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Bardini R, Di Carlo S. Computational methods for biofabrication in tissue engineering and regenerative medicine - a literature review. Comput Struct Biotechnol J 2024; 23:601-616. [PMID: 38283852 PMCID: PMC10818159 DOI: 10.1016/j.csbj.2023.12.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/30/2024] Open
Abstract
This literature review rigorously examines the growing scientific interest in computational methods for Tissue Engineering and Regenerative Medicine biofabrication, a leading-edge area in biomedical innovation, emphasizing the need for accurate, multi-stage, and multi-component biofabrication process models. The paper presents a comprehensive bibliometric and contextual analysis, followed by a literature review, to shed light on the vast potential of computational methods in this domain. It reveals that most existing methods focus on single biofabrication process stages and components, and there is a significant gap in approaches that utilize accurate models encompassing both biological and technological aspects. This analysis underscores the indispensable role of these methods in understanding and effectively manipulating complex biological systems and the necessity for developing computational methods that span multiple stages and components. The review concludes that such comprehensive computational methods are essential for developing innovative and efficient Tissue Engineering and Regenerative Medicine biofabrication solutions, driving forward advancements in this dynamic and evolving field.
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Affiliation(s)
- Roberta Bardini
- Department of Control and Computer Engineering, Polytechnic University of Turin, Corso Duca Degli Abruzzi, 24, Turin, 10129, Italy
| | - Stefano Di Carlo
- Department of Control and Computer Engineering, Polytechnic University of Turin, Corso Duca Degli Abruzzi, 24, Turin, 10129, Italy
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Xu Y, Zhu SY, Li YM, Liu XX, Zhang H, Wang LF. Sharp needle reconstructs peripheral outflow for patients with malfunctional arteriovenous fistula. Ren Fail 2024; 46:2353351. [PMID: 38757707 PMCID: PMC11104691 DOI: 10.1080/0886022x.2024.2353351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 05/03/2024] [Indexed: 05/18/2024] Open
Abstract
OBJECTIVE To investigate the feasibility and efficacy of combining ultrasound-guided sharp needle technique with percutaneous transluminal angioplasty (PTA) for treating outflow stenosis or dysfunction in arteriovenous fistula (AVF) among hemodialysis patients. METHODS From October 2021 to March 2023, patients with occluded or malfunctional fistula veins not amenable to regularly angioplasty were retrospectively enrolled in the study. They underwent ultrasound-guided sharp needle intervention followed by PTA. Data on the location and length between the two veins, technical success, clinical outcomes, and complications were collected. Patency rates post-angioplasty were calculated through Kaplan-Meier analysis. RESULTS A total of 23 patients were included. The mean length of the reconstructed extraluminal segment was 3.18 cm. The sharp needle opening was performed on the basilic vein (60.9%), brachial vein (26.1%), or upper arm cephalic vein (13%) to create outflow channels. Postoperatively, all cases presented with mild subcutaneous hematomas around the tunneling site and minor diffuse bleeding. The immediate patency rate for the internal fistulas was 100%, with 3-month, 6-month, and 12-month patency rates at 91.3%, 78.3%, and 43.5%, respectively. CONCLUSION Sharp needle technology merged with PTA presents an effective and secure minimally invasive method for reconstructing the outflow tract, offering a new solution for recanalizing high-pressure or occluded fistulas.
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Affiliation(s)
- Yong Xu
- Department of Nephrology, The Third Xiangya Hospital, Hunan, China
| | - Shu-Yuan Zhu
- Department of Nephrology, Ningxiang People’s Hospital, Hunan, China
| | - Yuan-Ming Li
- Department of Nephrology, The Third Xiangya Hospital, Hunan, China
| | - Xin-Xin Liu
- Department of Nephrology, Changsha Jie-ao Hospital, Hunan, China
| | - Hao Zhang
- Department of Nephrology, The Third Xiangya Hospital, Hunan, China
| | - Lu-Fang Wang
- Department of Nephrology, The Third Xiangya Hospital, Hunan, China
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El-Sayed SE, Abdelaziz NA, El-Housseiny GS, Aboshanab KM. Nanosponge hydrogel of octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate of Alcaligenes faecalis. Appl Microbiol Biotechnol 2024; 108:100. [PMID: 38217256 PMCID: PMC10786974 DOI: 10.1007/s00253-023-12819-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/06/2023] [Accepted: 12/18/2023] [Indexed: 01/15/2024]
Abstract
Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate (ODHP) was extracted in a previous study from the culture broth of soil isolate Alcaligenes faecalis MT332429 and showed a promising antimycotic activity. This study was aimed to formulate ODHP loaded β-cyclodextrins (CD) nanosponge (NS) hydrogel (HG) to control skin fungal ailments since nanosponges augment the retention of tested agents in the skin. Box-Behnken design was used to produce the optimized NS formulation, where entrapment efficiency percent (EE%), polydispersity index (PDI), and particle size (PS) were assigned as dependent parameters, while the independent process parameters were polyvinyl alcohol % (w/v %), polymer-linker ratio, homogenization time, and speed. The carbopol 940 hydrogel was then created by incorporating the nanosponges. The hydrogel fit Higuchi's kinetic release model the best, according to in vitro drug release. Stability and photodegradation studies revealed that the NS-HG remained stable under tested conditions. The formulation also showed higher in vitro antifungal activity against Candida albicans compared to the control fluconazole. In vivo study showed that ODHP-NS-HG increased survival rates, wound contraction, and healing of wound gap and inhibited the inflammation process compared to the other control groups. The histopathological examinations and Masson's trichrome staining showed improved healing and higher records of collagen deposition. Moreover, the permeability of ODHP-NS-HG was higher through rats' skin by 1.5-folds compared to the control isoconazole 1%. Therefore, based on these results, NS-HG formulation is a potential carrier for enhanced and improved topical delivery of ODHP. Our study is a pioneering research on the development of a formulation for ODHP produced naturally from soil bacteria. KEY POINTS: • Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate was successfully formulated as a nanosponge hydrogel and statistically optimized. • The new formula exhibited in vitro good stability, drug release, and higher antifungal activity against C. albicans as compared to the fluconazole. • Ex vivo showed enhanced skin permeability, and in vivo analysis showed high antifungal activity as evidenced by measurement of various biochemical parameters and histopathological examination.
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Affiliation(s)
- Sayed E El-Sayed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Sixth of October City, Giza, 12451, Egypt
| | - Neveen A Abdelaziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Sixth of October City, Giza, 12451, Egypt
| | - Ghadir S El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Organization of African Unity St, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Khaled M Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Organization of African Unity St, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
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Zhu YH, Zhou CY, Peng X, Wang W, Liu Z, Xie R, Pan DW, Ju XJ, Chu LY. Dialdehyde starch cross-linked aminated gelatin sponges with excellent hemostatic performance and biocompatibility. Carbohydr Polym 2024; 342:122326. [PMID: 39048186 DOI: 10.1016/j.carbpol.2024.122326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/24/2024] [Accepted: 05/25/2024] [Indexed: 07/27/2024]
Abstract
Developing a hemostatic material suitable for rapid hemostasis remains a challenge. This study presents a novel aminated gelatin sponge cross-linked with dialdehyde starch, exhibiting excellent biocompatibility and hemostatic ability. This aminated gelatin sponge features hydrophilic surface and rich porous structure with a porosity of up to 80 %. The results show that the aminated gelatin sponges exhibit superior liquid absorption capacity and can absorb up to 30-50 times their own mass of simulated body fluid within 5 min. Compared with the commercial gelatin hemostatic sponge and non-aminated gelatin hemostatic sponge, the aminated gelatin hemostatic sponge can accelerate the hemostatic process through electrostatic interactions, demonstrating superior hemostatic performance in both in vitro and in vivo hemostasis tests. The aminated gelatin sponge can effectively control the hemostatic time within 80 s in the in vivo rat femoral artery injury model, significantly outperforming both commercial and non-aminated gelatin sponges. In addition, the aminated gelatin sponge also exhibits good biocompatibility and certain antibacterial properties. The proposed aminated gelatin sponge has very good application prospects for the management of massive hemorrhage.
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Affiliation(s)
- Yu-He Zhu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Chen-Yu Zhou
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xu Peng
- Experimental and Research Animal Institute, Sichuan University, Chengdu 610065, China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Da-Wei Pan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Shi J, Hao X, Yang H, He Z, Lu J, Li Y, Luan L, Zhang Q. A biguanide chitosan-based hydrogel adhesive accelerates the healing of bacterial-infected wounds. Carbohydr Polym 2024; 342:122397. [PMID: 39048234 DOI: 10.1016/j.carbpol.2024.122397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 07/27/2024]
Abstract
The development of tissue adhesives with good biocompatibility and potent antimicrobial properties is crucial for addressing the high incidence of surgical site infections in emergency and clinical settings. Herein, an injectable hydrogel adhesive composed of chitosan biguanidine (CSG), oxidized dextran (ODex) and tannin (TA) was synthesized primarily through Schiff-base reactions, hydrogen bonding, and electrostatic interactions. TA was introduced into the CSG/ODex hydrogel to prepare a physicochemically double cross-linked hydrogel. The hydrogel formulation incorporating 2 wt% TA (CSG/ODex-TA2) exhibited rapid gelation, moderate mechanical properties, good tissue adhesion, and sustained release behavior of TA. Both in vitro and in vivo studies demonstrated that CSG/ODex-TA2 showed significantly enhanced adhesion and antibacterial effectiveness compared to the CSG/ODex hydrogel and commercial fibrin glue. Leveraging the positive charge of CSG, the CSG/ODex-TA2 hydrogel demonstrated a strong contact antibacterial effect, while the sustained release of TA provided diffusion antibacterial capabilities. By integrating contact and diffusion antibacterial mechanisms into the hydrogel, a promising approach was developed to boost antibacterial efficiency and accelerate the healing of wounds infected with methicillin-resistant Staphylococcus aureus (MRSA). The CSG/ODex-TA2 hydrogel has excellent biocompatibility, hemostatic properties, and antibacterial capabilities, making it a promising candidate for improving in vivo wound care and combating bacterial infections.
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Affiliation(s)
- Junhao Shi
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xin Hao
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Hanyu Yang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Zhimin He
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Jiaju Lu
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Yunhui Li
- Department of Laboratory Medical Center, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang 110016, PR China
| | - Liang Luan
- Department of Laboratory Medical Center, General Hospital of Northern Theater Command, No. 83, Wenhua Road, Shenhe District, Shenyang 110016, PR China.
| | - Quan Zhang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
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Zhang Z, Zhang X, Li Y, Su W, Xu Q, Zhang S, Liang H, Ji C, Lin X. Effects of quercetin- and Lactiplantibacillus plantarum-containing bioactive films on physicochemical properties and microbial safety of grass carp. Food Chem 2024; 450:139472. [PMID: 38705103 DOI: 10.1016/j.foodchem.2024.139472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 05/07/2024]
Abstract
In this study, the electrospinning technique was used to co-encapsulate Quercetin (Qu) and Lactiplantibacillus plantarum 1-24-LJ in PVA-based nanofibers, and the effect of bioactive films on fish preservation was evaluated at the first time. The findings indicated that both Lpb. plantarum 1-24-LJ and Qu were successfully in the fibers, and co-loaded fibers considerably outperformed single-loaded fiber in terms of bacterial survival and antioxidant activity. Following fish preservation using the loaded fibers, significant reductions were observed in TVB-N, TBARS, and microbial complexity compared to the control group. Additionally, the co-loaded fibers more effectively reduced the counts of H2S-producing bacteria and Pseudomonas. In the future, fibers with both active substances and LAB hold promise as a novel approach for fish preservation.
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Affiliation(s)
- Zuoli Zhang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Construction Corps Key Laboratory of Deep Processing on Featured Agricultural Products in South Xinjiang, College of Food Science and Engineering, Tarim University, Alar 843300, Xinjiang, China
| | - Xianhao Zhang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Yao Li
- Liaoning Province Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Wentao Su
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Qian Xu
- Construction Corps Key Laboratory of Deep Processing on Featured Agricultural Products in South Xinjiang, College of Food Science and Engineering, Tarim University, Alar 843300, Xinjiang, China
| | - Sufang Zhang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Huipeng Liang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Institute of Technology, China Resources Beer (Holdings) Company Limited, Room 306 China Resources Building No.8 Jianguomen North Avenue, Dongcheng District, Beijing 100005, China
| | - Chaofan Ji
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Xinping Lin
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China.
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Wu Z, Sun K, Wang W, Xue Q, Tonin BSH, Watts DC, Fu J, Wang H. Characterization of dental light-curing resin composites incorporating multiple modified low-shrink monomers. Dent Mater 2024; 40:1244-1251. [PMID: 38871527 DOI: 10.1016/j.dental.2024.05.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/23/2024] [Accepted: 05/29/2024] [Indexed: 06/15/2024]
Abstract
OBJECTIVE Polymerization shrinkage poses a significant challenge in dental resin composites. The objective of this study is to introduce spiroorthocarbonate monomer 3,9-dimethylene-1,3,5,7-tetraoxa-spiro[5,5]undecane (BMSOC) and epoxy resin monomer 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate (ECHM-ECHC) into bisphenol-S-bis(3-methacrylato-2-hydroxy propyl)ether (BisS-GMA) based resin composites to develop composites with reduced shrinkage properties. METHODS BMSOC and BisS-GMA were synthesized and thoroughly mixed with ECHM-ECHC, followed by inorganic fillers and photoinitiators. Based on the composition of the resin matrix, five groups of experimental composites were prepared, with traditional bisphenol A-dimethacrylate glycidyl ester (Bis-GMA)/triethylene glycol dimethacrylate (TEGDMA) based composite serving as the control. The polymerization properties, including degree of conversion (DC) and polymerization shrinkage (PS), as well as marginal microleakage, wettability, flexural strength (FS), flexural modulus (FM), and biocompatibility were evaluated. RESULTS The results demonstrated that compared with the control group, the PS of BisS-GMA based composites containing BMSOC and ECHM-ECHC were significantly reduced (P < 0.05), and the lowest PS (0.96 ± 0.08 %) was observed when the ratio of BisS-GMA: (Epoxy + BMSOC) was 4:6. Additionally, the experimental composites also exhibited improved DC, minimal microleakage, low hydrophilicity, enhanced mechanical properties, qualified in vivo biocompatibility, and slight/moderate in vitro biocompatibility. SIGNIFICANCE The resin composites incorporating multiple modified low-shrink monomers are promising for dental applications to prevent various clinical problems caused by PS and extend restoration longevity.
