1
|
Wanionok NE, Molinuevo MS, Fernández JM, Lucas B, Cortizo AM, Castillo EJ, Jiron JM, Claudia S, Leon S, Aguirre JI, McCarthy AD. Skeletal Effects of a Prolonged Oral Metformin Treatment in Adult Wistar Rats. Exp Clin Endocrinol Diabetes 2024. [PMID: 38740375 DOI: 10.1055/a-2324-8661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
INTRODUCTION We previously showed that a 3-week oral metformin (MET) treatment enhances the osteogenic potential of bone marrow stromal cells (BMSCs) and improves several bone histomorphometric parameters in Wistar rats with metabolic syndrome (MetS). However, the skeletal effects of extended periods of MET need to be completely elucidated. Hence, in this study, the impact of a prolonged (3-month) MET treatment was investigated on bone architecture, histomorphometric and biomechanics variables, and osteogenic potential of BMSCs in Wistar rats with or without MetS. MATERIALS AND METHODS Young male Wistar rats (n=36) were randomized into four groups (n=9) that received either 20% fructose (F), MET (MET), F plus MET treatments (FMET), or drinking water alone (Veh). Rats were euthanized, blood was collected, and bones were dissected and processed for peripheral quantitative computed tomography (pQCT) analysis, static and dynamic histomorphometry, and bone biomechanics. In addition, BMSCs were isolated to determine their osteogenic potential. RESULTS MET affected trabecular and cortical bone, altering bone architecture and biomechanics. Furthermore, MET increased the pro-resorptive profile of BMSCs. In addition, fructose-induced MetS practically did not affect the the structural or mechanical variables of the skeleton. CONCLUSION A 3-month treatment with MET (with or without MetS) affects bone architecture and biomechanical variables in Wistar rats.
Collapse
Affiliation(s)
- Nahuel E Wanionok
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - María S Molinuevo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - Juan M Fernández
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - Besada Lucas
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - Ana M Cortizo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - Evelyn J Castillo
- Department of Physiological Sciences, University of Florida, Gainesville, Florida, USA
| | - Jessica M Jiron
- Department of Physiological Sciences, University of Florida, Gainesville, Florida, USA
| | - Sedlinsky Claudia
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - Schurman Leon
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| | - José I Aguirre
- Department of Physiological Sciences, University of Florida, Gainesville, Florida, USA
| | - Antonio D McCarthy
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina
| |
Collapse
|
2
|
Steppe L, Megafu M, Tschaffon-Müller ME, Ignatius A, Haffner-Luntzer M. Fracture healing research: Recent insights. Bone Rep 2023; 19:101686. [PMID: 38163010 PMCID: PMC10757288 DOI: 10.1016/j.bonr.2023.101686] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 01/03/2024] Open
Abstract
Bone has the rare capability of scarless regeneration that enables the complete restoration of the injured bone area. In recent decades, promising new technologies have emerged from basic, translational and clinical research for fracture treatment; however, 5-10 % of all bone fractures still fail to heal successfully or heal in a delayed manner. Several comorbidities and risk factors have been identified which impair bone healing and might lead to delayed bone union or non-union. Therefore, a considerable amount of research has been conducted to elucidate molecular mechanisms of successful and delayed fracture healing to gain further insights into this complex process. One focus of recent research is to investigate the complex interactions of different cell types and the action of progenitor cells during the healing process. Of particular interest is also the identification of patient-specific comorbidities and how these affect fracture healing. In this review, we discuss the recent knowledge about progenitor cells for long bone repair and the influence of comorbidities such as diabetes, postmenopausal osteoporosis, and chronic stress on the healing process. The topic selection for this review was made based on the presented studies at the 2022 annual meeting of the European Calcified Tissue Society (ECTS) in Helsinki.
Collapse
Affiliation(s)
- Lena Steppe
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Germany
| | - Michael Megafu
- A.T. Still University Kirksville College of Osteopathic Medicine, USA
| | | | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Germany
| | | |
Collapse
|
3
|
Surgical Classification for Preclinical Rat Femoral Bone Defect Model: Standardization Based on Systematic Review, Anatomical Analysis and Virtual Surgery. Bioengineering (Basel) 2022; 9:bioengineering9090476. [PMID: 36135022 PMCID: PMC9495991 DOI: 10.3390/bioengineering9090476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 12/03/2022] Open
Abstract
Though surgical techniques profoundly influence in vivo experiments, significant heterogeneity exists in current surgeries for inducing rat femoral bone defects. Such variations reduce the reproducibility and comparability of preclinical studies, and are detrimental to clinical translation. The purposes of this study were: (1) to conduct a systematic review of rat femoral defect models, summarizing and analyzing the surgical techniques; (2) to analyze surgical design and potential pitfalls via 3D anatomy and virtual surgeries for fostering future precision research; and (3) to establish a surgical classification system, for improving the reproducibility and comparability among studies, avoiding unnecessary repetitive experiments. The online database PubMed was searched to identify studies from January 2000 to June 2022 using keywords, including rat, femur, bone defect. Eligible publications were included for a review of surgical methods. Anatomical analysis and virtual surgeries were conducted based on micro-CT reconstruction of the rat femur for further investigation and establishment of a classification system. A total of 545 publications were included, revealing marked heterogeneity in surgical methods. Four major surgical designs were reported for inducing defects from the proximal to distal femur: bone tunnel, cortical window, segmental defect, and wedge-shaped defect. Anatomical analysis revealed potential pitfalls hindering efficient clinical translation. A classification system was established according to the anatomical region, surgical design, and fixation devices. This systematic review in combination with 3D analysis and virtual surgery provides a general overview of current surgical approaches to inducing femoral defects in rats, and establishes a surgical classification facilitating preclinical research of quality and translational value.
