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Zhu H, Xing C, Dou X, Zhao Y, Peng Y, Feng C, Fang Y. Chiral Hydrogel Accelerates Re-Epithelization in Chronic Wounds via Mechanoregulation. Adv Healthc Mater 2022; 11:e2201032. [PMID: 36052735 DOI: 10.1002/adhm.202201032] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/17/2022] [Indexed: 01/28/2023]
Abstract
Chronic wounds, such as diabetic foot ulcers (DFU), are a serious clinical problem. It is a challenge for the conventional wound dressings to achieve the desirable therapeutic efficacy due to the lack of biomimetic structural environment for rapid re-epithelization. Inspired by the naturally existing chiral structures in skin, a novel amino acid-based chiral hydrogel dressing is developed, consisting of left-handed or right-handed helical fibers self-assembled by l/d-phenylalanine derivatives. Compared to the levorotatory chiral hydrogel (LH), the dextral chiral hydrogel (DH) shows the ability to enhance cell adhesion, proliferation, and migration, and strongly promotes diabetic wound healing and re-epithelialization with a drug-free mode. Interestingly, the dextral chiral hydrogel is able to actively increase adsorption of type I collagen and promote proliferation and migration of keratinocyte in an integrin and YAP-mediated manner. This study not only provides a novel strategy for treatment of chronic wounds by utilizing dextral chiral hydrogel dressings, but also unveils the molecular mechanism for effect of dextral chiral structures on the promoted proliferation of keratinocyte.
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Affiliation(s)
- Hanting Zhu
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China.,Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China
| | - Chao Xing
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaoqiu Dou
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yu Zhao
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yinbo Peng
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China.,Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China
| | - Chuanliang Feng
- State Key Lab of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yong Fang
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China.,Institute of Traumatic Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China
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2
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Customized bioreactor enables the production of 3D diaphragmatic constructs influencing matrix remodeling and fibroblast overgrowth. NPJ Regen Med 2022; 7:25. [PMID: 35468920 PMCID: PMC9038738 DOI: 10.1038/s41536-022-00222-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 03/01/2022] [Indexed: 02/06/2023] Open
Abstract
The production of skeletal muscle constructs useful for replacing large defects in vivo, such as in congenital diaphragmatic hernia (CDH), is still considered a challenge. The standard application of prosthetic material presents major limitations, such as hernia recurrences in a remarkable number of CDH patients. With this work, we developed a tissue engineering approach based on decellularized diaphragmatic muscle and human cells for the in vitro generation of diaphragmatic-like tissues as a proof-of-concept of a new option for the surgical treatment of large diaphragm defects. A customized bioreactor for diaphragmatic muscle was designed to control mechanical stimulation and promote radial stretching during the construct engineering. In vitro tests demonstrated that both ECM remodeling and fibroblast overgrowth were positively influenced by the bioreactor culture. Mechanically stimulated constructs also increased tissue maturation, with the formation of new oriented and aligned muscle fibers. Moreover, after in vivo orthotopic implantation in a surgical CDH mouse model, mechanically stimulated muscles maintained the presence of human cells within myofibers and hernia recurrence did not occur, suggesting the value of this approach for treating diaphragm defects.
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3
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Lei Y, Bortolin L, Benesch-Lee F, Oguntolu T, Dong Z, Bondah N, Billiar K. Hyaluronic acid regulates heart valve interstitial cell contraction in fibrin-based scaffolds. Acta Biomater 2021; 136:124-136. [PMID: 34592445 DOI: 10.1016/j.actbio.2021.09.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/30/2022]
Abstract
Heart valve disease is associated with high morbidity and mortality worldwide resulting in hundreds of thousands of heart valve replacements each year. Tissue engineered heart valves (TEHVs) have the potential to overcome the major limitations of traditional replacement valves; however, leaflet retraction has led to the failure of TEHVs in preclinical studies. As native unmodified hyaluronic acid (HA) is known to promote healthy tissue development in native heart valves, we hypothesize that adding unmodified HA to fibrin-based scaffolds common to tissue engineering will reduce retraction by increasing cell-scaffold interactions and density of the scaffolds. Using a custom high-throughput culture system, we found that incorporating HA into millimeter-scale fibrin-based cell-populated scaffolds increases initial fiber diameter and cell-scaffold interactions, causing a cascade of mechanical, morphological, and cellular responses. These changes lead to higher levels of scaffold compaction and stiffness, increased cell alignment, and less bundling of fibrin fibers by the cells during culture. These effects significantly reduce scaffold retraction and total contractile force each by around 25%. These findings increase our understanding of how HA alters tissue remodeling and could inform the design of the next generation of tissue engineered heart valves to help reduce retraction. STATEMENT OF SIGNIFICANCE: Tissue engineered heart valves (TEHVs) have the potential to overcome the major limitations of traditional replacement valves; however, leaflet retraction induced by excessive myofibroblast activation has led to failure in preclinical studies. Developing valves are rich in hyaluronic acid (HA), which helps maintain a physiological environment for tissue remodeling without retraction. We hypothesized that adding unmodified HA to TEHVs would reduce retraction by increasing cell-scaffold interactions and density of the scaffolds. Using a high-throughput tissue culture platform, we demonstrate that HA incorporation into a fibrin-based scaffold can significantly reduce tissue retraction and total contractile force by increasing fiber bundling and altering cell-mediated matrix remodeling, therefore increasing gel density and stiffness. These finding increase our knowledge of native HA's effects within the extracellular matrix, and provide a new tool for TEHV design.