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Affiliation(s)
- Zhongyuan Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ke Sun
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao 266000 Shandong, China; School of Stomatology, Qingdao University, Qingdao 266003, China
| | - Wenshun Wang
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao 266000 Shandong, China; School of Stomatology, Qingdao University, Qingdao 266003, China
| | - Qi Xue
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao 266000 Shandong, China; School of Stomatology, Qingdao University, Qingdao 266003, China
| | - Bruna S H Tonin
- Department of Restorative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirao Preto 14040904 SP, Brazil
| | - David C Watts
- University of Manchester, School of Medical Sciences, Oxford Road, M13 9PL Manchester, UK
| | - Jing Fu
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao 266000 Shandong, China; School of Stomatology, Qingdao University, Qingdao 266003, China.
| | - Hang Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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Zhan T, Song W, Jing G, Yuan Y, Kang N, Zhang Q. Zebrafish live imaging: a strong weapon in anticancer drug discovery and development. Clin Transl Oncol 2024; 26:1807-1835. [PMID: 38514602 DOI: 10.1007/s12094-024-03406-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 02/07/2024] [Indexed: 03/23/2024]
Abstract
Developing anticancer drugs is a complex and time-consuming process. The inability of current laboratory models to reflect important aspects of the tumor in vivo limits anticancer medication research. Zebrafish is a rapid, semi-automated in vivo screening platform that enables the use of non-invasive imaging methods to monitor morphology, survival, developmental status, response to drugs, locomotion, or other behaviors. Zebrafish models are widely used in drug discovery and development for anticancer drugs, especially in conjunction with live imaging techniques. Herein, we concentrated on the use of zebrafish live imaging in anticancer therapeutic research, including drug screening, efficacy assessment, toxicity assessment, and mechanism studies. Zebrafish live imaging techniques have been used in numerous studies, but this is the first time that these techniques have been comprehensively summarized and compared side by side. Finally, we discuss the hypothesis of Zebrafish Composite Model, which may provide future directions for zebrafish imaging in the field of cancer research.
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Affiliation(s)
- Tiancheng Zhan
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Wanqian Song
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Guo Jing
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Yongkang Yuan
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Ning Kang
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China.
| | - Qiang Zhang
- School of Medical Technology, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd, Jinghai District, Tianjin, 301617, People's Republic of China.
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Wiediartini, Ciptomulyono U, Dewi RS. Evaluation of physiological responses to mental workload in n-back and arithmetic tasks. ERGONOMICS 2024; 67:1121-1133. [PMID: 37970874 DOI: 10.1080/00140139.2023.2284677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 11/13/2023] [Indexed: 11/19/2023]
Abstract
Working memory tasks, such as n-back and arithmetic tasks, are frequently used in studying mental workload. The present study investigated and compared the sensitivity of several physiological measures at three levels of difficulty of n-back and arithmetic tasks. The results showed significant differences in fixation duration and pupil diameter among three task difficulty levels for both n-back and arithmetic tasks. Pupil diameters increase with increasing mental workload, whereas fixation duration decreases. Blink duration and heart rate (HR) were significantly increased as task difficulty increased in the n-back task, while root mean square of successive differences (RMSSD) and standard deviation of R-R intervals (SDNN) were significantly decreased in the arithmetic task. On the other hand, blink rate and Galvanic Skin Response (GSR) were not sensitive enough to assess the differences in task difficulty for both tasks. All significant physiological measures yielded significant differences between low and high task difficulty except for SDNN.Practitioner summary: This study aimed to assess the sensitivity levels of several physiological measures of mental workload in n-back and arithmetic tasks. It showed that pupil diameter was the most sensitive in both tasks. This study also found that most physiological indices are sensitive to an extreme change in task difficulty levels.
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Affiliation(s)
- Wiediartini
- Department of Industrial and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
- Safety and Health Engineering Study Program, Politeknik Perkapalan Negeri Surabaya, Surabaya, Indonesia
| | - Udisubakti Ciptomulyono
- Department of Industrial and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Ratna Sari Dewi
- Department of Industrial and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
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Brown NE, Ellerbe LR, Hollister SJ, Temenoff JS. Development and Characterization of Heparin-Containing Hydrogel/3D-Printed Scaffold Composites for Craniofacial Reconstruction. Ann Biomed Eng 2024; 52:2287-2307. [PMID: 38734845 DOI: 10.1007/s10439-024-03530-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Regeneration of cartilage and bone tissues remains challenging in tissue engineering due to their complex structures, and the need for both mechanical support and delivery of biological repair stimuli. Therefore, the goal of this study was to develop a composite scaffold platform for anatomic chondral and osteochondral repair using heparin-based hydrogels to deliver small molecules within 3D-printed porous scaffolds that provide structure, stiffness, and controlled biologic delivery. We designed a mold-injection system to combine hydrolytically degradable hydrogels and 3D-printed scaffolds that could be employed rapidly (< 30 min) in operating room settings (~23 °C). Micro-CT analysis demonstrated the effectiveness of our injection system through homogeneously distributed hydrogel within the pores of the scaffolds. Hydrogels and composite scaffolds exhibited efficient loading (~94%) of a small positively charged heparin-binding molecule (crystal violet) with sustained release over 14 days and showed high viability of encapsulated porcine chondrocytes over 7 days. Compression testing demonstrated nonlinear viscoelastic behavior where tangent stiffness decreased with scaffold porosity (porous scaffold tangent stiffness: 70%: 4.9 MPa, 80%: 1.5 MPa, and 90%: 0.20 MPa) but relaxation was not affected. Lower-porosity scaffolds (70%) showed stiffness similar to lower ranges of trabecular bone (4-8 MPa) while higher-porosity scaffolds (80% and 90%) showed stiffness similar to auricular cartilage (0.16-2 MPa). Ultimately, this rapid composite scaffold fabrication method may be employed in the operating room and utilized to control biologic delivery within load-bearing scaffolds.
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Affiliation(s)
- Nettie E Brown
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA
| | - Lela R Ellerbe
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA
| | - Scott J Hollister
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA.
| | - Johnna S Temenoff
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA.
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr, Atlanta, GA, 30332, USA.
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Angelini L, Paparella G, Bologna M. Distinguishing essential tremor from Parkinson's disease: clinical and experimental tools. Expert Rev Neurother 2024; 24:799-814. [PMID: 39016323 DOI: 10.1080/14737175.2024.2372339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 06/20/2024] [Indexed: 07/18/2024]
Abstract
INTRODUCTION Essential tremor (ET) and Parkinson's disease (PD) are the most common causes of tremor and the most prevalent movement disorders, with overlapping clinical features that can lead to diagnostic challenges, especially in the early stages. AREAS COVERED In the present paper, the authors review the clinical and experimental studies and emphasized the major aspects to differentiate between ET and PD, with particular attention to cardinal phenomenological features of these two conditions. Ancillary and experimental techniques, including neurophysiology, neuroimaging, fluid biomarker evaluation, and innovative methods, are also discussed for their role in differential diagnosis between ET and PD. Special attention is given to investigations and tools applicable in the early stages of the diseases, when the differential diagnosis between the two conditions is more challenging. Furthermore, the authors discuss knowledge gaps and unsolved issues in the field. EXPERT OPINION Distinguishing ET and PD is crucial for prognostic purposes and appropriate treatment. Additionally, accurate diagnosis is critical for optimizing clinical and experimental research on pathophysiology and innovative therapies. In a few years, integrated technologies could enable accurate, reliable diagnosis from early disease stages or prodromal stages in at-risk populations, but further research combining different techniques is needed.
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Affiliation(s)
| | - Giulia Paparella
- IRCCS Neuromed, Pozzilli, (IS), Italy
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Matteo Bologna
- IRCCS Neuromed, Pozzilli, (IS), Italy
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
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12
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Afzal F, Alhadhrami A, Ibrahim MM, El-Bahy ZM, Rahman AU. Rare-earth (Eu 3+) substitution impact on the structural, morphological, magneto-dielectric, and electrochemical properties of Cd 0.45Co 0.55Fe 2-yEu yO 4spinel nanoferrites. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:425805. [PMID: 38996421 DOI: 10.1088/1361-648x/ad62d0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 07/12/2024] [Indexed: 07/14/2024]
Abstract
A series ofCd0.45Co0.55Fe2-yEuyO4(y= 0.0, 0.1, 0.2, 0.3) spinel nanoferrites (SNFs) were synthesized using a self-igniting process and employed as electrode materials for supercapacitor applications. The results demonstrated the formation of a single SNFs phase, as shown by the XRD data. The crystallite size lies between the range of 29.30-51.12 nm. The porosity percentage is within the range of 31.37%-32.99%. Rietveld refinement of XRD and Raman analysis revealed the pure spinel phase and no secondary phase was observed. The saturation magnetization and magnetic anisotropy were also decreased with the addition of Eu3+in Cd-Co SNFs. The high coercive field was enhanced for Eu3+doping as compared to pure Cd-Co SNFs. The dielectric constant was improved with the substitution of Eu3+in Cd-Co SNFs. The dielectric tangent loss was reduced with the doping of Eu3+. The electrochemical performance of the Eu3+doped Cd-Co SNFs achieved an impressive maximum specific capacitance at a lower scan rate. Based on these findings, the outstanding electrochemical performance of the Eu3+doped Cd-Co SNFs suggests their potential as promising materials for high-frequency, magnetic ferrofluid, and supercapacitor electrodes.
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Affiliation(s)
- F Afzal
- Department of Physics, University of Central Punjab, Avenue 1, Khayaban-e-Jinnah, Road, Johar Town, Lahore 54590, Punjab, Pakistan
| | - A Alhadhrami
- Department of Chemistry, College of Science, Taif University, PO Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed M Ibrahim
- Department of Chemistry, College of Science, Taif University, PO Box 11099, Taif 21944, Saudi Arabia
| | - Zeinhom M El-Bahy
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt
| | - A U Rahman
- Department of Physics, University of Central Punjab, Avenue 1, Khayaban-e-Jinnah, Road, Johar Town, Lahore 54590, Punjab, Pakistan
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13
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Su TJ, Lin CHJ, Liu YL, Hsueh HW, Hsieh ST, Chao CC, Chiang MC. Altered connectivity of central autonomic network: effects of dysautonomia in hereditary transthyretin amyloidosis with polyneuropathy. Amyloid 2024:1-9. [PMID: 39044725 DOI: 10.1080/13506129.2024.2383450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/23/2024] [Accepted: 07/17/2024] [Indexed: 07/25/2024]
Abstract
BACKGROUND Hereditary transthyretin amyloidosis with polyneuropathy (ATTRv-PN) is a progressive fatal disorder caused by deposition of mutant transthyretin (TTR) amyloids mainly in the nerves and heart. Autonomic dysfunction is a major disabling manifestation, affecting 90% of patients with late-onset ATTRv-PN. The current study aimed to investigate brain functional alterations associated with dysautonomia due to peripheral autonomic nerve degeneration in ATTRv-PN. METHODS Resting-state functional MRI data were acquired from 43 ATTRv-PN patients predominantly of A97S (p.A117S) genotype, and the functional connectivity of central autonomic regions was assessed. RESULTS Compared with age-matched healthy controls, the ATTRv-PN patients exhibited (1) reduced functional connectivity of the central autonomic regions such as hypothalamus, amygdala, anterior insula, and middle cingulate cortex with brain areas of the limbic, frontal, and somatosensory systems, and (2) correlations of reduced functional autonomic connectivity with the severity of autonomic dysfunction especially orthostatic intolerance, decreased heart rate variability, and greater clinical disability. CONCLUSIONS Our findings provide evidence linking peripheral autonomic dysfunction with altered connectivity in the central autonomic network in ATTRv-PN.
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Affiliation(s)
- Tsai-Jou Su
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chien-Ho Janice Lin
- Department of Physical Therapy and Assistive Technology, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Yeong-An Orthopedic and Physical Therapy Clinic, Taipei, Taiwan
| | - Yen-Lin Liu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Hsueh-Wen Hsueh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Sung-Tsang Hsieh
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Anatomy and Cell Biology, National Taiwan University College of Medicine, Taipei, Taiwan
- Center of Precision Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chi-Chao Chao
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Chang Chiang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan
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14
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Li Y, Zhang Q, Yu N, Peng L, Gao Q, Li L, Zhao J, Yang J. Characterization and Dissolution Mechanism of Low-Molecular-Weight Organic Acids or Inorganic Mesoporous Particle-Based Piperine Amorphous Solid Dispersions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14941-14952. [PMID: 38980061 DOI: 10.1021/acs.langmuir.4c01001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
The objective of the current study is to prepare amorphous solid dispersions (ASDs) containing piperine (PIP) by utilizing organic acid glycyrrhizic acid (GA) and inorganic disordered mesoporous silica 244FP (MSN/244FP) as carriers and to investigate their dissolution mechanism. The physicochemical properties of ASDs were characterized with scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), and differential scanning calorimetry (DSC). Fourier transform infrared spectroscopy (FTIR) and one-dimensional proton nuclear magnetic resonance (1H NMR) studies collectively proved that strong hydrogen-bonding interactions formed between PIP and the carriers in ASDs. Additionally, molecular dynamic (MD) simulation was conducted to simulate and predict the physical stability and dissolution mechanisms of the ASDs. Interestingly, it revealed a significant increase in the dissolution of amorphous PIP in ASDs in in vitro dissolution studies. Rapid dissolution of GA in pH 6.8 medium resulted in the immediate release of PIP drugs into a supersaturated state, acting as a dissolution-control mechanism. This exhibited a high degree of fitting with the pseudo-second-order dynamic model, with an R2 value of 0.9996. Conversely, the silanol groups on the outer surface of the MSN and its porous nanostructures enabled PIP to display a unique two-step drug release curve, indicating a diffusion-controlled mechanism. This curve conformed to the Ritger-Peppas model, with an R2 > 0.9. The results obtained provide a clear evidence of the proposed transition of dissolution mechanism within the same ASD system, induced by changes in the properties of carriers in a solution medium of varying pH levels.