Collapse
|
4
|
Hossain MJ, Kendig MD, Letton ME, Morris MJ, Arnold R. Peripheral Neuropathy Phenotyping in Rat Models of Type 2 Diabetes Mellitus: Evaluating Uptake of the Neurodiab Guidelines and Identifying Future Directions. Diabetes Metab J 2022; 46:198-221. [PMID: 35385634 PMCID: PMC8987683 DOI: 10.4093/dmj.2021.0347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/25/2022] [Indexed: 11/08/2022] Open
Abstract
Diabetic peripheral neuropathy (DPN) affects over half of type 2 diabetes mellitus (T2DM) patients, with an urgent need for effective pharmacotherapies. While many rat and mouse models of T2DM exist, the phenotyping of DPN has been challenging with inconsistencies across laboratories. To better characterize DPN in rodents, a consensus guideline was published in 2014 to accelerate the translation of preclinical findings. Here we review DPN phenotyping in rat models of T2DM against the 'Neurodiab' criteria to identify uptake of the guidelines and discuss how DPN phenotypes differ between models and according to diabetes duration and sex. A search of PubMed, Scopus and Web of Science databases identified 125 studies, categorised as either diet and/or chemically induced models or transgenic/spontaneous models of T2DM. The use of diet and chemically induced T2DM models has exceeded that of transgenic models in recent years, and the introduction of the Neurodiab guidelines has not appreciably increased the number of studies assessing all key DPN endpoints. Combined high-fat diet and low dose streptozotocin rat models are the most frequently used and well characterised. Overall, we recommend adherence to Neurodiab guidelines for creating better animal models of DPN to accelerate translation and drug development.
Collapse
Affiliation(s)
- Md Jakir Hossain
- Department of Pharmacology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
| | - Michael D. Kendig
- Department of Pharmacology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
| | - Meg E. Letton
- Department of Exercise Physiology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
| | - Margaret J. Morris
- Department of Pharmacology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
| | - Ria Arnold
- Department of Pharmacology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
- Department of Exercise Physiology, School of Medical Sciences, University of New South Wales (UNSW) Sydney, Sydney, Australia
- Department of Exercise and Rehabilitation, School of Medical, Indigenous and Health Science, University of Wollongong, Wollongong, Australia
- Corresponding author: Ria Arnold https://orcid.org/0000-0002-7469-6587 Department of Exercise Physiology, School of Health Sciences, UNSW Sydney, Sydney, NSW 2052, Australia E-mail:
| |
Collapse
|
5
|
Ko FC, Kobelski MM, Zhang W, Grenga GM, Martins JS, Demay MB. Phosphate restriction impairs mTORC1 signaling leading to increased bone marrow adipose tissue and decreased bone in growing mice. J Bone Miner Res 2021; 36:1510-1520. [PMID: 33900666 DOI: 10.1002/jbmr.4312] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 01/08/2023]
Abstract
Bone marrow stromal cells (BMSCs) are multipotent cells that differentiate into cells of the osteogenic and adipogenic lineage. A striking inverse relationship between bone marrow adipose tissue (BMAT) and bone volume is seen in several conditions, suggesting that differentiation of BMSCs into bone marrow adipocytes diverts cells from the osteogenic lineage, thereby compromising the structural and mechanical properties of bone. Phosphate restriction of growing mice acutely decreases bone formation, blocks osteoblast differentiation and increases BMAT. Studies performed to evaluate the cellular and molecular basis for the effects of acute phosphate restriction demonstrate that it acutely increases 5' adenosine monophosphate-activated protein kinase (AMPK) phosphorylation and inhibits mammalian target of rapamycin complex 1 (mTORC1) signaling in osteoblasts. This is accompanied by decreased expression of Wnt10b in BMSCs. Phosphate restriction also promotes expression of the key adipogenic transcription factors, peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT-enhancer binding protein α (CEBPα), in CXCL12 abundant reticular (CAR) cells, which represent undifferentiated BMSCs and are the main source of BMAT and osteoblasts in the adult murine skeleton. Consistent with this, lineage tracing studies reveal that the BMAT observed in phosphate-restricted mice is of CAR cell origin. To determine whether circumventing the decrease in mTORC1 signaling in maturing osteoblasts attenuates the osteoblast and BMAT phenotype, phosphate-restricted mice with OSX-CreERT2 -mediated haploinsufficiency of the mTORC1 inhibitor, TSC2, were generated. TSC2 haploinsufficiency in preosteoblasts/osteoblasts normalized bone volume and osteoblast number in phosphate-restricted mice and attenuated the increase in BMAT observed. Thus, acute phosphate restriction leads to decreased bone and increases BMAT by impairing mTORC1 signaling in osterix-expressing cells. © 2021 American Society for Bone and Mineral Research (ASBMR).
Collapse
Affiliation(s)
- Frank C Ko
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | | | - Wanlin Zhang
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Gina M Grenga
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Janaina S Martins
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Marie B Demay
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
6
|
Ekeuku SO, Chong PN, Chan HK, Mohamed N, Froemming GR, Okechukwu PN. Spirulina supplementation improves bone structural strength and stiffness in streptozocin-induced diabetic rats. J Tradit Complement Med 2021; 12:225-234. [PMID: 35493310 PMCID: PMC9039118 DOI: 10.1016/j.jtcme.2021.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/26/2022] Open
Abstract
Spirulina (blue-green algae) contains a wide range of nutrients with medicinal properties which include β-carotene, chromium, and moderate amounts of vitamins B12. This study aims to determine the preventive effect of spirulina against bone fragility linked to type 2 diabetes mellitus. Thirty Sprague-Dawley rats were divided into five groups (n = 6) and diabetes was induced using streptozocin. Rats with a plasma glucose level of 10 mmol/L and above were orally treated for twelve weeks with either a single dose of spirulina, metformin, or a combined dose of spirulina + metformin per day. After the treatment, blood and bones were taken for biochemical analysis, three-dimensional imaging, 3-point biomechanical analysis, histology imaging and gene expression using qPCR. Results showed that diabetes induction and treatment with metformin caused destruction in the trabecular microarchitecture of the femur bone, reduction in serum bone marker and expression of bone formation marker genes in the experimental rats. Spirulina supplementation showed improved trabecular microarchitecture with a denser trabecular network, increased 25-OH vitamin D levels, and lowered the level of phosphate and calcium in the serum. Biomechanical tests revealed increased maximum force, stress strain, young modulus and histology images showed improvement in regular mesh and an increase in osteoblasts and osteocytes. There was an increase in the expression of bone formation marker osteocalcin. The results suggest that spirulina supplementation was more effective at improving bone structural strength and stiffness in diabetic rats compared to metformin. Spirulina may be able to prevent T2DM-related brittle bone, lowering the risk of fracture.