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Affiliation(s)
- Ying Lei
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Luciano Bortolin
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Frank Benesch-Lee
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Teniola Oguntolu
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Zhijie Dong
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Narda Bondah
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA
| | - Kristen Billiar
- Biomedical Engineering Department, Worcester Polytechnic Institute, Gateway Park 4008, 60 Prescott, Worcester, MA 01605, USA.
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4
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Richardson WJ, Rogers JD, Spinale FG. Does the Heart Want What It Wants? A Case for Self-Adapting, Mechano-Sensitive Therapies After Infarction. Front Cardiovasc Med 2021; 8:705100. [PMID: 34568449 PMCID: PMC8460777 DOI: 10.3389/fcvm.2021.705100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/16/2021] [Indexed: 12/14/2022] Open
Abstract
There is a critical need for interventions to control the development and remodeling of scar tissue after myocardial infarction. A significant hurdle to fibrosis-related therapy is presented by the complex spatial needs of the infarcted ventricle, namely that collagenous buildup is beneficial in the ischemic zone but detrimental in the border and remote zones. As a new, alternative approach, we present a case to develop self-adapting, mechano-sensitive drug targets in order to leverage local, microenvironmental mechanics to modulate a therapy's pharmacologic effect. Such approaches could provide self-tuning control to either promote fibrosis or reduce fibrosis only when and where it is beneficial to do so.
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Affiliation(s)
| | - Jesse D Rogers
- Department of Bioengineering, Clemson University, Clemson, SC, United States
| | - Francis G Spinale
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, SC, United States
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The Role of Abnormal Uterine Junction Zone in the Occurrence and Development of Adenomyosis. Reprod Sci 2021; 29:2719-2730. [PMID: 34515984 DOI: 10.1007/s43032-021-00684-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/28/2021] [Indexed: 02/06/2023]
Abstract
Adenomyosis is a benign disease with a malignant behavior, bothering a lot of women at reproductive age who suffer from increased menstruation, prolonged menstruation, progressive dysmenorrhea, and infertility. At present, there is no effective treatment for adenomyosis. It seriously affects the life quality of these patients. However, the pathogenesis of adenomyosis is not yet clear. Recently, uterus junctional zone, defined as the inner 1/3 of myometrium between endometrium and myometrium, has gained broad attention. As is reported, the structure and function disorder of uterus junctional zone may play an important part in the occurrence and development of adenomyosis. In this issue, the present study generally reviews the role of uterine junction zone and the related mechanisms involved in adenomyosis, such as the local micro-damage, the formation of inflammatory and hypoxic microenvironment, changes of cytokines, and abnormalities of miRNA as well as signal pathways. It will provide new insights and potential therapeutic target strategies for clinical strategies in the management of adenomyosis.
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6
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Buravkova L, Larina I, Andreeva E, Grigoriev A. Microgravity Effects on the Matrisome. Cells 2021; 10:2226. [PMID: 34571874 PMCID: PMC8471442 DOI: 10.3390/cells10092226] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/18/2021] [Accepted: 08/24/2021] [Indexed: 12/15/2022] Open
Abstract
Gravity is fundamental factor determining all processes of development and vital activity on Earth. During evolution, a complex mechanism of response to gravity alterations was formed in multicellular organisms. It includes the "gravisensors" in extracellular and intracellular spaces. Inside the cells, the cytoskeleton molecules are the principal gravity-sensitive structures, and outside the cells these are extracellular matrix (ECM) components. The cooperation between the intracellular and extracellular compartments is implemented through specialized protein structures, integrins. The gravity-sensitive complex is a kind of molecular hub that coordinates the functions of various tissues and organs in the gravitational environment. The functioning of this system is of particular importance under extremal conditions, such as spaceflight microgravity. This review covers the current understanding of ECM and associated molecules as the matrisome, the features of the above components in connective tissues, and the role of the latter in the cell and tissue responses to the gravity alterations. Special attention is paid to contemporary methodological approaches to the matrisome composition analysis under real space flights and ground-based simulation of its effects on Earth.