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Affiliation(s)
- Ye Li
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
- Shaanxi Chinese Medicine Institute (Shaanxi Pharmaceutical Information Center), No.16 Biyuan West Road, Xianyang 712000, P. R. China
| | - Qian Zhang
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
| | - Na Yu
- Department of Preparation Center, General Hospital of Ningxia Medical University, No.804 Shengli South Street ,Yinchuan 750004, P. R. China
| | - Liting Peng
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
| | - Qi Gao
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
| | - Li Li
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
| | - Jianjun Zhao
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
| | - Jianhong Yang
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, No.1160 Shengli South Street, Yinchuan 750004, P. R. China
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Long H, Zhang H, Deng L, Li C, Zhu Y, Ling S, Li D, Zhou X, Liu H, Zhong Z, Peng G, Wang C, Zhou Z. Biomechanics of Dental Implantation in the Giant Panda ( Ailuropoda melanoleuca): A Comparative Study Using Finite Element Analysis. J Vet Dent 2024:8987564241265420. [PMID: 39042890 DOI: 10.1177/08987564241265420] [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: 07/25/2024]
Abstract
Giant pandas have a high incidence of tooth wear, loss, and fracture since their diet is specifically bamboo. Dental implantation is a common treatment for tooth loss in humans while rarely reported in wild animals. To explore the applicability of dental implantation in giant pandas, this study measured mandible parameters of the giant panda, from an adult skeletal specimen. The mandible bone block model was developed using computer-aided design 3D mechanical drawing software. Implants of different radius and thread types of the third premolar tooth (PM3) were assembled and imported into an analysis software system for finite element analysis. As a result, the reverse buttress implant with a radius of 7.5 mm and 8.3 mm, and a length of 15 mm was found to be the most suitable implant for use in the giant panda PM3. This study provides a reference for appropriate clinical giant panda dental implantation, although, the feasibility of giant panda dental implantation needs to be studied further.
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Affiliation(s)
- Han Long
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Huimin Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Linhua Deng
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Caiwu Li
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Yan Zhu
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Shanshan Ling
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Desheng Li
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Xiaoxiao Zhou
- Chengdu Center for Animal Disease Prevention and Control, Chengdu, Sichuan, China
| | - Haifeng Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhijun Zhong
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Guangneng Peng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Chengdong Wang
- China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
| | - Ziyao Zhou
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Sichuan Agricultural University, Chengdu, Sichuan, China
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Maher N, Mahmood A, Fareed MA, Kumar N, Rokaya D, Zafar MS. An updated review and recent advancements in carbon-based bioactive coatings for dental implant applications. J Adv Res 2024:S2090-1232(24)00300-X. [PMID: 39033875 DOI: 10.1016/j.jare.2024.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 07/11/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND Surface coating of dental implants with a bioactive biomaterial is one of the distinguished approaches to improve the osseointegration potential, antibacterial properties, durability, and clinical success rate of dental implants. Carbon-based bioactive coatings, a unique class of biomaterial that possesses excellent mechanical properties, high chemical and thermal stability, osteoconductivity, corrosion resistance, and biocompatibility, have been utilized successfully for this purpose. AIM This review aims to present a comprehensive overview of the structure, properties, coating techniques, and application of the various carbon-based coatings for dental implant applicationswith a particular focuson Carbon-based nanomaterial (CNMs), which is an advanced class of biomaterials. KEY SCIENTIFIC CONCEPTS OF REVIEW Available articles on carbon coatings for dental implants were reviewed using PubMed, Science Direct, and Google Scholar resources. Carbon-based coatings are non-cytotoxic, highly biocompatible, chemically inert, and osteoconductive, which allows the bone cells to come into close contact with the implant surface and prevents bacterial attachment and growth. Current research and advancements are now more focused on carbon-based nanomaterial (CNMs), as this emerging class of biomaterial possesses the advantage of both nanotechnology and carbon and aligns closely with ideal coating material characteristics. Carbon nanotubes, graphene, and its derivatives have received the most attention for dental implant coating. Various coating techniques are available for carbon-based materials, chosen according to substrate type, application requirements, and desired coating thickness. Vapor deposition technique, plasma spraying, laser deposition, and thermal spraying techniques are most commonly employed to coat the carbon structures on the implant surface. Longer duration trials and monitoring are required to ascertain the role of carbon-based bioactive coating for dental implant applications.
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Affiliation(s)
- Nazrah Maher
- Department of Science of Dental Materials, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Anum Mahmood
- Department of Science of Dental Materials, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Muhammad Amber Fareed
- Clinical Sciences Department College of Dentistry Ajman University, Ajman, United Arab Emirates; Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, 346, United Arab Emirates.
| | - Naresh Kumar
- Department of Science of Dental Materials, Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Dinesh Rokaya
- Department of Prosthodontics, Faculty of Dentistry, Zarqa University, Zarqa 13110, Jordan
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madina Al Munawwarrah 41311, Saudi Arabia; Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, 346, United Arab Emirates; School of Dentistry, University of Jordan, Amman 11942, Jordan; Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan.
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Romero-Flores CF, Bustamante-Bello R, Moya Bencomo M, Martinez-Ríos EA, Montesinos L. Optical Marker-Based Motion Capture of the Human Spine: A Scoping Review of Study Design and Outcomes. Ann Biomed Eng 2024:10.1007/s10439-024-03567-0. [PMID: 39023832 DOI: 10.1007/s10439-024-03567-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 06/19/2024] [Indexed: 07/20/2024]
Abstract
Biomechanical analysis of the human spine is crucial to understanding injury patterns. Motion capture technology has gained attention due to its non-invasive nature. Nevertheless, traditional motion capture studies consider the spine a single rigid segment, although its alignment changes during movement. Moreover, guidelines that indicate where markers should be placed for a specific exercise do not exist. This study aims to review the methods used to assess spine biomechanics using motion capture systems to determine the marker sets used, the protocols used, the resulting parameters, the analysed activities, and the characteristics of the studied populations. PRISMA guidelines were used to perform a Scoping Review using SCOPUS and Web of Science databases. Fifty-six journal and conference articles from 1997 to 2023 were considered for the analysis. This review showed that Plug-in-Gait is the most used marker set. The lumbar spine is the segment that generates the most interest because of its high mobility and function as a weight supporter. Furthermore, angular position and velocity are the most common outcomes when studying the spine. Walking, standing, and range of movement were the most studied activities compared to sports and work-related activities. Male and female participants were recruited similarly across all included articles. This review presents the motion capture techniques and measurement outcomes of biomechanical studies of the human spine, to help standardize the field. This work also discusses trends in marker sets, study outcomes, studied segments and segmentation approaches.
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Affiliation(s)
- Claudia F Romero-Flores
- Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., México, 64849
| | - Rogelio Bustamante-Bello
- Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., México, 64849
| | - Marcos Moya Bencomo
- Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., México, 64849.
| | - Erick Axel Martinez-Ríos
- Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., México, 64849
| | - Luis Montesinos
- Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., México, 64849
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Gözaçan Karabulut D, Numanoğlu Akbaş A. The effect of horse riding simulator on upper extremity skills, trunk control and functionality in cerebral palsy: a randomized controlled trial. Disabil Rehabil 2024:1-8. [PMID: 39022889 DOI: 10.1080/09638288.2024.2380785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024]
Abstract
PURPOSE The aim of this study was to investigate the effect of horse riding simulator on upper extremity skills, trunk control and functionality in cerebral palsy (CP). MATERIALS AND METHODS This randomized controlled trial included total 32 CP, 16 in horse riding simulator group (HRSG) and 16 in control group (CG). ABILHAND-Kids, Jebsen-Taylor Hand Function Test (JTHFT), Gross Motor Function Measurement-sitting dimension (GMFM-B), Trunk Control Measurement Scale (TCMS), Pediatric Evaluation of Disability Inventory (PEDI) were evaluated before and after procedure. RESULTS It was observed that there were improvements in both groups for ABILHAND-Kids scores after intervention, but the change in HRSG was significantly higher (p < 0.001). For all parameters of JTHFT (except writing dominant, non-dominant, turning cards-dominant), there was a significant difference between groups in favor of HRSG (p < 0.001-0.002). There was no change in GMFM-B values with intervention for both groups (p > 0.05). There were significant changes in favor of HRSG group in terms TCMS-Total (p = 0.003). There were significant changes in HRSG compared to CG for PEDI (pPEDI-Self-care<0.001, pPEDI-Mobility<0.001, pPEDI-Social function=0.016, respectively). CONCLUSIONS It has been found that HRS in addition to conventional physiotherapy have positive effects on upper extremity skills, trunk control and functional abilities in daily life in the rehabilitation process of CP.The study protocol is registered on ClinicalTrials.gov (Identifier: NCT05518370).
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Affiliation(s)
- Demet Gözaçan Karabulut
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Gaziantep Islam Science and Technology University, Gaziantep, Turkey
| | - Ayşe Numanoğlu Akbaş
- Department of Physical Therapy and Rehabilitation, Faculty of Health Sciences, Sivas Cumhuriyet University, Sivas, Turkey
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Balıkesir University, Balıkesir, Turkey
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Munhoz LLDS, Guillens LC, Alves BC, do Nascimento MGOF, Meneguin AB, Carbinatto FM, Arruda G, Barud HDS, de Aro A, Casagrande LDR, Silveira PCL, Andrade TAM, dos Santos GMT, Caetano GF. Bacterial nanocellulose/calcium alginate hydrogel for the treatment of burns. Acta Cir Bras 2024; 39:e393324. [PMID: 39016358 PMCID: PMC11249442 DOI: 10.1590/acb393324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/04/2024] [Indexed: 07/18/2024] Open
Abstract
PURPOSE Bacterial cellulose (BC) has shown high capacity for the treatment of wounds and burns, providing a moisty environment. Calcium alginate can be associated with BC to create gels that aid in wound debridement and contribute to appropriate wound healing. This study is aimed at characterizing and evaluating the use of bacterial cellulose/alginate gel in skin burns in rats. METHODS Cellulose and cellulose/alginate gels were compared regarding the capacity of liquid absorption, moisture, viscosity, and potential cytotoxicity. The 2nd degree burns were produced using an aluminum metal plate (2.0cm) at 120ºC for 20s on the back of rats. The animals were divided into non-treated, CMC(Carboxymethylcellulose), Cellulose(CMC with bacterial cellulose), and Cellulose/alginate(CMC with bacterial cellulose and alginate). The animals received topical treatment 3 times/week. Biochemical (MPO, NAG and oxidative stress), histomorphometry and immunohistochemical assays (IL-1β IL-10 and VEGF) were conducted on the 14th, 21st, 28th, and 35th days. RESULTS Cellulose/Alginate gel showed higher absorption capacity and viscosity compared to Cellulose gel, with no cytotoxic effects. Cellulose/alginate presented lower MPO values, a higher percentage of IL-10, with greater and balanced oxidative stress profile. CONCLUSIONS The use of cellulose/alginate gel reduced neutrophils and macrophage activation and showed greater anti-inflammatory response, which can contribute to healing chronic wounds and burns.
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Affiliation(s)
| | - Luiz Carlos Guillens
- Centro Universitário Herminio Ometto de Araras – Graduate Program in Biomedical Sciences, Araras (SP), Brazil
| | - Beatriz Candido Alves
- Centro Universitário Herminio Ometto de Araras – Graduate Program in Biomedical Sciences, Araras (SP), Brazil
| | | | | | - Fernanda Mansano Carbinatto
- Universidade de Araraquara – BioPolymer and Biomaterial Laboratory, Araraquara (SP), Brazil
- Universidade de São Paulo – Institute of Physics, São Carlos (SP), Brasil
| | - Gabriela Arruda
- Universidade de Araraquara – BioPolymer and Biomaterial Laboratory, Araraquara (SP), Brazil
| | - Hernane da Silva Barud
- Universidade de Araraquara – BioPolymer and Biomaterial Laboratory, Araraquara (SP), Brazil
- Universidade de São Paulo – Institute of Physics, São Carlos (SP), Brasil
| | - Andrea de Aro
- Centro Universitário Herminio Ometto de Araras – Graduate Program in Biomedical Sciences, Araras (SP), Brazil
| | - Laura de Roch Casagrande
- Universidade do Extremo Sul Catarinense – Graduate Program in Science of Health – Criciúma (SC), Brazil
| | - Paulo Cesar Lock Silveira
- Universidade do Extremo Sul Catarinense – Graduate Program in Science of Health – Criciúma (SC), Brazil
| | | | | | - Guilherme Ferreira Caetano
- Centro Universitário Herminio Ometto de Araras – Graduate Program in Biomedical Sciences, Araras (SP), Brazil
- Centro Universitário Herminio Ometto de Araras – Graduate Program of Orthodontics, Araras (SP), Brazil
- Universidade de São Paulo – Ribeirão Preto Medical School, Ribeirão Preto (SP), Brazil
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Tong D, Gobert S, Reuzeau A, Farges JC, Leveque M, Bolon M, Costantini A, Pasdeloup M, Lafont J, Ducret M, Bekhouche M. Dental pulp mesenchymal stem cells-response to fibrin hydrogel reveals ITGA2 and MMPs expression. Heliyon 2024; 10:e32891. [PMID: 39027533 PMCID: PMC11255596 DOI: 10.1016/j.heliyon.2024.e32891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 07/20/2024] Open
Abstract
Regenerative endodontic procedures (REP) aim at reestablishing tooth vitality by replacing the irreversibly damaged dental pulp removed by the dental practitioner with a new functional one. The current treatment of advanced caries relies on the replacement of the inflamed or necrosed dental pulp with an inert filling material. This leads to a functional but non-vital tooth, which lacks the ability to sense dental tissue damage, and to protect from further bacterial attack. Therapeutic strategies inspired by tissue engineering called REP propose to regenerate a fully functional dental pulp directly in the canal space. Promising results were obtained using dental pulp mesenchymal stem cells (DP-MSCs) in combination with bio-inspired artificial and temporary 3D hydrogels made of extracellular matrix molecules such as collagen and fibrin biomacromolecules. However, the uncontrolled mechanisms of DP regeneration from DP-MSCs in 3D biomacromolecules fail to regenerate a fully functional DP and can induce fibrotic scarring or mineralized tissue formation to a non-negligible extent. The lack of knowledge regarding the early molecular mechanisms initiated by DP-MSCs seeded in ECM-made hydrogels is a scientific lock for REP. In this study, we investigated the early DP-MSC-response in a 3D fibrin hydrogel. DP-MSCs isolated from human third molars were cultured for 24 h in the fibrin hydrogel. The differential transcript levels of extracellular and cell surface genes were screened with 84-gene PCR array. Out of the 84 genes screened, 9 were found to be overexpressed, including those coding for the integrin alpha 2 subunit, the collagenase MMP1 and stromelysins MMP3, MMP10 and MMP12. Over-expression of ITGA2 was confirmed by RT-qPCR. The expression of alpha 2 integrin subunit protein was assessed over time by immunoblot and immunofluorescence staining. The increase in the transcript level of MMP1, MMP3, MM10 and MMP12 was confirmed by RT-qPCR. The overexpression of MMP1 and 3 at the protein level was assessed by immunoblot. MMP3 expression by DP-MSCs was observed by immunofluorescence staining. This work demonstrates overexpression of ITGA2 and of MMP1, 3, 10 and 12 by DP-MSCs cultured in a fibrin hydrogel. The main preliminary extracellular and cell surface response of the DP-MSCs to fibrin hydrogel seems to rely on a ITGA2/MMP3 axis. Further investigations are needed to precisely decipher the role of this axis in dental pulp tissue building. Nevertheless, this work identifies extracellular and cell surface molecules that could be potential checkpoints to be targeted to guide proper dental pulp tissue regeneration.