Collapse
|
7
|
Ryan G, Magony R, Gortler H, Godbout C, Schemitsch EH, Nauth A. Systemically impaired fracture healing in small animal research: A review of fracture repair models. J Orthop Res 2021; 39:1359-1367. [PMID: 33580554 DOI: 10.1002/jor.25003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/09/2020] [Accepted: 02/10/2021] [Indexed: 02/04/2023]
Abstract
Fracture healing is a complex process requiring mechanical stability, an osteoconductive matrix, and osteoinductive and osteogenic biology. This intricate process is easily disrupted by various patient factors such as chronic disease and lifestyle. As the medical complexity and age of patients with fractures continue to increase, the importance of developing relevant experimental models is becoming paramount in preclinical research. The objective of this review is to describe the most common small animal models of systemically impaired fracture healing used in the orthopedic literature including osteoporosis, diabetes mellitus, smoking, alcohol use, obesity, and ageing. This review will provide orthopedic researchers with a summary of current models of systemically impaired fracture healing used in small animals and present an overview of the methods of induction for each condition.
Collapse
Affiliation(s)
- Gareth Ryan
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Richard Magony
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Hilary Gortler
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Charles Godbout
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Emil H Schemitsch
- Department of Surgery, Division of Orthopaedic Surgery, University of Western Ontario, London, Ontario, Canada
| | - Aaron Nauth
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada.,Department of Surgery, Division of Orthopaedic Surgery, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
8
|
Shitole P, Choubey A, Mondal P, Ghosh R. Influence of low dose naltrexone on Raman assisted bone quality, skeletal advanced glycation end-products and nano-mechanical properties in type 2 diabetic mice bone. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:112011. [PMID: 33812630 DOI: 10.1016/j.msec.2021.112011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 02/15/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022]
Abstract
Type 2 diabetes mellitus (T2DM) commonly affects the bone mineral phase and advanced glycation end-products (AGEs) which eventually led to changes in bone material properties on the nano and macro-scale. Several anti-diabetic compounds are widely used to control high blood sugar or glucose caused by T2DM. Low Dose Naltrexone (LDN), an opiate receptor antagonist, and a known TLR4 antagonist, treatment can improve glucose tolerance and insulin sensitivity in high-fat-diet (HFD) induced T2DM mice. However, the influences of LDN on the local bone quality, mineralization of the bone, and the skeletal AGEs levels have not been fully elucidated. The objective of this study is to understand the effect of LDN on Raman assisted bone quality, skeletal AGEs (determined by Raman spectroscopy), and nano-mechanical properties in HFD induced T2DM mice bone. In order to investigate these, mice and corresponding bones were divided into four groups (divided based on diet and treatment), (a) normal control diet treated with saline water, (b) normal control diet treated with LDN, (c) HFD treated with saline water, and (d) HFD treated with LDN. In T2DM condition (HFD treated with saline water), alteration of Raman-based compositional measures in bone quality including mineral-to-matrix ratios, carbonate substitution, mineral crystallinity, and collagen quality was observed. Our data also indicated that T2DM enhances the skeletal AGEs, and impairs the nano-mechanical properties. Interestingly, present results indicated that LDN controls the Raman-based compositional measures in bone quality in HFD induced T2DM mice bone. Additionally, LDN also protects the alteration of the skeletal AGEs levels and nano-mechanical properties in T2DM mice bone. This study concluded that LDN can control the HFD induced T2DM affected bone abnormalities at multiple hierarchical levels.
Collapse
Affiliation(s)
- Pankaj Shitole
- School of Engineering, Indian Institute of Technology Mandi, Kamand, Mandi, 175005, Himachal Pradesh, India
| | - Abhinav Choubey
- School of Basic Science, Indian Institute of Technology Mandi, Kamand, Mandi, 175005, Himachal Pradesh, India
| | - Prosenjit Mondal
- School of Basic Science, Indian Institute of Technology Mandi, Kamand, Mandi, 175005, Himachal Pradesh, India.
| | - Rajesh Ghosh
- School of Engineering, Indian Institute of Technology Mandi, Kamand, Mandi, 175005, Himachal Pradesh, India.
| |
Collapse
|
9
|
Lin H, Shi F, Jiang S, Wang Y, Zou J, Ying Y, Huang D, Luo L, Yan X, Luo Z. Metformin attenuates trauma-induced heterotopic ossification via inhibition of Bone Morphogenetic Protein signalling. J Cell Mol Med 2020; 24:14491-14501. [PMID: 33169942 PMCID: PMC7754007 DOI: 10.1111/jcmm.16076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 10/04/2020] [Accepted: 10/25/2020] [Indexed: 11/06/2022] Open
Abstract
AMP‐activated protein kinase (AMPK) is an intracellular sensor of energy homoeostasis that is activated under energy stress and suppressed in energy surplus. AMPK activation leads to inhibition of anabolic processes that consume ATP. Osteogenic differentiation is a process that highly demands ATP during which AMPK is inhibited. The bone morphogenetic proteins (BMPs) signalling pathway plays an essential role in osteogenic differentiation. The present study examines the inhibitory effect of metformin on BMP signalling, osteogenic differentiation and trauma‐induced heterotopic ossification. Our results showed that metformin inhibited Smad1/5 phosphorylation induced by BMP6 in osteoblast MC3T3‐E1 cells, concurrent with up‐regulation of Smad6, and this effect was attenuated by knockdown of Smad6. Furthermore, we found that metformin suppressed ALP activity and mineralization of the cells, an event that was attenuated by the dominant negative mutant of AMPK and mimicked by its constitutively active mutant. Finally, administration of metformin prevented the trauma‐induced heterotopic ossification in mice. In conjuncture, AMPK activity and Smad6 and Smurf1 expression were enhanced by metformin treatment in the muscle of injured area, concurrently with the reduction of ALK2. Collectively, our study suggests that metformin prevents heterotopic ossification via activation of AMPK and subsequent up‐regulation of Smad6. Therefore, metformin could be a potential therapeutic drug for heterotopic ossification induced by traumatic injury.
