. More research is needed to determine the most effective implementation strategies and effects on pain and physical function outcomes.
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Affiliation(s)
- Rebecca Fillipo
- Department of Physical Therapy and Occupational Therapy, Duke University Health System, Durham, North Carolina, USA.
| | - Katie Pruka
- Department of Outpatient Rehabilitation, Duke University Health System, Durham, North Carolina, USA
| | - Marissa Carvalho
- Department of Physical Therapy and Occupational Therapy, Duke University Health System, Durham, North Carolina, USA
| | - Maggie E Horn
- Division of Doctor of Physical Therapy, Department of Orthopaedic Surgery, School of Medicine, Duke University, Durham, North Carolina, USA.,Department of Population Health Sciences, School of Medicine, Duke University, Durham, North Carolina, USA
| | - Jordan Moore
- Department of Physical Therapy and Occupational Therapy, Duke University Health System, Durham, North Carolina, USA
| | - Benjamin Ramger
- Department of Outpatient Rehabilitation, Duke University Health System, Durham, North Carolina, USA
| | - Derek Clewley
- Division of Doctor of Physical Therapy, Department of Orthopaedic Surgery, School of Medicine, Duke University, Durham, North Carolina, USA
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Patel V, Chesmore A, Legner CM, Pandey S. Trends in Workplace Wearable Technologies and Connected‐Worker Solutions for Next‐Generation Occupational Safety, Health, and Productivity. ADVANCED INTELLIGENT SYSTEMS 2021. [DOI: 10.1002/aisy.202100099] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Vishal Patel
- Department of Electrical & Computer Engineering Iowa State University 2126 Coover Hall Ames IA 50011 USA
| | - Austin Chesmore
- Department of Electrical & Computer Engineering Iowa State University 2126 Coover Hall Ames IA 50011 USA
| | - Christopher M. Legner
- Department of Electrical & Computer Engineering Iowa State University 2126 Coover Hall Ames IA 50011 USA
| | - Santosh Pandey
- Department of Electrical & Computer Engineering Iowa State University 2126 Coover Hall Ames IA 50011 USA
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Human Mesenchymal Stem Cells: The Present Alternative for High-Incidence Diseases, Even SARS-Cov-2. Stem Cells Int 2020; 2020:8892189. [PMID: 33414832 PMCID: PMC7769649 DOI: 10.1155/2020/8892189] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/06/2020] [Accepted: 11/24/2020] [Indexed: 12/16/2022] Open
Abstract
Mesenchymal stem cells (MSCs), defined as plastic adherent cells with multipotent differentiation capacity in vitro, are an emerging and valuable tool to treat a plethora of diseases due to their therapeutic mechanisms such as their paracrine activity, mitochondrial and organelle transfer, and transfer of therapeutic molecules via exosomes. Nowadays, there are more than a thousand registered clinical trials related to MSC application around the world, highlighting MSC role on difficult-to-treat high-incidence diseases such as the current COVID-19, HIV infections, and autoimmune and metabolic diseases. Here, we summarize a general overview of MSCs and their therapeutic mechanisms; also, we discuss some of the novel clinical trial protocols and their results as well as a comparison between the number of registries, countries, and search portals.
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Ilkevitch A, Lawler T, Rindfleisch JA. Neck Pain. Integr Med (Encinitas) 2018. [DOI: 10.1016/b978-0-323-35868-2.00068-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sheppard PS, Stevenson JM, Graham RB. Sex-based differences in lifting technique under increasing load conditions: A principal component analysis. APPLIED ERGONOMICS 2016; 54:186-195. [PMID: 26851478 DOI: 10.1016/j.apergo.2015.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 08/25/2015] [Accepted: 12/04/2015] [Indexed: 06/05/2023]
Abstract
The objective of the present study was to determine if there is a sex-based difference in lifting technique across increasing-load conditions. Eleven male and 14 female participants (n = 25) with no previous history of low back disorder participated in the study. Participants completed freestyle, symmetric lifts of a box with handles from the floor to a table positioned at 50% of their height for five trials under three load conditions (10%, 20%, and 30% of their individual maximum isometric back strength). Joint kinematic data for the ankle, knee, hip, and lumbar and thoracic spine were collected using a two-camera Optotrak motion capture system. Joint angles were calculated using a three-dimensional Euler rotation sequence. Principal component analysis (PCA) and single component reconstruction were applied to assess differences in lifting technique across the entire waveforms. Thirty-two PCs were retained from the five joints and three axes in accordance with the 90% trace criterion. Repeated-measures ANOVA with a mixed design revealed no significant effect of sex for any of the PCs. This is contrary to previous research that used discrete points on the lifting curve to analyze sex-based differences, but agrees with more recent research using more complex analysis techniques. There was a significant effect of load on lifting technique for five PCs of the lower limb (PC1 of ankle flexion, knee flexion, and knee adduction, as well as PC2 and PC3 of hip flexion) (p < 0.005). However, there was no significant effect of load on the thoracic and lumbar spine. It was concluded that when load is standardized to individual back strength characteristics, males and females adopted a similar lifting technique. In addition, as load increased male and female participants changed their lifting technique in a similar manner.
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Affiliation(s)
- P S Sheppard
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - J M Stevenson
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
| | - R B Graham
- School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada; School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada.
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Sobrian SK, Walters E. Enhanced Satellite Cell Activity in Aging Skeletal Muscle after Manual Acupuncture-Induced Injury. Chin Med 2014. [DOI: 10.4236/cm.2014.51004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Neck Pain. Integr Med (Encinitas) 2012. [DOI: 10.1016/b978-1-4377-1793-8.00048-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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