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Affiliation(s)
- David Tong
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Stéphanie Gobert
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Alicia Reuzeau
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Jean-Christophe Farges
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Odontology Faculty of Lyon, University Lyon 1, France
- Hospices Civils de Lyon, France
| | - Marianne Leveque
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Marie Bolon
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Arthur Costantini
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Hospices Civils de Lyon, France
| | - Marielle Pasdeloup
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Jérôme Lafont
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
| | - Maxime Ducret
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
- Odontology Faculty of Lyon, University Lyon 1, France
| | - Mourad Bekhouche
- LBTI - Tissue Biology and Therapeutic Engineering Laboratory, UMR5305, CNRS/Université, Claude Bernard Lyon 1, France
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Sharma P, Kumari P, Sharma M, Sharma R, Paliwal A, Srivastava S, Ashique S, Bhowmick M, Adnan M, Mir RH. Therapeutic potential of Aloe vera-coated curcumin encapsulated nanoparticles in an Alzheimer-induced mice model: behavioural, biochemical and histopathological evidence. J Microencapsul 2024:1-16. [PMID: 39007845 DOI: 10.1080/02652048.2024.2373715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 06/20/2024] [Indexed: 07/16/2024]
Abstract
OBJECTIVE The main purpose of the present study was to evaluate the therapeutic efficacy of Aloe vera-coated curcumin encapsulated nanoparticles in mitigating Alzheimer's disease progression in mice, by examining behavioural changes, biochemical markers, and histopathological alterations, thus elucidating its potential as a treatment strategy. METHODS The green synthesis method was used to synthesise this nanoformulation, which was then characterised using a variety of techniques, including percentage encapsulation efficacy, UV-visible spectroscopy, DLS, FT-IR, FESEM, and EDX. Several in-vivo assessments, including behavioural evaluations, dose optimisation studies, oxidative stress marker estimation, and histological studies, were conducted to determine the potential therapeutic impact of nanoformulation on the Alzheimer-induced mice model. RESULTS The synthesised nanoparticles show a mean diameter of 76.12 nm ±1.23, a PDI of 0.313 ± 0.02, a zeta potential of 6.27 ± 0.65 mV, and the percentage encapsulation efficiency between 90% and 95% indicating good stability of synthesised nanoformulation. With the help of Morris water maze, Y-maze, and novel object recognition assay, the learning capacity and memory were assessed, and the results show that the synthesised nanoformulation significantly decreased the transfer latency to reach baited arm or to the hidden platform within 7 days. CONCLUSION The formulation demonstrated significant biochemical benefits and remarkable cognitive advantages, establishing it as a prospective therapeutic intervention option that is both safe and effective.
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Affiliation(s)
- Preeti Sharma
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Jaipur, Rajasthan, India
| | - Pooja Kumari
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Jaipur, Rajasthan, India
| | - Mansi Sharma
- Department of Chemistry, Banasthali Vidyapith, Jaipur, Rajasthan, India
| | - Rekha Sharma
- Department of Chemistry, Banasthali Vidyapith, Jaipur, Rajasthan, India
| | - Ajita Paliwal
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Shriyansh Srivastava
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
- Department of Pharmacology, Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, India
| | - Sumel Ashique
- Department of Pharmaceutical Sciences, Bengal College of Pharmaceutical Sciences and Research, Durgapur, West Bengal, India
| | - Mithun Bhowmick
- Department of Pharmaceutical Sciences, Bengal College of Pharmaceutical Sciences and Research, Durgapur, West Bengal, India
| | - Mohd Adnan
- Department of Biology, College of Science, University of Ha'il, Ha'il, Saudi Arabia
| | - Reyaz Hassan Mir
- Division of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, University of Kashmir, Srinagar, Jammu and Kashmir, India
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22
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Chu R, Wei J, Lu W, Dong C, Chen Y. MFS-DBF: A trustworthy multichannel feature sieve and decision boundary formulation system for Obstructive Sleep Apnea detection. Comput Biol Med 2024; 179:108842. [PMID: 38996552 DOI: 10.1016/j.compbiomed.2024.108842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/15/2024] [Accepted: 06/04/2024] [Indexed: 07/14/2024]
Abstract
The fine identification of sleep apnea events is instrumental in Obstructive Sleep Apnea (OSA) diagnosis. The development of sleep apnea event detection algorithms based on polysomnography is becoming a research hotspot in medical signal processing. In this paper, we propose an Inverse-Projection based Visualization System (IPVS) for sleep apnea event detection algorithms. The IPVS consists of a feature dimensionality reduction module and a feature reconstruction module. First, features of blood oxygen saturation and nasal airflow are extracted and used as input data for event analysis. Then, visual analysis is conducted on the feature distribution for apnea events. Next, dimensionality reduction and reconstruction methods are combined to achieve the dynamic visualization of sleep apnea event feature sets and the visual analysis of classifier decision boundaries. Moreover, the decision-making consistency is explored for various sleep apnea event detection classifiers, which provides researchers and users with an intuitive understanding of the detection algorithm. We applied the IPVS to an OSA detection algorithm with an accuracy of 84% and a diagnostic accuracy of 92% on a publicly available dataset. The experimental results show that the consistency between our visualization results and prior medical knowledge provides strong evidence for the practicality of the proposed system. For clinical practice, the IPVS can guide users to focus on samples with higher uncertainty presented by the OSA detection algorithm, reducing the workload and improving the efficiency of clinical diagnosis, which in turn increases the value of trust.
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Affiliation(s)
- Ronghe Chu
- College of Intelligence and Computing, Tianjin University, Tianjin, 300350, China.
| | - Jianguo Wei
- College of Intelligence and Computing, Tianjin University, Tianjin, 300350, China.
| | - Wenhuan Lu
- College of Intelligence and Computing, Tianjin University, Tianjin, 300350, China.
| | - Chaoyu Dong
- School of Electrical and Information Engineering, Tianjin University, Tianjin, 300072, China.
| | - Yibing Chen
- Department of Pulmonary and Critical Care Medicine, First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China.
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23
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Sardari S, Hheidari A, Ghodousi M, Rahi A, Pishbin E. Nanotechnology in tissue engineering: expanding possibilities with nanoparticles. NANOTECHNOLOGY 2024; 35:392002. [PMID: 38941981 DOI: 10.1088/1361-6528/ad5cfb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 06/28/2024] [Indexed: 06/30/2024]
Abstract
Tissue engineering is a multidisciplinary field that merges engineering, material science, and medical biology in order to develop biological alternatives for repairing, replacing, maintaining, or boosting the functionality of tissues and organs. The ultimate goal of tissue engineering is to create biological alternatives for repairing, replacing, maintaining, or enhancing the functionality of tissues and organs. However, the current landscape of tissue engineering techniques presents several challenges, including a lack of suitable biomaterials, inadequate cell proliferation, limited methodologies for replicating desired physiological structures, and the unstable and insufficient production of growth factors, which are essential for facilitating cell communication and the appropriate cellular responses. Despite these challenges, there has been significant progress made in tissue engineering techniques in recent years. Nanoparticles hold a major role within the realm of nanotechnology due to their unique qualities that change with size. These particles, which provide potential solutions to the issues that are met in tissue engineering, have helped propel nanotechnology to its current state of prominence. Despite substantial breakthroughs in the utilization of nanoparticles over the past two decades, the full range of their potential in addressing the difficulties within tissue engineering remains largely untapped. This is due to the fact that these advancements have occurred in relatively isolated pockets. In the realm of tissue engineering, the purpose of this research is to conduct an in-depth investigation of the several ways in which various types of nanoparticles might be put to use. In addition to this, it sheds light on the challenges that need to be conquered in order to unlock the maximum potential of nanotechnology in this area.
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Affiliation(s)
- Sohrab Sardari
- School of Mechanical Engineering, Iran University of Science and Technology, Tehran 13114-16846, Iran
| | - Ali Hheidari
- Department of Mechanical Engineering, Islamic Azad University, Science and Research branch, Tehran, Iran
| | - Maryam Ghodousi
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA, United States of America
| | - Amid Rahi
- Pathology and Stem Cell Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Esmail Pishbin
- Bio-microfluidics Lab, Department of Electrical Engineering and Information Technology, Iranian Research Organization for Science and Technology, Tehran, Iran
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24
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Krymchenko R, Coşar Kutluoğlu G, van Hout N, Manikowski D, Doberenz C, van Kuppevelt TH, Daamen WF. Elastogenesis in Focus: Navigating Elastic Fibers Synthesis for Advanced Dermal Biomaterial Formulation. Adv Healthc Mater 2024:e2400484. [PMID: 38989717 DOI: 10.1002/adhm.202400484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/31/2024] [Indexed: 07/12/2024]
Abstract
Elastin, a fibrous extracellular matrix (ECM) protein, is the main component of elastic fibers that are involved in tissues' elasticity and resilience, enabling them to undergo reversible extensibility and to endure repetitive mechanical stress. After wounding, it is challenging to regenerate elastic fibers and biomaterials developed thus far have struggled to induce its biosynthesis. This review provides a comprehensive summary of elastic fibers synthesis at the cellular level and its implications for biomaterial formulation, with a particular focus on dermal substitutes. The review delves into the intricate process of elastogenesis by cells and investigates potential triggers for elastogenesis encompassing elastin-related compounds, ECM components, and other molecules for their potential role in inducing elastin formation. Understanding of the elastogenic processes is essential for developing biomaterials that trigger not only the synthesis of the elastin protein, but also the formation of a functional and branched elastic fiber network.
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Affiliation(s)
- Roman Krymchenko
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
| | - Gizem Coşar Kutluoğlu
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
- MedSkin Solutions Dr. Suwelack AG, 48727, Billerbeck, Germany
| | - Noor van Hout
- Department of Dermatology, Radboud university medical center, Nijmegen, 6525 GA, The Netherlands
| | | | | | - Toin H van Kuppevelt
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
| | - Willeke F Daamen
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
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25
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Ping Y, Peng H, Zhu Y, Feng Y, Zhang Y, Qi X, Liu X. Spatial preference behavior of robo-pigeons induced by electrical stimulus targeting fear nuclei. Biomed Mater Eng 2024:BME240048. [PMID: 38995766 DOI: 10.3233/bme-240048] [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: 07/14/2024]
Abstract
BACKGROUND Numerous studies have confirmed that stimulating the mid-brain motor nuclei can regulate movement forcibly for robo-pigeons, but research on behavior modulation using non-motor nuclei is scarce. OBJECTIVE In this study, we constructed a spatial preference behavior by stimulating the stratum griseum periventriculare (SGP), a nucleus correlated with fear and escape, for robo-pigeons. METHODS The study was carried out in a square-enclosed experimental field, with a designated box serving as the 'safe' area for the robo-pigeons. If the robo-pigeon exits this area, the SGP will be stimulated. After a brief training period, the robo-pigeons will have a clear spatial preference for the box. RESULTS The result from five pigeons has shown that, after simple training, the animals develop a spatial preference for the box. They can quickly return to the box in any situation when the SGP is stimulated, with a success rate exceeding 80% (89.0 ± 6.5%). Moreover, this behavior is highly stable and remains consistent, unaffected by changes in the location of the box or the interference box. CONCLUSION The results prove that using the electrical stimulus could enable animals to accomplish more complex tasks. It may offer a novel approach to regulating pigeon behavior and further advance the study of cyborg animals.
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Affiliation(s)
- Yanna Ping
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- Henan Engineering Research Center of Intelligent Human-Machine Interaction Equipment, Huanghuai University, Zhumadian, China
| | - Huanhuan Peng
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- Henan Engineering Research Center of Intelligent Human-Machine Interaction Equipment, Huanghuai University, Zhumadian, China
| | - Yongjun Zhu
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou, China
| | - Yuhao Feng
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou, China
| | - Yexin Zhang
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- School of Electronic and Information Engineering, Zhongyuan University of Technology, Zhengzhou, China
| | - Xiaomin Qi
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- Henan Engineering Research Center of Intelligent Human-Machine Interaction Equipment, Huanghuai University, Zhumadian, China
| | - Xinyu Liu
- School of Intelligent Manufacturing, Huanghuai University, Zhumadian, China
- Henan Engineering Research Center of Intelligent Human-Machine Interaction Equipment, Huanghuai University, Zhumadian, China
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26
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Niknam B, Ayenehdeh JM, Hossein-Khannazer N, Vosough M, Tajik N. Adipose Tissue-Derived Mesenchymal Stromal Cells Modulate Inflammatory Response and Improve Allograft Islet Transplant in Mice Model of Type 1 Diabetes. Endocr Res 2024:1-9. [PMID: 38982737 DOI: 10.1080/07435800.2024.2377286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 07/02/2024] [Indexed: 07/11/2024]
Abstract
OBJECTIVE Type 1 diabetes mellitus (T1DM) is an autoimmune disease where immune cells attack insulin-producing beta cells. Islet transplantation is a promising treatment for T1DM. This study aims to evaluate the effects of adipose tissue-derived mesenchymal stem cells (AT-MSCs) in combination with pancreatic islet transplantation using hydrogel. METHODS T1DM mouse model was established using streptozotocin (STZ). Islets and AT-MSCs were co-embedded in a hydrogel and transplanted into diabetic mice. Five groups with six animals in each (control, hydrogel alone, AT-MSCs embedded hydrogel, islet embedded in hydrogel, and islet + AT-MSCs co-imbedded into a hydrogel) were evaluated in terms of blood glucose, insulin levels and serum and lavage cytokine production. RESULTS During 32 days, blood glucose levels decreased from over 400 mg/dl to less than 150 mg/dl in the transplanted mice. Analysis showed increased transformation growth factor beta (TGF-β1) and IL-4 levels, while IL-17 and IFN-γ levels significantly decreased in the MSC-treated groups. CONCLUSION These findings suggest that using AT-MSCs with hydrogel could be a beneficial alternative for enhancing pancreatic islet engraftment and function.