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Affiliation(s)
- Ludmila Buravkova
- Institute of Biomedical Problems, Russian Academy of Sciences, Khoroshevskoye Shosse 76a, 123007 Moscow, Russia; (I.L.); (E.A.); (A.G.)
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Mechanoregulation of PDZ Proteins, An Emerging Function. Methods Mol Biol 2021; 2256:257-275. [PMID: 34014527 DOI: 10.1007/978-1-0716-1166-1_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Mechanical forces have emerged as essential regulators of cell organization, proliferation, migration, and polarity to regulate cellular and tissue homeostasis. Changes in forces or loss of the cellular response to them can result in abnormal embryonic development and diseases. Over the past two decades, many efforts have been put in deciphering the molecular mechanisms that convert forces into biochemical signals, allowing for the identification of many mechanotransducer proteins. Here we discuss how PDZ proteins are emerging as new mechanotransducer proteins by altering their conformations or localizations upon force loads, leading to the formation of macromolecular modules tethering the cell membrane to the actin cytoskeleton.
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8
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Yan Y, Zou H, Lian X, Yang L. Cyclic mechanical stimulation inhibits rheumatoid arthritis fibroblast-like synoviocytes proliferation via cell cycle arrest. J Biomech 2021; 121:110424. [PMID: 33873113 DOI: 10.1016/j.jbiomech.2021.110424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 03/05/2021] [Accepted: 03/25/2021] [Indexed: 10/21/2022]
Abstract
The imbalance between proliferation and apoptosis of fibroblast-like synoviocytes (FLSs) has been the main cause of rheumatoid arthritis (RA) synovial hyperplasia. Our previous study confirmed that the cyclic mechanical stimulation (CMS) inhibited the proliferation of RA FLSs, but the underlying mechanisms are still unclear. This study aimed to investigate these underlying mechanisms. The in vitro cultured human RA FLSs were subjected to CMS (6%, 1.0 Hz). Cell cycle was detected by flow cytometry. The expression of cyclin D1, cyclin E1, CDK-2 and p27 was detected by reverse transcription-polymerase chain reaction (RT-PCR). MTS assay was used to detect cell viability. Cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2) levels in RA FLSs were detected by western blotting and enzyme-linked immunosorbent assay (ELISA), respectively. The results showed that CMS significantly inhibited the cell cycle transformation of RA FLSs from G1 phase to S phase, which significantly decreased the cell proliferation index. Meanwhile, both cyclin E1 and CDK-2 gene expressions were significantly decreased, p27 gene expression was increased, and no significant change was observed in the expression of cyclin D1. The inhibition of COX-2/PGE2 pathway in RA FLSs by celecoxib treatment showed no effect on the inhibition of RA FLSs proliferation by CMS. In conclusion, CMS inhibited the proliferation of RA FLSs by modulating the expression of cell cycle-related molecules such as cyclin E1, CDK2 and p27 to arrest cell cycle transformation, which is independent of COX-2/PGE2 signaling pathway.
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Affiliation(s)
- Yan Yan
- Central Laboratory, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin 300041, PR China; Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin 300041, PR China
| | - Huiru Zou
- Central Laboratory, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin 300041, PR China
| | - Xiaoli Lian
- Central Laboratory, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin 300041, PR China; Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin 300041, PR China
| | - Li Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, PR China.
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Keni R, Gourishetti K, Kinra M, Nayak PG, Shenoy R, Nandakumar K, Jagdale RN, Raghavendra KV, Ahmed SM. Botrops derived hemocoagulase formulation a probable agent for diabetic wound healing. 3 Biotech 2020; 10:443. [PMID: 33014686 PMCID: PMC7501396 DOI: 10.1007/s13205-020-02429-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 09/05/2020] [Indexed: 12/02/2022] Open
Abstract
Botroclot is a marketed preparation containing hemocoagulase, which is an enzyme having coagulant activity, isolated from the snake Botrops atrox. This formulation is used in dental surgeries and other minor surgical wounds. However, the formulation remains untested in diabetic wounds. Hence, we proposed a study for the topical application of Botroclot in high-fat diet (HFD) + Streptozotocin (STZ) induced diabetic rats. HFD was fed initially to rats which facilitates the development of insulin resistance. Thereafter, an injection of STZ (40 mg/kg, i.p.) was given. This resulted in the development of diabetes with elevated fasting glucose and impaired glucose tolerance. After stabilization of blood glucose values, wounds were created by punch biopsy on the dorsal side of the palm of the rat to mimic the diabetic wounds frequently seen in the case of humans. Later, the application of Botroclot on these wounds was carried out for 15 days. Topical application of hemocoagulase improved the wound closure and there was a gradual decrease in inflammatory markers and a substantial increase in collagen deposition occurred. Histopathological findings indicated the same, with an increase in granulation tissue suggesting that the topical application moderately improves the wound healing in diabetic rats. We conclude that Botroclot can have a mild to moderate effect in improving collagen deposition and thus wound contraction, improving wound closure in diabetic wounds in rats. This study also establishes the basis for exploration of agents from venom-based sources in diabetic wound healing.