Collapse
Affiliation(s)
- Hui Lin
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology and Department of Pathophysiology, School of Basic Medical Sciences, Queen Mary School, Nanchang University, Nanchang, China
| | - Fuli Shi
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology and Department of Pathophysiology, School of Basic Medical Sciences, Queen Mary School, Nanchang University, Nanchang, China
| | - Shanshan Jiang
- Institute of Hematological Research, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Yuanyuan Wang
- Clinical Systems Biology Laboratory, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Junrong Zou
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology and Department of Pathophysiology, School of Basic Medical Sciences, Queen Mary School, Nanchang University, Nanchang, China
| | - Ying Ying
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology and Department of Pathophysiology, School of Basic Medical Sciences, Queen Mary School, Nanchang University, Nanchang, China
| | - Deqiang Huang
- Research Institute of Digestive Diseases, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Lingyu Luo
- Research Institute of Digestive Diseases, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Xiaohua Yan
- Institute of Basic Biomedical Sciences and Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Zhijun Luo
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology and Department of Pathophysiology, School of Basic Medical Sciences, Queen Mary School, Nanchang University, Nanchang, China
| |
Collapse
|
10
|
Wang L, Shi S, Bai R, Wang Y, Guo Z, Li D. Biological properties of bone marrow stem cells and adipose-derived stem cells derived from T2DM rats: a comparative study. Cell Biosci 2020; 10:102. [PMID: 32939244 PMCID: PMC7487578 DOI: 10.1186/s13578-020-00465-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 08/27/2020] [Indexed: 01/11/2023] Open
Abstract
Background Patients with type 2 diabetes mellitus (T2DM), especially those with poor glycemic control, are characterized by low bone mass and destruction of bone microstructure. Nowadays, autologous mesenchymal stem cells (auto-MSCs) have been used to repair defects and promote tissue regeneration due to handy source, low immunogenicity and self-renewing and multi-differentiating potential. However, T2DM changed the biological properties of auto-MSCs, and investigating the most suitable auto-MSCs for T2DM patients becomes a focus in tissue engineering. Results In this research, we compared the biological characteristics of adipose-derived stem cells (ASCs) and bone marrow stem cells (BMSCs) derived from T2DM rats. These results demonstrated that ASCs had a higher proliferation rate, colony-formation and cell-sheet forming ability, while BMSCs got better osteogenesis-related staining, expression of osteogenesis-related genes and proteins, and osteogenic capacity in vitro. Conclusions As it turned out, ASCs from T2DM had a higher proliferation, while BMSCs had significantly higher osteogenetic ability no matter in vitro and in vivo. Therefore, we should take into account the specific and dominated properties of MSC according to different needs to optimize the protocols and improve clinical outcomes for tissue regeneration of T2DM patients.
Collapse
Affiliation(s)
- Lei Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 98 XiWu Road, Xi'an, 710004 Shaanxi People's Republic of China.,Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004 Shaanxi People's Republic of China
| | - Shaojie Shi
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, School of Stomatology, Air Force Medical University, Xi'an, Shaanxi People's Republic of China
| | - Ruiping Bai
- Department of Math and Physics, School of Basic Medicine, Air Force Medical University, Xi'an, 710032 Shaanxi People's Republic of China
| | - Yue Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 98 XiWu Road, Xi'an, 710004 Shaanxi People's Republic of China.,Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004 Shaanxi People's Republic of China
| | - Zhao Guo
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, 98 XiWu Road, Xi'an, 710004 Shaanxi People's Republic of China.,Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004 Shaanxi People's Republic of China
| | - Doudou Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, School of Stomatology, Air Force Medical University, Xi'an, Shaanxi People's Republic of China
| |
Collapse
|
11
|
Effect of the Abnormal Expression of BMP-4 in the Blood of Diabetic Patients on the Osteogenic Differentiation Potential of Alveolar BMSCs and the Rescue Effect of Metformin: A Bioinformatics-Based Study. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7626215. [PMID: 32596370 PMCID: PMC7298258 DOI: 10.1155/2020/7626215] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/28/2020] [Indexed: 02/08/2023]
Abstract
The success rate of oral implants is lower in type 2 diabetes mellitus (T2DM) patients than in nondiabetic subjects; functional impairment of bone marrow-derived mesenchymal stem cells (BMSCs) is an important underlying cause. Many factors in the blood can act on BMSCs to regulate their biological functions and influence implant osseointegration, but which factors play important negative roles in T2DM patients is still unclear. This study is aimed at screening differentially expressed genes in the blood from T2DM and nondiabetic patients, identifying which genes impact the osteogenic differentiation potential of alveolar BMSCs in T2DM patients, exploring drug intervention regimens, and providing a basis for improving implant osseointegration. Thus, a whole-blood gene expression microarray dataset (GSE26168) of T2DM patients and nondiabetic controls was analyzed. Based on Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) results, differentially expressed genes and signaling pathways related to BMSC osteogenic differentiation were screened, and major risk genes were extracted based on the mean decrease Gini coefficient calculated using the random forest method. Bone morphogenetic protein-4 (BMP-4), with significantly low expression in T2DM blood, was identified as the most significant factor affecting BMSC osteogenic differentiation potential. Subsequently, metformin, a first-line clinical drug for T2DM treatment, was found to improve the osteogenic differentiation potential of BMSCs from T2DM patients via the BMP-4/Smad/Runx2 signaling pathway. These results demonstrate that low BMP-4 expression in the blood of T2DM patients significantly hinders the osteogenic function of BMSCs and that metformin is effective in counteracting the negative impact of BMP-4 deficiency.