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Affiliation(s)
- Bahare Niknam
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jamal Mohammadi Ayenehdeh
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nikoo Hossein-Khannazer
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Massoud Vosough
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Nader Tajik
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
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27
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Herrera-Rivera MDR, Torres-Arellanes SP, Cortés-Martínez CI, Navarro-Ibarra DC, Hernández-Sánchez L, Solis-Pomar F, Pérez-Tijerina E, Román-Doval R. Nanotechnology in food packaging materials: role and application of nanoparticles. RSC Adv 2024; 14:21832-21858. [PMID: 38984259 PMCID: PMC11231830 DOI: 10.1039/d4ra03711a] [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: 05/20/2024] [Accepted: 06/27/2024] [Indexed: 07/11/2024] Open
Abstract
Global concerns about food security, driven by rising demand, have prompted the exploration of nanotechnology as a solution to enhance food supply. This shift comes in response to the limitations of conventional technologies in meeting the ever-increasing demand for food products. Consequently, nanoparticles play a crucial role in enhancing food production, preservation, and extending shelf life by imparting exceptional properties to materials. Nanoparticles and nanostructures with attributes like expansive surface area and antimicrobial efficacy, are versatile in both traditional packaging and integration into biopolymer matrices. These distinctive qualities contribute to their extensive use in various food sector applications. Hence, this review explores the physicochemical properties, functions, and biological aspects of nanoparticles in the context of food packaging. Furthermore, the synergistic effect of nanoparticles with different biopolymers, alongside its different potential applications such as food shelf-life extenders, antimicrobial agents and as nanomaterials for developing smart packaging systems were summarily explored. While the ongoing exploration of this research area is evident, our review highlights the substantial potential of nanomaterials to emerge as a viable choice for food packaging if the challenges regarding toxicity are carefully and effectively modulated.
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Affiliation(s)
| | - Sandra P Torres-Arellanes
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla Abasolo S/N, Barrio del Agua Buena Santiago Suchilquitongo Oaxaca 68230 Mexico
| | - Carlos Inocencio Cortés-Martínez
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla Abasolo S/N, Barrio del Agua Buena Santiago Suchilquitongo Oaxaca 68230 Mexico
| | - Diana C Navarro-Ibarra
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla Abasolo S/N, Barrio del Agua Buena Santiago Suchilquitongo Oaxaca 68230 Mexico
| | - Laura Hernández-Sánchez
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla Abasolo S/N, Barrio del Agua Buena Santiago Suchilquitongo Oaxaca 68230 Mexico
| | - Francisco Solis-Pomar
- Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León San Nicolas de los Garza Nuevo León 66451 Mexico
| | - Eduardo Pérez-Tijerina
- Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León San Nicolas de los Garza Nuevo León 66451 Mexico
| | - Ramón Román-Doval
- Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla Abasolo S/N, Barrio del Agua Buena Santiago Suchilquitongo Oaxaca 68230 Mexico
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28
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Redwan SM, Uddin MP, Ulhaq A, Sharif MI, Krishnamoorthy G. Power spectral density-based resting-state EEG classification of first-episode psychosis. Sci Rep 2024; 14:15154. [PMID: 38956297 PMCID: PMC11219808 DOI: 10.1038/s41598-024-66110-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 06/27/2024] [Indexed: 07/04/2024] Open
Abstract
Historically, the analysis of stimulus-dependent time-frequency patterns has been the cornerstone of most electroencephalography (EEG) studies. The abnormal oscillations in high-frequency waves associated with psychotic disorders during sensory and cognitive tasks have been studied many times. However, any significant dissimilarity in the resting-state low-frequency bands is yet to be established. Spectral analysis of the alpha and delta band waves shows the effectiveness of stimulus-independent EEG in identifying the abnormal activity patterns of pathological brains. A generalized model incorporating multiple frequency bands should be more efficient in associating potential EEG biomarkers with first-episode psychosis (FEP), leading to an accurate diagnosis. We explore multiple machine-learning methods, including random-forest, support vector machine, and Gaussian process classifier (GPC), to demonstrate the practicality of resting-state power spectral density (PSD) to distinguish patients of FEP from healthy controls. A comprehensive discussion of our preprocessing methods for PSD analysis and a detailed comparison of different models are included in this paper. The GPC model outperforms the other models with a specificity of 95.78% to show that PSD can be used as an effective feature extraction technique for analyzing and classifying resting-state EEG signals of psychiatric disorders.
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Affiliation(s)
- Sadi Md Redwan
- Department of Computer Science and Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Palash Uddin
- Department of Computer Science and Engineering, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh
- School of Information Technology, Deakin University, Geelong, VIC, 3220, Australia
| | - Anwaar Ulhaq
- School of Engineering and Technology, Central Queensland University Australia, 400 Kent Street, Sydney, NSW, 2000, Australia.
| | | | - Govind Krishnamoorthy
- School of Psychology and Wellbeing, University of Southern Queensland, Ipswich, QLD, Australia
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29
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Nguyen ATN, Nguyen DTN, Koh HY, Toskov J, MacLean W, Xu A, Zhang D, Webb GI, May LT, Halls ML. The application of artificial intelligence to accelerate G protein-coupled receptor drug discovery. Br J Pharmacol 2024; 181:2371-2384. [PMID: 37161878 DOI: 10.1111/bph.16140] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 04/14/2023] [Accepted: 04/27/2023] [Indexed: 05/11/2023] Open
Abstract
The application of artificial intelligence (AI) approaches to drug discovery for G protein-coupled receptors (GPCRs) is a rapidly expanding area. Artificial intelligence can be used at multiple stages during the drug discovery process, from aiding our understanding of the fundamental actions of GPCRs to the discovery of new ligand-GPCR interactions or the prediction of clinical responses. Here, we provide an overview of the concepts behind artificial intelligence, including the subfields of machine learning and deep learning. We summarise the published applications of artificial intelligence to different stages of the GPCR drug discovery process. Finally, we reflect on the benefits and limitations of artificial intelligence and share our vision for the exciting potential for further development of applications to aid GPCR drug discovery. In addition to making the drug discovery process "faster, smarter and cheaper," we anticipate that the application of artificial intelligence will create exciting new opportunities for GPCR drug discovery. LINKED ARTICLES: This article is part of a themed issue Therapeutic Targeting of G Protein-Coupled Receptors: hot topics from the Australasian Society of Clinical and Experimental Pharmacologists and Toxicologists 2021 Virtual Annual Scientific Meeting. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.14/issuetoc.
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Affiliation(s)
- Anh T N Nguyen
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Diep T N Nguyen
- Department of Information Technology, Faculty of Engineering and Technology, Vietnam National University, Cau Giay, Hanoi, Vietnam
| | - Huan Yee Koh
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Monash Data Futures Institute and Department of Data Science and Artificial Intelligence, Monash University, Clayton, Victoria, Australia
| | - Jason Toskov
- Monash DeepNeuron, Monash University, Clayton, Victoria, Australia
| | - William MacLean
- Monash DeepNeuron, Monash University, Clayton, Victoria, Australia
| | - Andrew Xu
- Monash DeepNeuron, Monash University, Clayton, Victoria, Australia
| | - Daokun Zhang
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Monash Data Futures Institute and Department of Data Science and Artificial Intelligence, Monash University, Clayton, Victoria, Australia
| | - Geoffrey I Webb
- Monash Data Futures Institute and Department of Data Science and Artificial Intelligence, Monash University, Clayton, Victoria, Australia
| | - Lauren T May
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Michelle L Halls
- Drug Discovery Biology Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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30
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Bernert M, Bignoux MJ, Madhav C, Gqeba S, Otgaar TC, Morris G, Weiss SFT, Ferreira E. PLGA nanocapsules as a delivery system for a recombinant LRP-based therapeutic. FEBS Open Bio 2024; 14:1072-1086. [PMID: 38702074 PMCID: PMC11216925 DOI: 10.1002/2211-5463.13809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/12/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024] Open
Abstract
Telomerase activity is directly affected by the laminin receptor precursor (LRP) protein, a highly conserved nonintegrin transmembrane receptor, which has been shown to have therapeutic effects in ageing, and age-related diseases. Recently, it has been found that overexpression of LRP-FLAG, by plasmid transfection, leads to a significant increase in telomerase activity in cell culture models. This may indicate that upregulation of LRP can be used to treat various age-related diseases. However, transfection is not a viable treatment strategy for patients. Therefore, we present a nanoencapsulated protein-based drug synthesised using poly(lactic-co-glycolic acid) (PLGA) nanocapsules for delivery of the 37 kDa LRP protein therapeutic. PLGA nanocapsules were synthesised using the double emulsification-solvent evaporation technique. Different purification methods, including filtration and centrifugation, were tested to ensure that the nanocapsules were within the optimal size range, and the BCA assay was used to determine encapsulation efficiency. The completed drug was tested in a HEK-293 cell culture model, to investigate the effect on cell viability, LRP protein levels and telomerase activity. A significant increase in total LRP protein levels with a concomitant increase in cell viability and telomerase activity was observed. Due to the observed increase in telomerase activity, this approach could represent a safer alternative to plasmid transfection for the treatment of age-related diseases.
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Affiliation(s)
- Martin Bernert
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Monique J. Bignoux
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Chandni Madhav
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Sichumiso Gqeba
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Tyrone C. Otgaar
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Gavin Morris
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Stefan F. T. Weiss
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Eloise Ferreira
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
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Ahmed SZ, Khan AS, Aljeshi NM, Md Sabri BA, Akhtar S, Abu Hassan MI. A Comparative In Vitro Physicochemical Analysis of Resin Infiltrants Doped With Bioactive Glasses. Cureus 2024; 16:e64500. [PMID: 39007016 PMCID: PMC11246546 DOI: 10.7759/cureus.64500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2024] [Indexed: 07/16/2024] Open
Abstract
Objective This study aimed to investigate the longevity and effectiveness of bioactive glass (BAG)-based dental resin infiltrants. Materials and methods The three types of BAG - 45S5 bioglass (RIS), boron-substituted (RIB), and fluoride-substituted (RIF) - were incorporated with photoinitiated dimethacrylate monomers to create experimental resin infiltrants. ICON® (CN; DMG-America, Ridgefield Park, NJ) and pure resin (PR) were used as control groups in this study. Disc-shaped samples were prepared for the experimental and control groups. The samples were challenged with the pH cycle and immersed in the artificial saliva for 30 days. On Day 0 and Day 30, the pH cycle and artificial saliva immersion, Vicker's microhardness, surface roughness, and surface morphology were investigated. Results The RIF group's disc samples showed the highest Vicker's microhardness values (78.20 ±0.06) on Day 30 of artificial saliva immersion, whereas the CN group's values were the lowest (55.99 ±0.24). Following the pH cycling, the RIF displayed the highest hardness (64.15 ±1.89) whereas the CN group's values were the lowest (33.47 ±1.28). Regarding surface roughness, on Day 30, the RIB resin group exhibited the highest (1.14 ±0.001 µm). In contrast, the CN resin showed the lowest (1.07 ±0.06 µm) values, while immersed in the artificial saliva solution. In the same duration of time, in the pH cycling solution, PR showed the least (0.85 ±0.89 µm), while RIF showed the highest roughness value (0.94 ±0.54 µm). Morphological analysis revealed that following the artificial saliva immersion, the RIB, CN, and PR exhibited smoother surfaces compared to the RIS and RIF groups. However, when immersed in the pH cycling solution, RIB and RIF showed more resistance against acid attack. Conclusions Our results revealed that the experimental resin groups performed much better than the commercial resin infiltrants following artificial saliva and pH cycling challenges.
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Affiliation(s)
- Syed Zubairuddin Ahmed
- Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, SAU
| | - Abdul S Khan
- Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, SAU
| | - Naemah M Aljeshi
- Dentistry, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, SAU
| | - Budi A Md Sabri
- Dentistry, College of Dentistry, University Teknologi Mara, Sungai Buloh, MYS
| | - Sultan Akhtar
- Department of Biophysics, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, SAU
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Wang Y, Li P, Zhu Y, Zhang F, Zhang S, He Y, Wu Y, Lin Y, Wang H, Ren W, Wang L, Yang Y, Wang R, Zheng P, Liu Y, Wang S, Yue J. Graph-Based Pangenome of Actinidia chinensis Reveals Structural Variations Mediating Fruit Degreening. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400322. [PMID: 38757662 PMCID: PMC11267314 DOI: 10.1002/advs.202400322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/19/2024] [Indexed: 05/18/2024]
Abstract
Fruit ripening is associated with the degreening process (loss of chlorophyll) that occurs in most fruit species. Kiwifruit is one of the special species whose fruits may maintain green flesh by accumulating a large amount of chlorophyll even after ripening. However, little is known about the genetic variations related to the fruit degreening process. Here, a graph-based kiwifruit pangenome by analyzing 14 chromosome-scale haplotype-resolved genome assemblies from seven representative cultivars or lines in Actinidia chinensis is built. A total of 49,770 non-redundant gene families are identified, with core genes constituting 46.6%, and dispensable genes constituting 53.4%. A total of 84,591 non-redundant structural variations (SVs) are identified. The pangenome graph integrating both reference genome sequences and variant information facilitates the identification of SVs related to fruit color. The SV in the promoter of the AcBCM gene determines its high expression in the late developmental stage of fruits, which causes chlorophyll accumulation in the green-flesh fruits by post-translationally regulating AcSGR2, a key enzyme of chlorophyll catabolism. Taken together, a high-quality pangenome is constructed, unraveled numerous genetic variations, and identified a novel SV mediating fruit coloration and fruit quality, providing valuable information for further investigating genome evolution and domestication, QTL genes function, and genomics-assisted breeding.