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Affiliation(s)
- Raghuvir Keni
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Karthik Gourishetti
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Manas Kinra
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Pawan G. Nayak
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Rekha Shenoy
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104 Karnataka India
| | - Rajesh N. Jagdale
- Juggat Pharma, Jagdale Industries Pvt. Ltd., Bengaluru, 560078 Karnataka India
| | - K. V. Raghavendra
- Juggat Pharma, Jagdale Industries Pvt. Ltd., Bengaluru, 560078 Karnataka India
| | - Syed Mushtaq Ahmed
- Juggat Pharma, Jagdale Industries Pvt. Ltd., Bengaluru, 560078 Karnataka India
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10
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Tribological Characteristics of Human Vascular Smooth Muscle Cells: The Implication of Disease State on Friction. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.biotri.2020.100122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Pretreatment of ovaries with collagenase before vitrification keeps the ovarian reserve by maintaining cell-cell adhesion integrity in ovarian follicles. Sci Rep 2020; 10:6841. [PMID: 32321979 PMCID: PMC7176664 DOI: 10.1038/s41598-020-63948-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 04/06/2020] [Indexed: 12/14/2022] Open
Abstract
The mammalian ovarian follicle is comprised of the germ cell or oocyte surrounded by the somatic cells, the granulosa and theca cells. The ovarian stroma, including the collagen-rich matrix that supports the three-dimensional disk-like follicular structure, impacts the integrity of the ovarian follicle and is essential for follicular development. Maintaining follicular integrity during cryopreservation has remained a limiting factor in preserving ovarian tissues for transplantation because a significant proportion of developed follicles in the frozen-thawed ovaries undergo atresia after transplantation. In this study, we show for the first time that during vitrification of the mouse ovary, the attachment of the oocyte to the granulosa cells was impaired by the loss of the cadherin adhesion molecules. Importantly, exposure to a high osmotic solution greatly decreased the ratio of oocyte diameter to the diameter of its follicle but did not alter the collagen-rich matrix surrounding the follicles. By treating ovaries briefly with collagenase before exposure to the hyper-osmotic solution the ratio of oocyte diameter to follicle diameter was maintained, and cadherin adhesion junctions were preserved. When frozen-thawed ovaries were transplanted to the bursa of recipient hosts, pretreatment with collagenase significantly increased serum levels of AMH, the number of intact follicles and the total number of viable offspring compared to frozen-thawed ovaries without collagenase pretreatment, even 6 months after transplantation. Thus, the collagenase pretreatment could provide a beneficial approach for maintaining the functions and viability of cryopreserved ovaries in other species and clinically relevant situations.
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12
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Li Q, Huang J, Zhang XY, Feng WW, Hua KQ. Dysmenorrhea in patients with adenomyosis: A clinical and demographic study. J Gynecol Obstet Hum Reprod 2020; 50:101761. [PMID: 32325268 DOI: 10.1016/j.jogoh.2020.101761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/12/2020] [Accepted: 04/14/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To identify the risk factors associated with dysmenorrhea in adenomyosis and to discuss the potential hormone-based understanding of pain mechanisms. STUDY DESIGN Adenomyosis patients with mild or no dysmenorrhea (n = 40, Group 1) and moderate-to-severe dysmenorrhea (n = 80, Group 2) were recruited. Charts of all patients were recorded. An immunohistochemistry (IHC) analysis was performed to detect the cellular levels of estrogen receptor-α (ER-α), estrogen receptor-β (ER-β), gonadotropin-releasing hormone receptor (GnRH-R), and neurofilaments (NFs) in 60 cases. RESULTS A history of cesarean section (CS) was positively related to the degree of dysmenorrhea in adenomyosis (OR (95 % CI): 4.397 (1.371-14.104)). The ER-α levels in the eutopic endometrium (EUE) of Group 2 were higher than those in the ectopic endometrium (ECE) of Group 1. Group 2 had higher NF levels in the ECE than in the EUE. CONCLUSION A history of CS is a risk factor for adenomyosis with moderate-to-severe dysmenorrhea. For patients with adenomyosis, high ER-α levels in the EUE and high NF levels in the ECE may be related to moderate-to-severe dysmenorrhea. These hormone-based mechanisms may contribute to our understanding of the pathogenesis of dysmenorrhea in adenomyosis.