Collapse
|
12
|
Banerjee A, Singh S, Prasad SK, Kumar S, Banerjee O, Seal T, Mukherjee S, Maji BK. Protective efficacy of Tinospora sinensis against streptozotocin induced pancreatic islet cell injuries of diabetic rats and its correlation to its phytochemical profiles. JOURNAL OF ETHNOPHARMACOLOGY 2020; 248:112356. [PMID: 31669668 DOI: 10.1016/j.jep.2019.112356] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/17/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tinospora sinensis Lour. (Merr.) belongs to the family Menispermaceae and its stem extract have been used traditionally in broad aspects of therapeutic remedies including debility, dyspepsia, fever, jaundice, ulcer, bronchitis, urinary disease, skin disease, liver disease and diabetes. AIM OF THE STUDY The aim of the study was to evaluate the protective effects of methanol extract of stem of Tinospora sinensis (METS) on streptozotocin induced pancreatic islet cell injuries of diabetic rats and its correlation to its phytochemical profiles. MATERIALS AND METHODS A high-performance liquid chromatography technique (HPLC) was used to identify and quantify the major phytochemicals present in the METS. Diabetic rats were administered with METS at a dose of (100, 200 and 400 mg/kg respectively orally) and standard drug Metformin (300 mg/kg) was given orally to group serving positive control. Effect of the METS on glucose homeostasis, oxidative stress, antioxidant status, histopathology of pancreas and also on intracellular reactive oxygen species (ROS), mitochondrial membrane potential, apoptosis, cell cycle of pancreatic islet cells were studied in diabetic rats. RESULTS The major phytochemicals identified and quantified by HPLC in the extract were berberine, caffeic acid, myricetin and ferulic acid. This result showed that methanol extract exhibited good antioxidant effect. The methanol extract of the plant prevented the diabetogenic effect of STZ and significantly lowered the fasting blood glucose level, glycated haemoglobin and increased insulin and C-peptide level in treated rats. METS reduced apoptosis of STZ treated islet cells by significantly decreasing pro-inflammatory cytokines (TNFα, IL6), intracellular ROS generation, lipid peroxidation, nitric oxide (NO) production and increasing mitochondrial membrane potential and sub-G0 peak area, enzymatic and nonenzymatic antioxidants. CONCLUSION The results revealed that the methanol extract of the stem of the plant possesses protective effects against diabetes and associated complications.
Collapse
Affiliation(s)
- Anindita Banerjee
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India
| | - Siddhartha Singh
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India
| | - Shilpi Kumari Prasad
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India
| | - Sourav Kumar
- Department of Instrumentation Science, Jadavpur University, Jadavpur, Kolkata, 700032, West Bengal, India
| | - Oly Banerjee
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India
| | - Tapan Seal
- Plant Chemistry Department, Botanical Survey of India, Howrah, Shibpur, 711103, West Bengal, India
| | - Sandip Mukherjee
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India
| | - Bithin Kumar Maji
- Department of Physiology, Serampore College, Serampore, Hooghly, 712201, West Bengal, India.
| |
Collapse
|
13
|
Bagheri M, Mostafavinia A, Abdollahifar MA, Amini A, Ghoreishi SK, Chien S, Hamblin MR, Bayat S, Bayat M. Combined effects of metformin and photobiomodulation improve the proliferation phase of wound healing in type 2 diabetic rats. Biomed Pharmacother 2020; 123:109776. [PMID: 31911295 DOI: 10.1016/j.biopha.2019.109776] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/08/2019] [Accepted: 11/29/2019] [Indexed: 12/27/2022] Open
Abstract
We determined the impact of Photobiomodulation (PBM) and metformin administration alone and combined on the inflammation and proliferation steps of wound healing of incisions in type two diabetes mellitus (T2DM) rats. 40 rats were divided into 4 groups (n = 10 each group). A non-genetic model of T2DM was induced in all rats, and an incision was made on each rat. There were 4 groups as follows: Group 1 was control group. Group 2 received PBM alone (890 nm, 80 Hz, 0.324 J/cm2, daily). Group 3 received metformin alone (50 mg/kg, i.p., daily) and the fourth group received combination of PBM + metformin. At inflammation (day 4) and proliferation (day 7) steps, tensiometerical, stereological, and immunohistochemical examinations were performed. PBM and PBM + metformin treatments significantly increased wound strength at inflammation and proliferation steps of wound healing respectively. PBM, metformin, and PBM + metformin groups significantly decreased inflammatory cells at inflammation and proliferation steps of wound healing. PBM, metformin, and PBM + metformin groups significantly improved granulation tissue formation by increasing fibroblasts, and new blood vessel formation at inflammation and proliferation steps of wound healing. Metformin significantly increased M2 macrophages than other treatment groups at inflammation and proliferation steps of wound healing. Simultaneously, PBM significantly decreased M2 macrophages than control group. We concluded PBM and PBM + metformin treatments significantly hastened repair at the inflammation and proliferation steps of repairing skin injury in a non-genetic model of T2 DM. PBM + metformin showed a synergistic impact. There were not a positive relation between M2 macrophage number and wound strength in the studied groups. The details of the molecular mechanisms of PBM, and PBM + metformin treatments of repairing wounds in animals, and treatment of DFUs of patients with T2 DM should be elucidated by further research.
Collapse
Affiliation(s)
- Mohammad Bagheri
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Atarodsadat Mostafavinia
- Department of Anatomy, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abdollah Amini
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | | | - Sufan Chien
- Price Institute of Surgical Research, University of Louisville, Noveratech LLC of Louisville, Louisville, USA.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, USA.
| | - Sahar Bayat
- Illinois Institute of Technology, Chicago, Il, USA.
| | - Mohammad Bayat
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Price Institute of Surgical Research, University of Louisville, Noveratech LLC of Louisville, Louisville, USA.
| |
Collapse
|
14
|
Kalaitzoglou E, Fowlkes JL, Popescu I, Thrailkill KM. Diabetes pharmacotherapy and effects on the musculoskeletal system. Diabetes Metab Res Rev 2019; 35:e3100. [PMID: 30467957 PMCID: PMC6358500 DOI: 10.1002/dmrr.3100] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/14/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022]
Abstract
Persons with type 1 or type 2 diabetes have a significantly higher fracture risk than age-matched persons without diabetes, attributed to disease-specific deficits in the microarchitecture and material properties of bone tissue. Therefore, independent effects of diabetes drugs on skeletal integrity are vitally important. Studies of incretin-based therapies have shown divergent effects of different agents on fracture risk, including detrimental, beneficial, and neutral effects. The sulfonylurea class of drugs, owing to its hypoglycemic potential, is thought to amplify the risk of fall-related fractures, particularly in the elderly. Other agents such as the biguanides may, in fact, be osteo-anabolic. In contrast, despite similarly expected anabolic properties of insulin, data suggests that insulin pharmacotherapy itself, particularly in type 2 diabetes, may be a risk factor for fracture, negatively associated with determinants of bone quality and bone strength. Finally, sodium-dependent glucose co-transporter 2 inhibitors have been associated with an increased risk of atypical fractures in select populations, and possibly with an increase in lower extremity amputation with specific SGLT2I drugs. The role of skeletal muscle, as a potential mediator and determinant of bone quality, is also a relevant area of exploration. Currently, data regarding the impact of glucose lowering medications on diabetes-related muscle atrophy is more limited, although preclinical studies suggest that various hypoglycemic agents may have either aggravating (sulfonylureas, glinides) or repairing (thiazolidinediones, biguanides, incretins) effects on skeletal muscle atrophy, thereby influencing bone quality. Hence, the therapeutic efficacy of each hypoglycemic agent must also be evaluated in light of its impact, alone or in combination, on musculoskeletal health, when determining an individualized treatment approach. Moreover, the effect of newer medications (potentially seeking expanded clinical indication into the pediatric age range) on the growing skeleton is largely unknown. Herein, we review the available literature regarding effects of diabetes pharmacotherapy, by drug class and/or by clinical indication, on the musculoskeletal health of persons with diabetes.