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Affiliation(s)
- Yingzhen Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
- School of Forestry Science and TechnologyLishui Vocational and Technical CollegeLishui323000China
| | - Pengwei Li
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Yanyan Zhu
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Feng Zhang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Sijia Zhang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Yan He
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Ying Wu
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Yunzhi Lin
- Ministry of Education Key Laboratory for Bio‐resource and Eco‐environmentCollege of Life ScienceState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu610064China
| | - Hongtao Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Wangmei Ren
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Lihuan Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Ying Yang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Runze Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Pengpeng Zheng
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Yongsheng Liu
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
- Ministry of Education Key Laboratory for Bio‐resource and Eco‐environmentCollege of Life ScienceState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu610064China
| | - Songhu Wang
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
| | - Junyang Yue
- Anhui Province Key Laboratory of Horticultural Crop Quality BiologySchool of HorticultureAnhui Agricultural UniversityHefei230036China
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Abdulrazzaq AMM. Assessing Genotoxicity of Bovine Pericardium in Guided Tissue Regeneration: Bacterial Reverse Mutation Assay With Exogenous Metabolic Activation. Cureus 2024; 16:e64078. [PMID: 38979024 PMCID: PMC11229664 DOI: 10.7759/cureus.64078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2024] [Indexed: 07/10/2024] Open
Abstract
Introduction Guided tissue regeneration (GTR) is integral to periodontal therapy, facilitating the repair of osseous defects. Due to the widespread use of bovine pericardium (BP) in GTR, a thorough investigation into its genotoxicity is essential for patient safety and treatment efficacy. This study aimed to evaluate the genotoxic effects of local BP in GTR for periodontal osseous defects. Materials and methods The Bacterial Reverse Mutation Assay (Ames test) was used to assess the genotoxic potential of local BP. An exogenous metabolic activation system was employed to evaluate the direct effects of the material on bacterial cells. Results The study investigated the mutagenic effects of local BP across multiple strains of Salmonella typhimurium, utilizing concentrations ranging from 0.3125 mg/plate to 5 mg/plate. While some variability was observed in revertant counts, the generally low SDs suggest a consistent response to the test substance. The maximum revertant count for each strain did not significantly exceed the mean values, indicating the absence of notable outliers or exceptionally high revertant counts at any specific concentration. Based on the data and toxicity assessment criteria, there is insufficient evidence to suggest that the experimental material induces genotoxic effects in the tested bacterial strains under the provided experimental conditions. Conclusion This study assessed the mutagenic potential of local BP membranes used in GTR with the Ames test. Results showed no evidence of mutagenicity, as revertant counts did not exceed twice the negative control in all bacterial strains with exogenous metabolic activation. This suggests that bovine pericardium membranes are safe for medical use under the test conditions. The study highlights the biocompatibility and non-mutagenic nature of BP membranes in GTR for periodontal therapy.
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Zhu Z, Chen G, Ma T, Wang S, Tang X, Liu C. A Novel Leverage Technique Using Monoaxial Pedicle Screw for Reduction of Thoracolumbar Compression Fractures: Surgical Technique and Analysis of Radiological Parameters. Orthop Surg 2024; 16:1538-1547. [PMID: 38784977 PMCID: PMC11216827 DOI: 10.1111/os.14065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 05/25/2024] Open
Abstract
OBJECTIVE Thoracolumbar compression fractures resulting from high-energy injuries are a common type of spinal fracture. Satisfying reduction of compressive vertebra body is essential for the clinical outcome. However, traditional distraction technique may lead to complications including pedicle screw loosening, pedicle screw breakage, and postoperative back pain because of excessive distraction. In this study, we reported a novel technique for reduction. Additionally, the effect and postoperative radiological parameters of this technique were compared with those of traditional distraction technique. METHODS The clinical data of 80 patients who had been treated with posterior pedicle screw fixation from January 2019 to December 2020 was retrospectively analyzed. Thirty-six patients were performed with the leverage technique, while 22 patients were treated with the traditional distraction technique. When pedicle screw fixation was performed with either the leverage technique or the traditional distraction technique, fracture reduction was completed with monoaxial pedicle screws using either the leverage maneuver or distraction of adjacent vertebrae. Clinical evaluation, including operation time, hospital stay, blood loss volume, and postoperative complications were collected. The American Spinal Injury Association (ASIA) score for neurological condition and the visual analog scale (VAS) score for pain were used to evaluate the patients' functional outcome. The radiographic analysis included local kyphotic angle (LKA), regional kyphotic angle (RKA), anterior vertebral height (AVH), posterior vertebral height (PVH), and sagittal compression (SC). The student t-test and the χ2-test (or the Fisher exact test) were used to compare the outcome measures between the two groups. RESULTS The leverage group comprised 36 patients, while 44 patients were included in the distraction group. No statistically significant differences were found in the demographic data. The VAS score in the leverage group (3.0 ± 0.8) was significantly lower than that in the distraction group (4.2 ± 0.6) on postoperative day 1. Total correction of the LKA in the leverage group (11.5 ± 2.5°) was significantly higher than that in the distraction group (7.1 ± 1.3°) (p = 0.0004). Total correction of the RKA was higher in the leverage group (12.1 ± 4.3°) than in the distraction group (6.1 ± 0.9°) (p = 0.005). The ratio of rear pillar /front pillar correction was 0.35 ± 0.13 and 0.89 ± 0.18 in the leverage and distraction groups, respectively (p = 0.014). Total correction of the upper and lower foraminal height in the leverage group was significantly less than that in the distraction group. The leverage group had significantly higher correction of the upper and lower intervertebral space height than the distraction group. CONCLUSIONS Our novel leverage technique provided better kyphotic reduction and restoration than compared to conventional distraction technique in the surgical treatment of thoracolumbar compression fractures.
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Affiliation(s)
- Ziqing Zhu
- Department of Orthopedics, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Guangzi Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Tian Ma
- Department of Orthopedics, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Shanxi Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Xiangyu Tang
- Department of Radiology, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Chaoxu Liu
- Department of Orthopedics, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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Chiang H, Chung CA. Simulation of Soluble and Bound VEGF-stimulated in vitro Capillary-like Network Formation on Deformed Substrate. PLoS Comput Biol 2024; 20:e1012281. [PMID: 39038038 PMCID: PMC11262697 DOI: 10.1371/journal.pcbi.1012281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 06/26/2024] [Indexed: 07/24/2024] Open
Abstract
Capillary plexus cultivation is crucial in tissue engineering and regenerative medicine. Theoretical simulations have been conducted to supplement the expensive experimental works. However, the mechanisms connecting mechanical and chemical stimuli remained undefined, and the functions of the different VEGF forms in the culture environment were still unclear. In this paper, we developed a hybrid model for simulating short-term in vitro capillary incubations. We used the Cellular Potts model to predict individual cell migration, morphology change, and continuum mechanics to quantify biogel deformation and VEGF transport dynamics. By bridging the mechanical regulation and chemical stimulation in the model, the results showed good agreement between the predicted network topology and experiments, in which elongated cells connected, forming the network cords and round cells gathered, creating cobblestone-like aggregates. The results revealed that the capillary-like networks could develop in high integrity only when the mechanical and chemical couplings worked adequately, with the cell morphology and haptotaxis driven by the soluble and bound forms of VEGF, respectively, functioning simultaneously.
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Affiliation(s)
- Hsun Chiang
- Department of Mechanical Engineering, National Central University, Taoyuan, Taiwan
| | - Chih-Ang Chung
- Department of Mechanical Engineering, National Central University, Taoyuan, Taiwan
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Leveque M, Bekhouche M, Farges JC, Richert R, Ducret M. Investigation of the early apical release from endodontic hydrogels: A 3D printed model. Int Endod J 2024; 57:943-950. [PMID: 38376094 DOI: 10.1111/iej.14049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024]
Abstract
AIM Regenerative Endodontic Procedures (REPs) using new materials such as hydrogels aim to replace current endodontic treatments, but numerous limitations are to overcome. Apical release was little explored in previous studies, especially regarding hydrogels that incorporate molecules, such as growth factors and antibiotics. Apical release is a key mechanism in achieving regeneration, as it could regulate disinfection or cell colonization. Few models exist for apical release, limiting the transfer of these devices from bench to bedside. This study aims to design a simple and standardized model to identify parameters that influence the early apical release kinetic of molecules from endodontic hydrogels. METHODOLOGY Endodontic Release Inserts (ERI) were designed to mimic the situation of an immature incisor using three different diameters (Ø 0.5 to 2 mm) and to allow the study of the early release from a hydrogel in a 96-well plate. ERI was produced with a 3D printing machine. The kinetic release was investigated using 2 fluorescent, hydrophobic (BDP-500) and hydrophilic (Fluorescein) molecules, in different hydrogels (fibrin and agarose) and in various media (PBS or serum). The release kinetics were estimated by measuring the fluorescence at different time points (1 to 24 h). RESULTS ERI use made it possible to report that apical diameters increase from 500 to 1000 μm was associated with an increase in release from 4.02 ± 1.63% to 11.53 ± 2.38% over 24 h. It also allowed us to report that bottom solution composition change from PBS to human serum was associated with an increase in the release of fatty acid molecules, whilst a decrease in the hydrogel concentration was associated with a variation in release kinetics. Moreover, nano-encapsulation of a molecule was associated with a decreased release over the first 24 h from 5.25 to 0%. CONCLUSION ERI use enables investigation of the parameters influencing release kinetics from endodontic hydrogels. Further investigations are necessary to evaluate the interaction of these parameters with each other, in animal models and clinic.
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Affiliation(s)
- Marianne Leveque
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR 5305 CNRS/Université Claude Bernard Lyon 1, UMS 3444 BioSciences Gerland-Lyon Sud, Lyon, France
| | - Mourad Bekhouche
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR 5305 CNRS/Université Claude Bernard Lyon 1, UMS 3444 BioSciences Gerland-Lyon Sud, Lyon, France
| | - Jean-Christophe Farges
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR 5305 CNRS/Université Claude Bernard Lyon 1, UMS 3444 BioSciences Gerland-Lyon Sud, Lyon, France
- Faculté d'Odontologie, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Service d'Odontologie, Hospices Civils de Lyon, Lyon, France
| | - Raphaël Richert
- Faculté d'Odontologie, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Service d'Odontologie, Hospices Civils de Lyon, Lyon, France
- UMR 5259 CNRS/INSA/Univ, Lyon, France
| | - Maxime Ducret
- Laboratoire de Biologie Tissulaire et Ingénierie thérapeutique, UMR 5305 CNRS/Université Claude Bernard Lyon 1, UMS 3444 BioSciences Gerland-Lyon Sud, Lyon, France
- Faculté d'Odontologie, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Service d'Odontologie, Hospices Civils de Lyon, Lyon, France
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Seo U, Choi YJ, Kim KJ. Cylindrical depth image based customized helical bone plate design. Med Eng Phys 2024; 129:104187. [PMID: 38906577 DOI: 10.1016/j.medengphy.2024.104187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 05/06/2024] [Accepted: 05/20/2024] [Indexed: 06/23/2024]
Abstract
Commercial straight metal plates have been generally used to fix fractured bones, but recently, the need for customized and helical metal plates has emerged. Customized metal plates are designed to fit the shape of the fracture area that is a 3D curved surface, making it more difficult than designing on a 2D plane. Helical plates are researched due to their advantage in avoiding blood vessel damage compared to commercially available straight metal plates. In this paper, we propose a novel algorithm to design a customized helical metal plate for the femur using cylindrical depth images and Boolean operations. We also present the results of 3D printing a metal plate designed using the proposed algorithm, and the shape matching is verified by calculating the minimum distance between the surface of the printed plate and the surface of the femur.
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Affiliation(s)
- Udeok Seo
- 3D Convergence Technology Center, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea; School of Computer Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea
| | - Yoo-Joo Choi
- Dept. of AI Software Engineering, Seoul Media Institute of Technology, Seoul, 03925, South Korea
| | - Ku-Jin Kim
- School of Computer Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea.
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Fu K, Yang LL, Gao N, Liu P, Xue B, He W, Qiu W, Wen X. Modified five times simulated body fluid for efficient biomimetic mineralization. Heliyon 2024; 10:e32850. [PMID: 38975072 PMCID: PMC11226902 DOI: 10.1016/j.heliyon.2024.e32850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 06/09/2024] [Accepted: 06/11/2024] [Indexed: 07/09/2024] Open
Abstract
Simulated body fluid (SBF) is widely utilized in preclinical research for estimating the mineralization efficacy of biomaterials. Therefore, it is of great significance to construct an efficient and stable SBF mineralization system. The conventional SBF solutions cannot maintain a stable pH value and are prone to precipitate homogeneous calcium salts at the early stages of the biomimetic process because of the release of gaseous CO2. In this study, a simple but efficient five times SBF buffered by 5 % CO2 was developed and demonstrated to achieve excellent mineralized microstructure on a type of polymer-aligned nanofibrous scaffolds, which is strikingly similar to the natural human bone tissue. Scanning electron microscopy and energy-dispersive X-ray examinations indicated the growth of heterogeneous apatite with a high-calcium-to-phosphate ratio on the aligned nanofibers under 5 times SBF buffered by 5 % CO2. Moreover, X-ray diffraction spectroscopy and Fourier transform infrared analyses yielded peaks associated with carbonated hydroxyapatite with less prominent crystallization. In addition, the biomineralized aligned polycaprolactone nanofibers demonstrated excellent cell attachment, alignment, and proliferation characteristics in vitro. Overall, the results of this study showed that 5 × SBFs buffered by 5 % CO2 partial pressure are attractive alternatives for the efficient biomineralization of scaffolds in bone tissue engineering, and could be used as a model for the prediction of the bone-bonding bioactivity of biomaterials.
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Affiliation(s)
- Kun Fu
- Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Lei-Lei Yang
- Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Ning Gao
- Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Pengbi Liu
- Department of Chemical and Life Science Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Bo Xue
- Department of Chemical and Life Science Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Wei He
- Department of Stomatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Weiliu Qiu
- Department of Oral & Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Xuejun Wen
- Department of Chemical and Life Science Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
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Verboket RD, Henrich D, Janko M, Sommer K, Neijhoft J, Söhling N, Weber B, Frank J, Marzi I, Nau C. Human Acellular Collagen Matrices-Clinical Opportunities in Tissue Replacement. Int J Mol Sci 2024; 25:7088. [PMID: 39000200 PMCID: PMC11241445 DOI: 10.3390/ijms25137088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/19/2024] [Accepted: 06/26/2024] [Indexed: 07/16/2024] Open
Abstract
The field of regenerative medicine is increasingly in need of effective and biocompatible materials for tissue engineering. Human acellular dermal matrix (hADM)-derived collagen matrices stand out as a particularly promising candidate. Their ability to preserve structural integrity, coupled with exceptional biocompatibility, positions them as a viable choice for tissue replacement. However, their clinical application has been largely confined to serving as scaffolds. This study aims to expand the horizon of clinical uses for collagen sheets by exploring the diverse cutting-edge clinical demands. This review illustrates the clinical utilizations of collagen sheets beyond traditional roles, such as covering skin defects or acting solely as scaffolds. In particular, the potential of Epiflex®, a commercially available and immediately clinically usable allogeneic membrane, will be evaluated. Collagen sheets have demonstrated efficacy in bone reconstruction, where they can substitute the induced Masquelet membrane in a single-stage procedure, proving to be clinically effective and safe. The application of these membranes allow the reconstruction of substantial tissue defects, without requiring extensive plastic reconstructive surgery. Additionally, they are found to be apt for addressing osteochondritis dissecans lesions and for ligament reconstruction in the carpus. The compelling clinical examples showcased in this study affirm that the applications of human ADM extend significantly beyond its initial use for skin defect treatments. hADM has proven to be highly successful and well-tolerated in managing various etiologies of bone and soft tissue defects, enhancing patient care outcomes. In particular, the application from the shelf reduces the need for additional surgery or donor site defects.