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Affiliation(s)
- Qing Li
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, China
| | - Jian Huang
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, China
| | - Xu-Yin Zhang
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, China
| | - Wei-Wei Feng
- Department of Gynecology and Obstetrics, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Ke-Qin Hua
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, China; Shanghai Key Laboratory of Female Reproductive Endocrine-Related Disease, Fudan University, Shanghai, China.
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13
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Akerman AW, Blanding WM, Stroud RE, Nadeau EK, Mukherjee R, Ruddy JM, Zile MR, Ikonomidis JS, Jones JA. Elevated Wall Tension Leads to Reduced miR-133a in the Thoracic Aorta by Exosome Release. J Am Heart Assoc 2020; 8:e010332. [PMID: 30572760 PMCID: PMC6405702 DOI: 10.1161/jaha.118.010332] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background Reduced miR‐133a was previously found to be associated with thoracic aortic (TA) dilation, as seen in aneurysm disease. Because wall tension increases with vessel diameter (Law of Laplace), this study tested the hypothesis that elevated tension led to the reduction of miR‐133a in the TA. Methods and Results Elevated tension (1.5 g; 150 mm Hg) applied to murine TA ex vivo reduced miR‐133a tissue abundance compared with TA held at normotension (0.7 g; 70 mm Hg). Cellular miR‐133a levels were reduced with biaxial stretch of isolated murine TA fibroblasts, whereas smooth muscle cells were not affected. Mechanisms contributing to the loss of miR‐133a abundance were further investigated in TA fibroblasts. Biaxial stretch did not reduce primary miR‐133a transcription and had no effect on the expression/abundance of 3 microRNA‐specific exoribonucleases. Remarkably, biaxial stretch increased exosome secretion, and exosomes isolated from TA fibroblasts contained more miR‐133a. Inhibition of exosome secretion prevented the biaxial stretch‐induced reduction of miR‐133a. Subsequently, 2 in vivo models of hypertension were used to determine the effect of elevated wall tension on miR‐133a abundance in the TA: wild‐type mice with osmotic pump–mediated angiotensin II infusion and angiotensin II–independent spontaneously hypertensive mice. Interestingly, the abundance of miR‐133a was decreased in TA tissue and increased in the plasma in both models of hypertension compared with a normotensive control group. Furthermore, miR‐133a was elevated in the plasma of hypertensive human subjects, compared with normotensive patients. Conclusions Taken together, these results identified exosome secretion as a tension‐sensitive mechanism by which miR‐133a abundance was reduced in TA fibroblasts.
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Affiliation(s)
- Adam W Akerman
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,4 Cardiothoracic Surgery Research University of North Carolina at Chapel Hill NC
| | - Walker M Blanding
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Robert E Stroud
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Elizabeth K Nadeau
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC
| | - Rupak Mukherjee
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
| | - Jean Marie Ruddy
- 3 Division of Vascular Surgery Medical University of South Carolina Charleston SC
| | - Michael R Zile
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
| | - John S Ikonomidis
- 4 Cardiothoracic Surgery Research University of North Carolina at Chapel Hill NC
| | - Jeffrey A Jones
- 1 Division of Cardiothoracic Surgery Department of Surgery Medical University of South Carolina Charleston SC.,2 Research Service Ralph H. Johnson Veterans Affairs Medical Center Charleston SC
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14
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Logan SM, Ruest LB, Benson MD, Svoboda KKH. Extracellular Matrix in Secondary Palate Development. Anat Rec (Hoboken) 2019; 303:1543-1556. [PMID: 31513730 DOI: 10.1002/ar.24263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 05/14/2019] [Accepted: 07/03/2019] [Indexed: 12/11/2022]
Abstract
The secondary palate arises from outgrowths of epithelia-covered embryonic mesenchyme that grow from the maxillary prominence, remodel to meet over the tongue, and fuse at the midline. These events require the coordination of cell proliferation, migration, and gene expression, all of which take place in the context of the extracellular matrix (ECM). Palatal cells generate their ECM, and then stiffen, degrade, or otherwise modify its properties to achieve the required cell movement and organization during palatogenesis. The ECM, in turn, acts on the cells through their matrix receptors to change their gene expression and thus their phenotype. The number of ECM-related gene mutations that cause cleft palate in mice and humans is a testament to the crucial role the matrix plays in palate development and a reminder that understanding that role is vital to our progress in treating palate deformities. This article will review the known ECM constituents at each stage of palatogenesis, the mechanisms of tissue reorganization and cell migration through the palatal ECM, the reciprocal relationship between the ECM and gene expression, and human syndromes with cleft palate that arise from mutations of ECM proteins and their regulators. Anat Rec, 2019. © 2019 American Association for Anatomy.