Collapse
Affiliation(s)
- Evangelia Kalaitzoglou
- University of Kentucky Barnstable Brown Diabetes Center Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY, USA
| | - John L Fowlkes
- University of Kentucky Barnstable Brown Diabetes Center Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Iuliana Popescu
- University of Kentucky Barnstable Brown Diabetes Center Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Kathryn M Thrailkill
- University of Kentucky Barnstable Brown Diabetes Center Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY, USA
| |
Collapse
|
15
|
Moriarty TF, Harris LG, Mooney RA, Wenke JC, Riool M, Zaat SAJ, Moter A, Schaer TP, Khanna N, Kuehl R, Alt V, Montali A, Liu J, Zeiter S, Busscher HJ, Grainger DW, Richards RG. Recommendations for design and conduct of preclinical in vivo studies of orthopedic device-related infection. J Orthop Res 2019; 37:271-287. [PMID: 30667561 DOI: 10.1002/jor.24230] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/06/2018] [Indexed: 02/04/2023]
Abstract
Orthopedic device-related infection (ODRI), including both fracture-related infection (FRI) and periprosthetic joint infection (PJI), remain among the most challenging complications in orthopedic and musculoskeletal trauma surgery. ODRI has been convincingly shown to delay healing, worsen functional outcome and incur significant socio-economic costs. To address this clinical problem, ever more sophisticated technologies targeting the prevention and/or treatment of ODRI are being developed and tested in vitro and in vivo. Among the most commonly described innovations are antimicrobial-coated orthopedic devices, antimicrobial-loaded bone cements and void fillers, and dual osteo-inductive/antimicrobial biomaterials. Unfortunately, translation of these technologies to the clinic has been limited, at least partially due to the challenging and still evolving regulatory environment for antimicrobial drug-device combination products, and a lack of clarity in the burden of proof required in preclinical studies. Preclinical in vivo testing (i.e. animal studies) represents a critical phase of the multidisciplinary effort to design, produce and reliably test both safety and efficacy of any new antimicrobial device. Nonetheless, current in vivo testing protocols, procedures, models, and assessments are highly disparate, irregularly conducted and reported, and without standardization and validation. The purpose of the present opinion piece is to discuss best practices in preclinical in vivo testing of antimicrobial interventions targeting ODRI. By sharing these experience-driven views, we aim to aid others in conducting such studies both for fundamental biomedical research, but also for regulatory and clinical evaluation. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:271-287, 2019.
Collapse
Affiliation(s)
- T Fintan Moriarty
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos Platz, Switzerland
| | - Llinos G Harris
- Microbiology and Infectious Diseases, Institute of Life Science, Swansea University Medical School, Swansea, United Kingdom
| | - Robert A Mooney
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, New York
| | - Joseph C Wenke
- Extremity Trauma and Regenerative Medicine Task Area, US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Texas
| | - Martijn Riool
- Amsterdam UMC, University of Amsterdam, Department of Medical Microbiology, Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - Sebastian A J Zaat
- Amsterdam UMC, University of Amsterdam, Department of Medical Microbiology, Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - Annette Moter
- Institute of Microbiology and Infection Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas P Schaer
- Department of Clinical Studies New Bolton Center, University of Pennsylvania, Kennett Square, Pennsylvania
| | - Nina Khanna
- Infection Biology Laboratory, Department of Biomedicine, University Hospital of Basel, Basel, Switzerland.,Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Basel, Basel, Switzerland
| | - Richard Kuehl
- Infection Biology Laboratory, Department of Biomedicine, University Hospital of Basel, Basel, Switzerland.,Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Basel, Basel, Switzerland
| | - Volker Alt
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Giessen-Marburg, GmbH, Campus Giessen, Germany
| | | | - Jianfeng Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, P.R. China
| | - Stephan Zeiter
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos Platz, Switzerland
| | - Henk J Busscher
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - David W Grainger
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, USA.,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, USA
| | - R Geoff Richards
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos Platz, Switzerland
| |
Collapse
|
16
|
Nna VU, Bakar ABA, Ahmad A, Mohamed M. Down-regulation of steroidogenesis-related genes and its accompanying fertility decline in streptozotocin-induced diabetic male rats: ameliorative effect of metformin. Andrology 2018; 7:110-123. [PMID: 30515996 DOI: 10.1111/andr.12567] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/19/2018] [Accepted: 10/29/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Metformin has long been used for glycemic control in diabetic state. Recently, other benefits of metformin beyond blood glucose regulation have emerged. OBJECTIVES To investigate the effect of metformin on the expression of testicular steroidogenesis-related genes, spermatogenesis, and fertility of male diabetic rats. MATERIALS AND METHODS Eighteen adult male Sprague Dawley rats were divided into three groups, namely normal control (NC), diabetic control (DC), and metformin-treated (300 mg/kg body weight/day) diabetic rats (D+Met). Diabetes was induced using a single intraperitoneal injection of streptozotocin (60 mg/kg b.w.), followed by oral treatment with metformin for four weeks. RESULTS Diabetes decreased serum and intratesticular testosterone levels and increased serum but not intratesticular levels of luteinizing hormone. Sperm count, motility, viability, and normal morphology were decreased, while sperm nuclear DNA fragmentation was increased in DC group, relative to NC group. Testicular mRNA levels of androgen receptor, luteinizing hormone receptor, cytochrome P450 enzyme (CYP11A1), steroidogenic acute regulatory (StAR) protein, 3β-hydroxysteroid dehydrogenase (HSD), and 17β-HSD, as well as the level of StAR protein and activities of CYP11A1, 3β-HSD, and 17β-HSD, were decreased in DC group. Similarly, decreased activities of epididymal antioxidant enzymes and increased lipid peroxidation were observed in DC group. Consequently, decreased litter size, fetal weight, mating and fertility indices, and increased pre- and post-implantation losses were recorded in DC group. Following intervention with metformin, we observed increases in serum and intratesticular testosterone levels, Leydig cell count, improved sperm parameters, and decreased sperm nuclear DNA fragmentation. Furthermore, mRNA levels and activities of steroidogenesis-related enzymes were increased, with improved fertility outcome. DISCUSSION AND CONCLUSION Diabetes mellitus is associated with dysregulation of steroidogenesis, abnormal spermatogenesis, and fertility decline. Controlling hyperglycemia is therefore crucial in preserving male reproductive function. Metformin not only regulates blood glucose level, but also preserves male fertility in diabetic state.