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Affiliation(s)
- René D. Verboket
- Department of Trauma Surgery and Orthopaedics, University Hospital, Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; (D.H.); (M.J.); (K.S.); (J.N.); (N.S.); (B.W.); (J.F.); (I.M.); (C.N.)
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Theofilis P, Kalaitzidis R. Navigating nephrotoxic waters: A comprehensive overview of contrast-induced acute kidney injury prevention. World J Radiol 2024; 16:168-183. [PMID: 38983842 PMCID: PMC11229940 DOI: 10.4329/wjr.v16.i6.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/19/2024] [Accepted: 06/17/2024] [Indexed: 06/26/2024] Open
Abstract
Contrast-induced acute kidney injury (CI-AKI) is the third leading cause of acute kidney injury deriving from the intravascular administration of contrast media in diagnostic and therapeutic procedures and leading to longer in-hospital stay and increased short and long-term mortality. Its pathophysiology, although not well-established, revolves around medullary hypoxia paired with the direct toxicity of the substance to the kidney. Critically ill patients, as well as those with pre-existing renal disease and cardiovascular comorbidities, are more susceptible to CI-AKI. Despite the continuous research in the field of CI-AKI prevention, clinical practice is based mostly on periprocedural hydration. In this review, all the investigated methods of prevention are presented, with an emphasis on the latest evidence regarding the potential of RenalGuard and contrast removal systems for CI-AKI prevention in high-risk individuals.
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Affiliation(s)
- Panagiotis Theofilis
- Center for Nephrology "G Papadakis", General Hospital of Nikaia-Piraeus "Agios Panteleimon", Nikaia-Piraeus 18454, Greece
| | - Rigas Kalaitzidis
- Center for Nephrology "G Papadakis", General Hospital of Nikaia-Piraeus "Agios Panteleimon", Nikaia-Piraeus 18454, Greece
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González-Martínez JR, López-Oyama AB, Del Ángel-López D, García-Guendulain C, Rodríguez-González E, Pulido-Barragan EU, Barffuson-Domínguez F, Magallanes-Vallejo AG, Mogica-Cantú PJ. Influence of Reduced Graphene Oxide and Carbon Nanotubes on the Structural, Electrical, and Photoluminescent Properties of Chitosan Films. Polymers (Basel) 2024; 16:1827. [PMID: 39000683 PMCID: PMC11243828 DOI: 10.3390/polym16131827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 07/17/2024] Open
Abstract
Chitosan is a biopolymer with unique properties that have attracted considerable attention in various scientific fields in recent decades. Although chitosan is known for its poor electrical and mechanical properties, there is interest in producing chitosan-based materials reinforced with carbon-based materials to impart exceptional properties such as high electrical conductivity and high Young's modulus. This study describes the synergistic effect of carbon-based materials, such as reduced graphene oxide and carbon nanotubes, in improving the electrical, optical, and mechanical properties of chitosan-based films. Our findings demonstrate that the incorporation of reduced graphene oxide influences the crystallinity of chitosan, which considerably impacts the mechanical properties of the films. However, the incorporation of a reduced graphene oxide-carbon nanotube complex not only significantly improves the mechanical properties but also significantly improves the optical and electrical properties, as was demonstrated from the photoluminescence studies and resistivity measurements employing the four-probe technique. This is a promising prospect for the synthesis of new materials, such as biopolymer films, with potential applications in optical, electrical, and biomedical bioengineering applications.
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Affiliation(s)
- Jesús R. González-Martínez
- Departamento de Investigación en Física (DIFUS), Universidad de Sonora, Blvd. Transversal S/N., Hermosillo 83000, Sonora, Mexico;
| | - Ana B. López-Oyama
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
- Conahcyt-Cicata Unidad Altamira, IPN. Km. 14.5 Carretera Puerto Industrial, Altamira 89600, Tamaulipas, Mexico
| | - Deyanira Del Ángel-López
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
| | - Crescencio García-Guendulain
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Blvd. Petrocel Km. 1.3, Altamira 89603, Tamaulipas, Mexico
| | - Eugenio Rodríguez-González
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
| | - Eder U. Pulido-Barragan
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
- Conahcyt-Cicata Unidad Altamira, IPN. Km. 14.5 Carretera Puerto Industrial, Altamira 89600, Tamaulipas, Mexico
| | - Felipe Barffuson-Domínguez
- Departamento de Física, Universidad de Sonora, Blvd. Transversal S/N., Hermosillo 83000, Sonora, Mexico;
| | - Aurora G. Magallanes-Vallejo
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
| | - Pablo J. Mogica-Cantú
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Altamira del Instituto Politécnico Nacional, Km. 14.5 Carr. Puerto Industrial, Altamira 89600, Tamaulipas, Mexico; (D.D.Á.-L.); (E.R.-G.); (E.U.P.-B.); (A.G.M.-V.); (P.J.M.-C.)
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Liu J, Younk R, Drahos LM, Nagrale SS, Yadav S, Widge AS, Shoaran M. Neural Decoding and Feature Selection Techniques for Closed-Loop Control of Defensive Behavior. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.06.597165. [PMID: 38895388 PMCID: PMC11185693 DOI: 10.1101/2024.06.06.597165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Objective Many psychiatric disorders involve excessive avoidant or defensive behavior, such as avoidance in anxiety and trauma disorders or defensive rituals in obsessive-compulsive disorders. Developing algorithms to predict these behaviors from local field potentials (LFPs) could serve as foundational technology for closed-loop control of such disorders. A significant challenge is identifying the LFP features that encode these defensive behaviors. Approach We analyzed LFP signals from the infralimbic cortex and basolateral amygdala of rats undergoing tone-shock conditioning and extinction, standard for investigating defensive behaviors. We utilized a comprehensive set of neuro-markers across spectral, temporal, and connectivity domains, employing SHapley Additive exPlanations for feature importance evaluation within Light Gradient-Boosting Machine models. Our goal was to decode three commonly studied avoidance/defensive behaviors: freezing, bar-press suppression, and motion (accelerometry), examining the impact of different features on decoding performance. Main results Band power and band power ratio between channels emerged as optimal features across sessions. High-gamma (80-150 Hz) power, power ratios, and inter-regional correlations were more informative than other bands that are more classically linked to defensive behaviors. Focusing on highly informative features enhanced performance. Across 4 recording sessions with 16 subjects, we achieved an average coefficient of determination of 0.5357 and 0.3476, and Pearson correlation coefficients of 0.7579 and 0.6092 for accelerometry jerk and bar press rate, respectively. Utilizing only the most informative features revealed differential encoding between accelerometry and bar press rate, with the former primarily through local spectral power and the latter via inter-regional connectivity. Our methodology demonstrated remarkably low time complexity, requiring <110 ms for training and <1 ms for inference. Significance Our results demonstrate the feasibility of accurately decoding defensive behaviors with minimal latency, using LFP features from neural circuits strongly linked to these behaviors. This methodology holds promise for real-time decoding to identify physiological targets in closed-loop psychiatric neuromodulation.
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Affiliation(s)
- Jinhan Liu
- Institute of Electrical and Micro Engineering, EPFL, Lausanne, Switzerland
- Neuro-X Institute, EPFL, Geneva, Switzerland
| | - Rebecca Younk
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Lauren M Drahos
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Sumedh S Nagrale
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Shreya Yadav
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
| | - Alik S Widge
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA
- These authors jointly supervised this work
| | - Mahsa Shoaran
- Institute of Electrical and Micro Engineering, EPFL, Lausanne, Switzerland
- Neuro-X Institute, EPFL, Geneva, Switzerland
- These authors jointly supervised this work
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Gao C, He X, Liu Y, Liu J, Jiang Z, Zhu B, Qin X, Xia Y, Zhang T, Wang P, Zhang R, Onuma Y, Xia J, Wang D, Serruys P, Tao L. Drug-coated balloon angioplasty with provisional stenting versus primary stenting for the treatment of de novo coronary artery lesions: REC-CAGEFREE I trial rationale and design. BMC Cardiovasc Disord 2024; 24:319. [PMID: 38914951 PMCID: PMC11194892 DOI: 10.1186/s12872-024-03974-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 06/10/2024] [Indexed: 06/26/2024] Open
Abstract
BACKGROUND Percutaneous coronary intervention (PCI) with primary stenting, which stands for stent implantation regardless of obtaining satisfactory results with balloon angioplasty, has superseded conventional plain old balloon angioplasty with provisional stenting. With drug-coated balloon (DCB), primary DCB angioplasty with provisional stenting has shown non-inferiority to primary stenting for de novo coronary small vessel disease. However, the long-term efficacy and safety of such a strategy to the primary stenting on clinical endpoints in de novo lesions without vessel diameter restrictions remain uncertain. STUDY DESIGN The REC-CAGEFREE I is an investigator-initiated, multicenter, randomized, open-label trial aimed to enroll 2270 patients with acute or chronic coronary syndrome from 43 interventional cardiology centers in China to evaluate the non-inferiority of primary paclitaxel-coated balloons angioplasty to primary stenting for the treatment of de novo, non-complex lesions without vessel diameter restrictions. Patients who fulfill all the inclusion and exclusion criteria and have achieved a successful lesion pre-dilatation will be randomly assigned to the two arms in a 1:1 ratio. Protocol-guided DCB angioplasty and bailout stenting after unsatisfactory angioplasty are mandatory in the primary DCB angioplasty group. The second-generation sirolimus-eluting stent will be used as a bailout stent in the primary DCB angioplasty group and the treatment device in the primary stenting group. The primary endpoint is the incidence of Device-oriented Composite Endpoint (DoCE) within 24 months after randomization, including cardiac death, target vessel myocardial infarction, and clinically and physiologically indicated target lesion revascularization. DISCUSSION The ongoing REC-CAGEFREE I trial is the first randomized trial with a clinical endpoint to assess the efficacy and safety of primary DCB angioplasty for the treatment of de novo, non-complex lesions without vessel diameter restrictions. If non-inferiority is shown, PCI with primary DCB angioplasty could be an alternative treatment option to primary stenting. TRIAL REGISTRATION Registered on clinicaltrial.gov (NCT04561739).
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Affiliation(s)
- Chao Gao
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China.
| | - Xingqiang He
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Yunpeng Liu
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Jianzheng Liu
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Zhiwei Jiang
- Department of Statistics, Air Force Medical University, Xi'an, 710000, China
| | - Bin Zhu
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Xing Qin
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Yunlong Xia
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Tingting Zhang
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Ping Wang
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Ruining Zhang
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China
| | - Yoshinobu Onuma
- Department of Cardiology, University of Galway, Galway, H91 TK33, Ireland
| | - Jielai Xia
- Department of Statistics, Air Force Medical University, Xi'an, 710000, China
| | - Duolao Wang
- Biostatistics Unit, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Patrick Serruys
- Department of Cardiology, University of Galway, Galway, H91 TK33, Ireland
| | - Ling Tao
- Department of Cardiology, Xijing Hospital, Xi'an, 710032, China.
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Sun Y, Sun J, Chen X, Wang Y, Gao X. EEG signatures of cognitive decline after mild SARS-CoV-2 infection: an age-dependent study. BMC Med 2024; 22:257. [PMID: 38902696 PMCID: PMC11188525 DOI: 10.1186/s12916-024-03481-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024] Open
Abstract
BACKGROUND Current research on the neurological impact of SARS-CoV-2 primarily focuses on the elderly or severely ill individuals. This study aims to explore the diverse neurological consequences of SARS-CoV-2 infection, with a particular focus on mildly affected children and adolescents. METHODS A cohort study was conducted to collect pre- and post-infection resting-state electroencephalogram (EEG) data from 185 participants and 181 structured questionnaires of long-term symptoms across four distinct age groups. The goal was to comprehensively evaluate the impact of SARS-CoV-2 infection on these different age demographics. The study analyzed EEG changes of SARS-CoV-2 by potential biomarkers across age groups using both spatial and temporal approaches. RESULTS Spatial analysis indicated that children and adolescents exhibit smaller changes in brain network and microstate patterns post-infection, implying a milder cognitive impact. Sequential linear analyses showed that SARS-CoV-2 infection is associated with a marked rise in low-complexity, synchronized neural activity within low-frequency EEG bands. This is evidenced by a significant increase in Hjorth activity within the theta band and Hjorth mobility in the delta band. Sequential nonlinear analysis indicated a significant reduction in the Hurst exponent across all age groups, pointing to increased chaos and complexity within the cognitive system following infection. Furthermore, linear regression analysis based on questionnaires established a significant positive relationship between the magnitude of changes in these neural indicators and the persistence of long-term symptoms post-infection. CONCLUSIONS The findings underscore the enduring neurological impacts of SARS-CoV-2 infection, marked by cognitive decline and increased EEG disarray. Although children and adolescents experienced milder effects, cognitive decline and heightened low-frequency electrical activity were evident. These observations might contribute to understanding potential anxiety, insomnia, and neurodevelopmental implications.
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Affiliation(s)
- Yike Sun
- The School of Biomedical Engineering, Tsinghua University, Beijing, 100084, China
| | - Jingnan Sun
- The School of Biomedical Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiaogang Chen
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Yijun Wang
- Institute of Semiconductor, Chinese Academy of Sciences, Beijing, 100083, China
| | - Xiaorong Gao
- The School of Biomedical Engineering, Tsinghua University, Beijing, 100084, China.