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Affiliation(s)
- Shaun M Logan
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas
| | - L Bruno Ruest
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas
| | - M Douglas Benson
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas
| | - Kathy K H Svoboda
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, Texas
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15
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Chen Y, Lee K, Chen Y, Yang Y, Kawazoe N, Chen G. Preparation of Stepwise Adipogenesis-Mimicking ECM-Deposited PLGA–Collagen Hybrid Meshes and Their Influence on Adipogenic Differentiation of hMSCs. ACS Biomater Sci Eng 2019; 5:6099-6108. [DOI: 10.1021/acsbiomaterials.9b00866] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yazhou Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Kyubae Lee
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Ying Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Yingnan Yang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
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16
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The Psoriasis Therapeutic Potential of a Novel Short Laminin Peptide C16. Int J Mol Sci 2019; 20:ijms20133144. [PMID: 31252620 PMCID: PMC6651782 DOI: 10.3390/ijms20133144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 06/25/2019] [Indexed: 01/18/2023] Open
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by excessive growth of keratinocytes and hyperkeratosis in the epidermis. An abnormality of the non-lesional epidermis at an early stage of psoriasis is involved in triggering inflammatory cell infiltration into the dermis. Integrin α5β1 acts as a receptor for fibronectin and has been found to be overexpressed in non-lesional psoriatic epidermis. To investigate whether α5β1 integrin has a potential as a drug target for psoriasis treatment, the α5β1 integrin-binding peptide, C16, was used to obstruct the HaCat keratinocyte cellular responses induced by fibronectin (Fn) in culture and psoriasis-like skin inflammation induced in mice by imiquimod (IMQ). The C16 exhibited antagonistic activity against α5β1 integrin in HaCat cells, with evidence of suppression of the Fn-mediated proliferative, cytoskeletal, and inflammatory responses. Topical treatment with C16 greatly reduced the IMQ-induced epidermal hyperplasia, infiltration of neutrophils/macrophages, and expression of pro-inflammatory mediators in mouse skin. The C16SP (C16-derived short peptide; DITYVRLKF) also exhibited antagonistic activity, suppressing α5β1 integrin activity in culture, and reducing IMQ-induced skin inflammation. Taken together, this study provides the first evidence that α5β1 integrin may be a potential drug target for psoriasis. The synthetic C16 peptide may serve as an agent for psoriasis therapy.
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17
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Han GH, Peng J, Liu P, Ding X, Wei S, Lu S, Wang Y. Therapeutic strategies for peripheral nerve injury: decellularized nerve conduits and Schwann cell transplantation. Neural Regen Res 2019; 14:1343-1351. [PMID: 30964052 PMCID: PMC6524503 DOI: 10.4103/1673-5374.253511] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In recent years, the use of Schwann cell transplantation to repair peripheral nerve injury has attracted much attention. Animal-based studies show that the transplantation of Schwann cells in combination with nerve scaffolds promotes the repair of injured peripheral nerves. Autologous Schwann cell transplantation in humans has been reported recently. This article reviews current methods for removing the extracellular matrix and analyzes its composition and function. The development and secretory products of Schwann cells are also reviewed. The methods for the repair of peripheral nerve injuries that use myelin and Schwann cell transplantation are assessed. This survey of the literature data shows that using a decellularized nerve conduit combined with Schwann cells represents an effective strategy for the treatment of peripheral nerve injury. This analysis provides a comprehensive basis on which to make clinical decisions for the repair of peripheral nerve injury.