Collapse
Affiliation(s)
- V U Nna
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia.,Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar, Nigeria
| | - A B A Bakar
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - A Ahmad
- Basic Science and Oral Biology Unit, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - M Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia.,Unit of Integrative Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| |
Collapse
|
17
|
Chu JY, Yeh KT, Lee RP, Yu TC, Chen IH, Peng CH, Liu KL, Wang JH, Wu WT. Open reduction and internal fixation with plating is beneficial in the early recovery stage for displaced midshaft clavicular fractures in patients aged 30-65 years old. Tzu Chi Med J 2018; 30:242-246. [PMID: 30305789 PMCID: PMC6172902 DOI: 10.4103/tcmj.tcmj_25_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Objectives: Midshaft clavicular fractures are increasingly treated operatively rather than nonoperatively. Studies have shown mixed results for both types of treatment. The aim of this study was to compare the early-stage functional status associated with open reduction and internal fixation (ORIF) with plating and that associated with conservative treatment for displaced midshaft clavicular fractures. Materials and Methods: A single-center retrospective review of the results of 120 cases of displaced midshaft clavicular fractures in patients aged 30–65 years old was conducted. The primary outcome was fracture union status at 6 months. Other outcomes were subjective shoulder value (SSV) scores, visual analog scale (VAS) scores, and radiographic shortening at 6 weeks, 3 months, and 6 months. The complication rates in the operative and nonoperative groups were recorded. Results: The delayed union rate at 6-month postoperatively and VAS scores at 6 weeks, 3 months, and 6 months postinjury were significantly higher in the conservative treatment group than in the ORIF group. SSV scores were significantly improved at 6-month postinjury in the ORIF group. Conclusions: This is the first study to discuss the importance of early-stage functional restoration after ORIF with plating for displaced midshaft clavicular fractures. This surgery leads to lower pain complications in the earlier stages of bone healing and lower delayed union rates compared with conservative treatment, in patients aged 30–65 years old.
Collapse
Affiliation(s)
- Jian-Yuan Chu
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Kuang-Ting Yeh
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ru-Ping Lee
- Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan
| | - Tzai-Chiu Yu
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ing-Ho Chen
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Cheng-Huan Peng
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Kuan-Lin Liu
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Jen-Hung Wang
- Department of Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Wen-Tien Wu
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| |
Collapse
|
18
|
Nna VU, Abu Bakar AB, Md Lazin MRML, Mohamed M. Antioxidant, anti-inflammatory and synergistic anti-hyperglycemic effects of Malaysian propolis and metformin in streptozotocin-induced diabetic rats. Food Chem Toxicol 2018; 120:305-320. [PMID: 30026088 DOI: 10.1016/j.fct.2018.07.028] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/23/2018] [Accepted: 07/15/2018] [Indexed: 01/21/2023]
Abstract
Diabetes mellitus is characterized by hyperglycemia which causes oxidative stress. Propolis has been reported to have antihyperglycemic and antioxidant potentials. The present study therefore examined the anti-hyperglycemic, antioxidant and anti-inflammatory activities of Malaysian propolis (MP) using streptozotocin-induced diabetic rats. Ethanol extract of MP showed in vitro antioxidant (DPPH, FRAP and H2O2 radical scavenging) and α-glucosidase inhibition activities. Male Sprague Dawley rats were either treated with distilled water (normal control and diabetic control), MP (300 mg/kg b. w.), metformin (Met) (300 mg/kg b. w.) or both. After four weeks, fasting blood glucose decreased, while body weight change and serum insulin level increased significantly in MP, Met and MP + Met treated diabetic groups compared to diabetic control (DC) group. Furthermore, pancreatic antioxidant enzymes, total antioxidant capacity, interleukin (IL)-10 and proliferating cell nuclear antigen increased, while malondialdehyde, nuclear factor-kappa B (p65), tumor necrosis factor alpha, IL-1β and cleaved caspase-3 decreased significantly in the treated diabetic groups compared to DC group. Histopathology of the pancreas showed increased islet area and number of beta cells in the treated groups, compared to DC group, with D + MP + Met group comparable to normal control. We conclude that MP has anti-hyperglycemic, antioxidant, anti-inflammatory and antiapoptotic potentials, and exhibits synergistic effect with metformin.