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Mariello M, Binetti E, Todaro MT, Qualtieri A, Brunetti V, Siciliano P, De Vittorio M, Blasi L. Eco-Friendly Production of Polyvinyl Alcohol/Carboxymethyl Cellulose Wound Healing Dressing Containing Sericin. Gels 2024; 10:412. [PMID: 38920958 PMCID: PMC11202596 DOI: 10.3390/gels10060412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024] Open
Abstract
Wound dressing production represents an important segment in the biomedical healthcare field, but finding a simple and eco-friendly method that combines a natural compound and a biocompatible dressing production for biomedical application is still a challenge. Therefore, the aim of this study is to develop wound healing dressings that are environmentally friendly, low cost, and easily produced, using natural agents and a physical crosslinking technique. Hydrogel wound healing dressings were prepared from polyvinyl alcohol/carboxymethyl cellulose and sericin using the freeze-thawing method as a crosslinking method. The morphological characterization was carried out by scanning electron microscopy (SEM), whereas the mechanical analysis was carried out by dynamic mechanical analysis (DMA) to test the tensile strength and compression properties. Then, the healing property of the wound dressing material was tested by in vitro and ex vivo tests. The results show a three-dimensional microporous structure with no cytotoxicity, excellent stretchability with compressive properties similar to those of human skin, and excellent healing properties. The proposed hydrogel dressing was tested in vitro with HaCaT keratinocytes and ex vivo with epidermal tissues, demonstrating an effective advantage on wound healing acceleration. Accordingly, this study was successful in developing wound healing dressings using natural agents and a simple and green crosslinking method.
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Affiliation(s)
- Massimo Mariello
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
- Dipartimento Ingegneria dell’Innovazione, Università del Salento, via Monteroni, 73100 Lecce, Italy
| | - Enrico Binetti
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
- Institute for Microelectronics and Microsystems IMM-CNR, UOS di Lecce Via Monteroni c/o Campus Universitario Ecotekne-Palazzina A3, 73100 Lecce, Italy
| | - Maria Teresa Todaro
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
- Institute of Nanotechnology NANOTEC-CNR, c/o Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy
| | - Antonio Qualtieri
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
| | - Virgilio Brunetti
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
| | - Pietro Siciliano
- Institute for Microelectronics and Microsystems IMM-CNR, UOS di Lecce Via Monteroni c/o Campus Universitario Ecotekne-Palazzina A3, 73100 Lecce, Italy
| | - Massimo De Vittorio
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
- Dipartimento Ingegneria dell’Innovazione, Università del Salento, via Monteroni, 73100 Lecce, Italy
| | - Laura Blasi
- Center for Biomolecular Nanotechnologies, Italian Institute of Technology, 73100 Lecce, Italy; (M.M.)
- Institute for Microelectronics and Microsystems IMM-CNR, UOS di Lecce Via Monteroni c/o Campus Universitario Ecotekne-Palazzina A3, 73100 Lecce, Italy
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Aventaggiato M, Arcangeli T, Vernucci E, Barreca F, Sansone L, Pellegrini L, Pontemezzo E, Valente S, Fioravanti R, Russo MA, Mai A, Tafani M. Pharmacological Activation of SIRT3 Modulates the Response of Cancer Cells to Acidic pH. Pharmaceuticals (Basel) 2024; 17:810. [PMID: 38931477 DOI: 10.3390/ph17060810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Cancer cells modulate their metabolism, creating an acidic microenvironment that, in turn, can favor tumor progression and chemotherapy resistance. Tumor cells adopt strategies to survive a drop in extracellular pH (pHe). In the present manuscript, we investigated the contribution of mitochondrial sirtuin 3 (SIRT3) to the adaptation and survival of cancer cells to a low pHe. SIRT3-overexpressing and silenced breast cancer cells MDA-MB-231 and human embryonic kidney HEK293 cells were grown in buffered and unbuffered media at pH 7.4 and 6.8 for different times. mRNA expression of SIRT3 and CAVB, was measured by RT-PCR. Protein expression of SIRT3, CAVB and autophagy proteins was estimated by western blot. SIRT3-CAVB interaction was determined by immunoprecipitation and proximity ligation assays (PLA). Induction of autophagy was studied by western blot and TEM. SIRT3 overexpression increases the survival of both cell lines. Moreover, we demonstrated that SIRT3 controls intracellular pH (pHi) through the regulation of mitochondrial carbonic anhydrase VB (CAVB). Interestingly, we obtained similar results by using MC2791, a new SIRT3 activator. Our results point to the possibility of modulating SIRT3 to decrease the response and resistance of tumor cells to the acidic microenvironment and ameliorate the effectiveness of anticancer therapy.
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Affiliation(s)
- Michele Aventaggiato
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Tania Arcangeli
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Enza Vernucci
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Federica Barreca
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Luigi Sansone
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Via di Val Cannuta 247, 00166 Rome, Italy
- Laboratory of Cellular and Molecular Pathology, IRCCS San Raffaele Rome, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Laura Pellegrini
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Elena Pontemezzo
- European Hospital, New Fertility Group, Center for Reproductive Medicine, Via Portuense 700, 00149 Rome, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Rossella Fioravanti
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Matteo Antonio Russo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Via di Val Cannuta 247, 00166 Rome, Italy
- Laboratory of Cellular and Molecular Pathology, IRCCS San Raffaele Rome, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Marco Tafani
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
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Huang K, Wang Q, Rong X, Wu T, Ding C, Meng Y, Yin W, Liu H, Wang B. Biomechanical Effects on the Prostheses and Vertebrae of Three-Level Hybrid Surgery: A Finite Element Study. Orthop Surg 2024. [PMID: 38898370 DOI: 10.1111/os.14125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
PURPOSE Three-level hybrid surgery (HS) consisting of cervical disc arthroplasty (CDA) and anterior cervical discectomy and fusion (ACDF) has been partly used for the treatment of multi-level cervical degenerative disc disease (CDDD). The complications related to the implants and the collapse of the surgical vertebral bodies had been reported in multi-level anterior cervical spine surgery. Thus, this study aimed to explore the biomechanical effects on the prostheses and vertebrae in three-level HS. METHODS A FE model of cervical spine (C0-T1) was constructed. Five surgical models were developed. They were FAF model (ACDF-CDA-ACDF), AFA model (CDA-ACDF-CDA), FFF model (three-level ACDF), SF model (single-level ACDF), and SA model (single-level CDA). A 75-N follower load and 1.0-N·m moment was applied to produce flexion, extension, lateral bending, and axial rotation. RESULTS Compared with the intact model, the range of motion (ROM) of total cervical spine in FAF model decreased by 34.54%, 54.48%, 31.76%, and 27.14%, respectively, in flexion, extension, lateral bending, and axial rotation, which were lower than those in FFF model and higher than those in AFA model. The ROMs of CDA segments in FAF and AFA models were similar to the intact model and SA model. Compared with the intact model, the ROMs at C3/4 segment in FFF model increased from 5.71% to 7.85%, and increased from 5.31% to 6.81% at C7/T1 segment, following by FAF model, then the FAF model. The maximum interface pressures of the Prestige-LP in FAF model were similar to SA model, however the corresponding values were increased in AFA model. The maximum interface pressures of the Zero-P were increased in FAF and AFA model compared with those in SF and FFF models. The stress was mainly distributed on the screws. In AFA model, the maximum pressures of the ball and trough articulation in superior and inferior Prestige-LP were all increased compared with those in SA and FAF model. In FFF model, the maximum pressures of the vertebrae were higher than those in other models. The stress was mainly distributed on the anterior area of the vertebral bodies. CONCLUSIONS HS seemed to be more suitable than ACDF for the surgical treatment of three-level CDDD in consideration of the biomechanical effects, especially for the two-level CDA and one-level ACDF construct. But a more appropriate CDA prosthesis should be explored in the future.
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Affiliation(s)
- Kangkang Huang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Qian Wang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
- Department of Critical Care Medicine, Affiliated Hospital of Chengdu University, Chengdu, China
| | - Xin Rong
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Tingkui Wu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Chen Ding
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Meng
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Wanhong Yin
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Liu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Beiyu Wang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
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Chen C, Wang B, Zhao X, Luo Y, Fu L, Qi X, Ying Z, Chen L, Wang Q, Sun S, Chen D, Kang P. Lithium Promotes Osteogenesis via Rab11a-Facilitated Exosomal Wnt10a Secretion and β-Catenin Signaling Activation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:30793-30809. [PMID: 38833412 DOI: 10.1021/acsami.4c04199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Both bone mesenchymal stem cells (BMSCs) and their exosomes suggest promising therapeutic tools for bone regeneration. Lithium has been reported to regulate BMSC function and engineer exosomes to improve bone regeneration in patients with glucocorticoid-induced osteonecrosis of the femoral head. However, the mechanisms by which lithium promotes osteogenesis have not been elucidated. Here, we demonstrated that lithium promotes the osteogenesis of BMSCs via lithium-induced increases in the secretion of exosomal Wnt10a to activate Wnt/β-catenin signaling, whose secretion is correlated with enhanced MARK2 activation to increase the trafficking of the Rab11a and Rab11FIP1 complexes together with exosomal Wnt10a to the plasma membrane. Then, we compared the proosteogenic effects of exosomes derived from lithium-treated or untreated BMSCs (Li-Exo or Con-Exo) both in vitro and in vivo. We found that, compared with Con-Exo, Li-Exo had superior abilities to promote the uptake and osteogenic differentiation of BMSCs. To optimize the in vivo application of these hydrogels, we fabricated Li-Exo-functionalized gelatin methacrylate (GelMA) hydrogels, which are more effective at promoting osteogenesis and bone repair than Con-Exo. Collectively, these findings demonstrate the mechanism by which lithium promotes osteogenesis and the great promise of lithium for engineering BMSCs and their exosomes for bone regeneration, warranting further exploration in clinical practice.
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Affiliation(s)
- Changjun Chen
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan 250014, China
| | - Baoning Wang
- Department of Microbiology, West China of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Xin Zhao
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - Yue Luo
- Department of Orthopedic Surgery, North Sichuan Medical College, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
| | - Li Fu
- Research Core Facility, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xin Qi
- Department of Neurosurgery and Neurosurgery Research Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhendong Ying
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan 250014, China
| | - Liyile Chen
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiuru Wang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shuo Sun
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dailing Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan 250014, China
| | - Pengde Kang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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49
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Lin YC, Hu CC, Liu WC, Dhawan U, Chen YC, Lee YL, Yen HW, Kuo YJ, Chung RJ. Hydrogen-treated CoCrMo alloy: a novel approach to enhance biocompatibility and mitigate inflammation in orthopedic implants. J Mater Chem B 2024. [PMID: 38895823 DOI: 10.1039/d4tb00725e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
In recent decades, orthopedic implants have been widely used as materials to replace human bone tissue functions. Among these, metal implants play a crucial role. Metals with better chemical stability, such as stainless steel, titanium alloys, and cobalt-chromium-molybdenum (CoCrMo) alloy, are commonly used for long-term applications. However, good chemical stability can result in poor tissue integration between the tissue and the implant, leading to potential inflammation risks. This study creates hydrogenated CoCrMo (H-CoCrMo) surfaces, which have shown promise as anti-inflammatory orthopedic implants. Using the electrochemical cathodic hydrogen-charging method, the surface of the CoCrMo alloy was hydrogenated, resulting in improved biocompatibility, reduced free radicals, and an anti-inflammatory response. Hydrogen diffusion to a depth of approximately 106 ± 27 nm on the surface facilitated these effects. This hydrogen-rich surface demonstrated a reduction of 85.2% in free radicals, enhanced hydrophilicity as evidenced by a decrease in a contact angle from 83.5 ± 1.9° to 52.4 ± 2.2°, and an increase of 11.4% in hydroxyapatite deposition surface coverage. The cell study results revealed a suppression of osteosarcoma cell activity to 50.8 ± 2.9%. Finally, the in vivo test suggested the promotion of new bone formation and a reduced inflammatory response. These findings suggest that electrochemical hydrogen charging can effectively modify CoCrMo surfaces, offering a potential solution for improving orthopedic implant outcomes through anti-inflammatory mechanisms.
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Affiliation(s)
- Yu-Chien Lin
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan.
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Chih-Chien Hu
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Linko, Taiwan
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Linko, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wai-Ching Liu
- Department of Food and Health Sciences, Technological and Higher Education Institute of Hong Kong, New Territories, Hong Kong, China
| | - Udesh Dhawan
- Centre for the Cellular Microenvironment, Division of Biomedical Engineering, James Watt School of Engineering, Mazumdar-Shaw Advanced Research Centre, University of Glasgow, Glasgow, UK
| | - Yu-Chieh Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan.
| | - Yueh-Lien Lee
- Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan
| | - Hung-Wei Yen
- Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan.
| | - Yi-Jie Kuo
- Department of Orthopedic Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
- Department of Orthopedic Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ren-Jei Chung
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan.
- High-value Biomaterials Research and Commercialization Center, National Taipei University of Technology (Taipei Tech), Taipei 10608, Taiwan
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50
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Wang G, Wu J, Li Z, Chen T, Liu Y, Wang B, Chen Y, She Z. Talaroacids A-D and Talaromarane A, Diterpenoids with Anti-Inflammatory Activities from Mangrove Endophytic Fungus Talaromyces sp. JNQQJ-4. Int J Mol Sci 2024; 25:6691. [PMID: 38928398 PMCID: PMC11204306 DOI: 10.3390/ijms25126691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Five new diterpenes including four diterpenes with 1,2,3,4,4a,5,6,8a-octalin skeleton talaroacids A-D (1-4) and an isopimarane diterpenoid talaromarane A (5) were isolated from the mangrove endophytic fungus Talaromyces sp. JNQQJ-4. Their structures and absolute configurations were determined by analysis of high-resolution electrospray ionization mass spectroscopy (HRESIMS), 1D/2D Nuclear Magnetic Resonance (NMR) spectra, single-crystal X-ray diffraction, quantum chemical calculation, and electronic circular dichroism (ECD). Talaromarane A (5) contains a rare 2-oxabicyclo [3.2.1] octan moiety in isopimarane diterpenoids. In bioassays, compounds 1, 2, 4, and 5 displayed significant anti-inflammatory activities with the IC50 value from 4.59 to 21.60 μM.
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Affiliation(s)
- Guisheng Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
| | - Jianying Wu
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
| | - Zhaokun Li
- School of Pharmacy, Anhui Medical University, Hefei 230032, China;
| | - Tao Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
| | - Yufeng Liu
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
| | - Bo Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
| | - Yan Chen
- School of Pharmacy, Anhui Medical University, Hefei 230032, China;
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China; (G.W.); (J.W.); (T.C.); (Y.L.); (B.W.)
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