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Affiliation(s)
- Gong-Hai Han
- Kunming Medical University, Kunming, Yunnan Province; Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Jiang Peng
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Ping Liu
- Shanxi Medical University, Taiyuan, Shanxi Province, China
| | - Xiao Ding
- Shihezi University Medical College, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Shuai Wei
- Shihezi University Medical College, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Sheng Lu
- 920th Hospital of Joint Service Support Force, Kunming, Yunnan Province, China
| | - Yu Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
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18
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Richardson WJ, Kegerreis B, Thomopoulos S, Holmes JW. Potential strain-dependent mechanisms defining matrix alignment in healing tendons. Biomech Model Mechanobiol 2018; 17:1569-1580. [PMID: 30003433 DOI: 10.1007/s10237-018-1044-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/18/2018] [Indexed: 12/13/2022]
Abstract
Tendon mechanical function after injury and healing is largely determined by its underlying collagen structure, which in turn is dependent on the degree of mechanical loading experienced during healing. Experimental studies have shown seemingly conflicting outcomes: although collagen content steadily increases with increasing loads, collagen alignment peaks at an intermediate load. Herein, we explored potential collagen remodeling mechanisms that could give rise to this structural divergence in response to strain. We adapted an established agent-based model of collagen remodeling in order to simulate various strain-dependent cell and collagen interactions that govern long-term collagen content and fiber alignment. Our simulation results show two collagen remodeling mechanisms that give rise to divergent collagen content and alignment in healing tendons: (1) strain-induced collagen fiber damage in concert with increased rates of deposition at higher strains, or (2) strain-dependent rates of enzymatic degradation. These model predictions identify critical future experiments needed to isolate each mechanism's specific contribution to the structure of healing tendons.
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Affiliation(s)
- William J Richardson
- Department of Bioengineering, Clemson University, Clemson, SC, USA
- Institute for Biological Interfaces of Engineering, Clemson University, Clemson, SC, USA
| | - Brian Kegerreis
- Department of Biomedical Engineering, University of Virginia, Box 800759, Charlottesville, VA, 22908, USA
| | - Stavros Thomopoulos
- Department of Orthopedic Surgery, Columbia University, New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia, Box 800759, Charlottesville, VA, 22908, USA.
- Department of Medicine, University of Virginia, Charlottesville, VA, USA.
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA.
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19
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Xu M, Seas A, Kiyani M, Ji KSY, Bell HN. A temporal examination of calcium signaling in cancer- from tumorigenesis, to immune evasion, and metastasis. Cell Biosci 2018; 8:25. [PMID: 29636894 PMCID: PMC5883416 DOI: 10.1186/s13578-018-0223-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/26/2018] [Indexed: 12/16/2022] Open
Abstract
Background Although the study of calcium (Ca2+) is classically associated with excitable cells such as myocytes or neurons, the ubiquity of this essential element in all cellular processes has led to interest in other cell types. The importance of Ca2+ to apoptosis, cell signaling, and immune activation is of special import in cancer. Main Here we review the current understanding of Ca2+ in each of these processes vital to the initiation, spread, and drug resistance of malignancies. We describe the involvement of Ca2+, and Ca2+ related proteins in cell cycle checkpoints and Ca2+ dependent apoptosis and discuss their roles in cellular immortalization. The role of Ca2+ in inter-cellular communication is also discussed in relevance to tumor-stromal communication, angiogenesis, and tumor microinvasion. The role that Ca2+ plays in immune surveillance and evasion is also addressed. Finally, we discuss the possibility of targeting Ca2+ singling to address the most pressing topics of cancer treatment: metastatic disease and drug resistance. Conclusion This review discusses the current understanding of Ca2+ in cancer. By addressing Ca2+ facilitated angiogenesis, immune evasion, metastasis, and drug resistance, we anticipate future avenues for development of Ca2+ as a nexus of therapy.
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Affiliation(s)
- MengMeng Xu
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA.,2Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710 USA
| | - Andreas Seas
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA
| | - Musa Kiyani
- 3School of Medicine, Duke University Medical Center, Durham, NC 27710 USA.,4Duke-NUS Medical School, Singapore, 169857 Singapore
| | - Keven S Y Ji
- 3School of Medicine, Duke University Medical Center, Durham, NC 27710 USA
| | - Hannah N Bell
- 1Medical-Scientist Training Program, Duke University Medical Center, Durham, NC 27710 USA
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20
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Myer NM, Myers KA. CLASP1 regulates endothelial cell branching morphology and directed migration. Biol Open 2017; 6:1502-1515. [PMID: 28860131 PMCID: PMC5665473 DOI: 10.1242/bio.028571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Endothelial cell (EC) branching is critically dependent upon the dynamic nature of the microtubule (MT) cytoskeleton. Extracellular matrix (ECM) mechanosensing is a prominent mechanism by which cytoskeletal reorganization is achieved; yet how ECM-induced signaling is able to target cytoskeletal reorganization intracellularly to facilitate productive EC branching morphogenesis is not known. Here, we tested the hypothesis that the composition and density of the ECM drive the regulation of MT growth dynamics in ECs by targeting the MT stabilizing protein, cytoplasmic linker associated protein 1 (CLASP1). High-resolution fluorescent microscopy coupled with computational image analysis reveal that CLASP1 promotes slow MT growth on glass ECMs and promotes short-lived MT growth on high-density collagen-I and fibronectin ECMs. Within EC branches, engagement of either high-density collagen-I or high-density fibronectin ECMs results in reduced MT growth speeds, while CLASP1-dependent effects on MT dynamics promotes elevated numbers of short, branched protrusions that guide persistent and directed EC migration. Summary: CLASP1 modulates microtubule dynamics with sub-cellular specificity in response to extracellular matrix density and composition. CLASP1 effects on microtubules promote short, branched protrusions that guide persistent and directional EC migration. This article has an associated First Person interview with the first author of the paper as part of the supplementary information.