Collapse
Affiliation(s)
- Victor Udo Nna
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kelantan, Malaysia; Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, P.M.B. 1115, Calabar, Cross River State, Nigeria
| | - Ainul Bahiyah Abu Bakar
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kelantan, Malaysia
| | | | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kelantan, Malaysia; Unit of Integrative Medicine, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kelantan, Malaysia.
| |
Collapse
|
19
|
Yan Z, Tian X, Zhu J, Lu Z, Yu L, Zhang D, Liu Y, Yang C, Zhu Q, Cao X. Metformin suppresses UHMWPE particle-induced osteolysis in the mouse calvaria by promoting polarization of macrophages to an anti-inflammatory phenotype. Mol Med 2018; 24:20. [PMID: 30134793 PMCID: PMC6016863 DOI: 10.1186/s10020-018-0013-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/06/2018] [Indexed: 03/02/2023] Open
Abstract
Background Implant failure remains a major obstacle to successful treatment via TJA. Periprosthetic osteolysis and aseptic loosening are considered as proof of wear debris-induced disruption of local regulatory mechanisms related to excessive bone resorption associated with osteolysis and the damage at the bone-prosthesis interface. Therefore, there is an immediate need to explore strategies for limiting and curing periprosthetic osteolysis and aseptic loosening. Methods We analyzed the in vitro cytokine production by primary mouse bone marrow macrophages (BMMs) that were exposed to ultra-high molecular weight polyethylene (UHMWPE) particles and treated with metformin at different concentrations with or without 5-aminoimidazole-4-carboxamide ribonucleoside to activate or inhibit AMPK. A mouse calvarial model was used to examine the in vivo effects of metformin on UHMWPE particle-induced osteolysis. Results With particles, primary mouse BMMs secreted more pro-inflammatory cytokines tumor necrosis factor-α and interleukin (IL)-6. Treatment with metformin inhibited these variations and promoted the release of cytokine IL-10 with anti-inflammatory capability. In vivo, metformin reduced the production of pro-inflammatory cytokines, osteoclastogenesis, and osteolysis, increasing IL-10 production. Metformin also promoted the polarization of macrophages to an anti-inflammatory phenotype in vivo via AMPK activation. Discussion A crucial point in limiting and correcting the periprosthetic osteolysis and aseptic loosening is the inhibition of inflammatory factor production and osteoclast activation induced by activated macrophages. The ability of metformin to attenuate osteolysis induced in mouse calvaria by the particles was related to a reduction in osteoclast number and polarization of macrophages to an anti-inflammatory functional phenotype. Conclusions Metformin could limit the osteolysis induced by implant debris. Therefore, we hypothesized that metformin could be a potential drug for osteolysis induced by implant debris. Electronic supplementary material The online version of this article (10.1186/s10020-018-0013-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Zhao Yan
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Xiaoxi Tian
- Emergency department of Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, China
| | - Jinyu Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zifan Lu
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, Xi'an, 710032, China
| | - Lifeng Yu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Dawei Zhang
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Yanwu Liu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Chongfei Yang
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Qingsheng Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Xiaorui Cao
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| |
Collapse
|
20
|
Titanium implant functionalized with antimiR-138 delivered cell sheet for enhanced peri-implant bone formation and vascularization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 89:52-64. [PMID: 29752119 DOI: 10.1016/j.msec.2018.03.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/20/2018] [Accepted: 03/14/2018] [Indexed: 01/12/2023]
Abstract
Patients with compromised bone conditions still suffer the problem of deficient osseointegration during dental implant treatment. Developing mesenchymal stem cell (MSC) sheet functionalized titanium implant with proper inductive cue to promote osteogenesis and angiogenesis coupling shall be a good solution. In the present study, the antimiR-138 delivered MSC sheet is used to functionalize the Ti implant. The cell sheet can well integrate with the Ti implant to form the MSC sheet-implant complex (MSIC). The antimiR-138 delivered MSIC shows greatly improved osteogenesis and angiogenesis coupling both in vitro and in vivo. In vitro, the antimiR-138 delivered MSIC significantly promotes the expression of endogenous osteogenesis and angiogenesis related genes and proteins, alkaline phosphatase activity, extracellular matrix mineralization and collagen secretion compared to the antimiR-control and the nothing delivered control. The in vivo ectopic implantation assay uncovers the robust vascularized bone formation of the antimiR-138 delivered MSIC. The antimiR-138 delivered MSIC with promoted osteogenesis and angiogenesis coupling is anticipated to lead to rigid osseointegration in the compromised bone conditions.
Collapse
|
21
|
DiDomenico L, Flynn Z, Reed M. Treating Charcot Arthropathy Is a Challenge: Explaining Why My Treatment Algorithm Has Changed. Clin Podiatr Med Surg 2018; 35:105-121. [PMID: 29156160 DOI: 10.1016/j.cpm.2017.08.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Charcot deformity is a challenge that foot and ankle surgeons struggle to manage successfully. Despite the advances in knowledge, technology, and treatment modalities, limb loss is still greater than 10%. This article discusses the efficacy of conservative measures and traditional surgical approaches. It proposes a multidisciplinary team approach, medical optimization, and lifestyle modification to put the patient in the best position to heal. Also discussed is the authors' staged surgical treatment protocol to enhance outcomes and decrease the rate of limb loss.
Collapse
Affiliation(s)
- Lawrence DiDomenico
- St. Elizabeth Medical Center, 8175 Market Street, Youngstown, OH 44512, USA.
| | - Zachary Flynn
- St. Elizabeth Medical Center, 8175 Market Street, Youngstown, OH 44512, USA
| | - Michael Reed
- Northside Medical Center, 500 Gypsy Lane, Youngstown, OH 44512, USA
| |
Collapse
|
22
|
Metformin Prevents Nonunion after Three-Cannulated-Screw Fixation in Displaced Femoral Neck Fractures: A Retrospective Study. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5682541. [PMID: 27990430 PMCID: PMC5136386 DOI: 10.1155/2016/5682541] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 10/07/2016] [Accepted: 10/24/2016] [Indexed: 02/02/2023]
Abstract
Patients aged from 40 to 60 with displaced fractures of the femoral neck (Garden III or IV) who received fixation with three cannulated screws from January 2005 to December 2012 were evaluated retrospectively for the development of nonunion. Plasma HbA1C, a marker for long-term plasma glucose level, anti-T2DM medication, and other potential risk factors were recorded for the purpose of this study. There were no differences between the union and nonunion groups with respect to age, gender, Garden classification, Pauwel's angle, reduction quality, and T2DM presence. There were significant differences in reduction quality and preoperative plasma HbA1C level between patients with and those without union. The odds ratio (OR) for fracture nonunion was 2.659 (95% confidence interval [CI], 1.530–4.620) in subjects with anatomical reduction compared with those without anatomical reduction, 4.797 (95% CI, 1.371–16.778), in subjects with poor blood glucose control (HbA1C > 10%). The metformin usage showed a preventive effect on nonunion development (OR: 0.193 and CI: 0.060–0.616). The nonunion rate of metformin group (6.7%, 6/89) was even much lower than that of patients without T2DM (17.4%, 80/460).
Collapse
|