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Affiliation(s)
- Nicole M Myer
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia PA 19104, USA
| | - Kenneth A Myers
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia PA 19104, USA
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21
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Stolzenburg-Veeser L, Golubnitschaja O. Mini-encyclopaedia of the wound healing - Opportunities for integrating multi-omic approaches into medical practice. J Proteomics 2017; 188:71-84. [PMID: 28757465 DOI: 10.1016/j.jprot.2017.07.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/25/2017] [Accepted: 07/25/2017] [Indexed: 12/12/2022]
Abstract
Wound healing is a highly complex life-important repair process triggered by plenty of local and/or systemic organ and tissue damaging events, such as an acute surgical invasion, accidental organ and tissue damages, acute and chronic diseases, aggressive local and systemic therapeutic approaches (e.g. irradiation and systemic chemotherapy). Individual health condition determines over the quality of wound healing. Impaired wound healing, in turn, may lead, for example, to post-surgical complications frequently observed in elderly, chronic ulcers in diabetic patients, hindered and ineffective pain management, etc. However, these well-acknowledged examples are just the tip of the iceberg. The entire spectrum of potential consequences is much broader. Therefore, all the aspects of wound healing need to receive a dedicated attention of many specialised medical fields and healthcare as a whole. In contrast, there is still strongly limited knowledge collected regarding the molecular and cellular mechanisms underlying the physiological versus impaired wound healing. The contents of this article might be of great importance for multi-professional considerations as well as for the experts working in specific fields such as clinical proteomics, general practice, laboratory medicine, surgery including plastic surgery and aesthetic medicine, gerontology, psychology, diabetology, endocrinology, oncology, cardiovascular disease, radiology, and healthcare economy. SIGNIFICANCE The contents of this article are strongly motivated by the particular value of wound healing quality for medical care and might be of great importance for multi-professional considerations and experts working in specialised fields: predictive and preventive medicine, general practitioners, laboratory medicine, surgery including plastic surgery and aesthetic medicine, gerontology, psychology, diabetology, endocrinology, oncology, cardiovascular disease, radiology, and healthcare economy. The article is aiming at both educational and scientific purposes: on one side it summarises comprehensive information available regarding wound healing mechanisms and molecular pathways involved. On the other side the article provides highly innovative hypotheses for multi-professional considerations relevant for several research fields which may potentially advance medical services in the close future such as clinical proteomics and multi-omics.
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Affiliation(s)
| | - Olga Golubnitschaja
- Radiological Clinic, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany; Breast Cancer Research Centre, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany; Centre for Integrated Oncology, Cologne-Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany.
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22
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Razzak MA, Hossain MS, Radzi ZB, Yahya NAB, Czernuszka J, Rahman MT. Cellular and Molecular Responses to Mechanical Expansion of Tissue. Front Physiol 2016; 7:540. [PMID: 27899897 PMCID: PMC5111402 DOI: 10.3389/fphys.2016.00540] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/27/2016] [Indexed: 01/08/2023] Open
Abstract
The increased use of tissue expander in the past decades and its potential market values in near future give enough reasons to sum up the consequences of tissue expansion. Furthermore, the patients have the right to know underlying mechanisms of adaptation of inserted biomimetic, its bioinspired materials and probable complications. The mechanical strains during tissue expansion are related to several biological phenomena. Tissue remodeling during the expansion is highly regulated and depends on the signal transduction. Any alteration may lead to tumor formation, necrosis and/or apoptosis. In this review, stretch induced cell proliferation, apoptosis, the roles of growth factors, stretch induced ion channels, and roles of second messengers are organized. It is expected that readers from any background can understand and make a decision about tissue expansion.
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Affiliation(s)
- Muhammad Abdur Razzak
- Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya Kuala Lumpur, Malaysia
| | - Md Sanower Hossain
- Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya Kuala Lumpur, Malaysia
| | - Zamri Bin Radzi
- Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya Kuala Lumpur, Malaysia
| | - Noor Azlin B Yahya
- Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya Kuala Lumpur, Malaysia
| | - Jan Czernuszka
- Department of Materials, University of Oxford Oxford, UK
| | - Mohammad T Rahman
- Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya Kuala Lumpur, Malaysia
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