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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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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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53
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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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54
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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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Pontiggia A, Fabries P, Beauchamps V, Quiquempoix M, Nespoulous O, Jacques C, Guillard M, Van Beers P, Ayounts H, Koulmann N, Gomez-Merino D, Chennaoui M, Sauvet F. Combined Effects of Moderate Hypoxia and Sleep Restriction on Mental Workload. Clocks Sleep 2024; 6:338-358. [PMID: 39189191 PMCID: PMC11348049 DOI: 10.3390/clockssleep6030024] [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: 05/20/2024] [Revised: 07/09/2024] [Accepted: 07/17/2024] [Indexed: 08/28/2024] Open
Abstract
Aircraft pilots face a high mental workload (MW) under environmental constraints induced by high altitude and sometimes sleep restriction (SR). Our aim was to assess the combined effects of hypoxia and sleep restriction on cognitive and physiological responses to different MW levels using the Multi-Attribute Test Battery (MATB)-II with an additional auditory Oddball-like task. Seventeen healthy subjects were subjected in random order to three 12-min periods of increased MW level (low, medium, and high): sleep restriction (SR, <3 h of total sleep time (TST)) vs. habitual sleep (HS, >6 h TST), hypoxia (HY, 2 h, FIO2 = 13.6%, ~3500 m vs. normoxia, NO, FIO2 = 21%). Following each MW level, participants completed the NASA-TLX subjective MW scale. Increasing MW decreases performance on the MATB-II Tracking task (p = 0.001, MW difficulty main effect) and increases NASA-TLX (p = 0.001). In the combined HY/SR condition, MATB-II performance was lower, and the NASA-TLX score was higher compared with the NO/HS condition, while no effect of hypoxia alone was observed. In the accuracy of the auditory task, there is a significant interaction between hypoxia and MW difficulty (F(2-176) = 3.14, p = 0.04), with lower values at high MW under hypoxic conditions. Breathing rate, pupil size, and amplitude of pupil dilation response (PDR) to auditory stimuli are associated with increased MW. These parameters are the best predictors of increased MW, independently of physiological constraints. Adding ECG, SpO2, or electrodermal conductance does not improve model performance. In conclusion, hypoxia and sleep restriction have an additive effect on MW. Physiological and electrophysiological responses must be taken into account when designing a MW predictive model and cross-validation.
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Affiliation(s)
- Anaïs Pontiggia
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Pierre Fabries
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- École du Val-de-Grâce (EVDG), 75005 Paris, France
| | - Vincent Beauchamps
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
- École du Val-de-Grâce (EVDG), 75005 Paris, France
| | - Michael Quiquempoix
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Olivier Nespoulous
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
| | - Clémentine Jacques
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
- Laboratoire Theresis, THALES SIX GTS, 91190 Palaiseau, France
| | - Mathias Guillard
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Pascal Van Beers
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Haïk Ayounts
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | | | - Danielle Gomez-Merino
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Mounir Chennaoui
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
| | - Fabien Sauvet
- Armed Forces Biomedical Research Institute (IRBA), 91220 Brétigny-sur-Orge, France; (A.P.); (H.A.)
- URP 7330 VIFASOM, Université Paris Cité, 75004 Paris, France
- École du Val-de-Grâce (EVDG), 75005 Paris, France
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Cai Y, Guo M, Wang C, Lu X, Zeng X, Sun Y, Ai Y, Xu S, Li J. TTFDNet: Precise Depth Estimation from Single-Frame Fringe Patterns. SENSORS (BASEL, SWITZERLAND) 2024; 24:4733. [PMID: 39066131 PMCID: PMC11280829 DOI: 10.3390/s24144733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/17/2024] [Accepted: 07/19/2024] [Indexed: 07/28/2024]
Abstract
This work presents TTFDNet, a transformer-based and transfer learning network for end-to-end depth estimation from single-frame fringe patterns in fringe projection profilometry. TTFDNet features a precise contour and coarse depth (PCCD) pre-processor, a global multi-dimensional fusion (GMDF) module and a progressive depth extractor (PDE). It utilizes transfer learning through fringe structure consistency evaluation (FSCE) to leverage the transformer's benefits even on a small dataset. Tested on 208 scenes, the model achieved a mean absolute error (MAE) of 0.00372 mm, outperforming Unet (0.03458 mm) models, PDE (0.01063 mm) and PCTNet (0.00518 mm). It demonstrated precise measurement capabilities with deviations of ~90 μm for a 25.4 mm radius ball and ~6 μm for a 20 mm thick metal part. Additionally, TTFDNet showed excellent generalization and robustness in dynamic reconstruction and varied imaging conditions, making it appropriate for practical applications in manufacturing, automation and computer vision.
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Grants
- 62075138, 92050203, 62275163, and 12174264 National Natural Science Foundation of China
- 2021A1515011909 and 2022A1515011457 Natural Science Foundation of Guangdong Province
- ZDSYS20210623092006020 Shenzhen Key Laboratory of Photonics and Biophotonics
- JCYJ20190808121817100, JCYJ20190808164007485, JCYJ20210324 095213037, JCYJ20190808143419622, JSGG20191231144201722, and JCYJ20190808115601653, JSGG20211108092800001, JSGG20220831110601002 and JCYJ20190808115601653 Shenzhen Fundamental Research Program
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Affiliation(s)
| | | | | | - Xiaowei Lu
- Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen Key Lab of Micro-Nano Photonic Information Technology, State Key Laboratory of Radio Frequency Heterogeneous Integration, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, 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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58
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Salih T, Caputo M, Ghorbel MT. Recent Advances in Hydrogel-Based 3D Bioprinting and Its Potential Application in the Treatment of Congenital Heart Disease. Biomolecules 2024; 14:861. [PMID: 39062575 PMCID: PMC11274841 DOI: 10.3390/biom14070861] [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: 05/15/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024] Open
Abstract
Congenital heart disease (CHD) is the most common birth defect, requiring invasive surgery often before a child's first birthday. Current materials used during CHD surgery lack the ability to grow, remodel, and regenerate. To solve those limitations, 3D bioprinting is an emerging tool with the capability to create tailored constructs based on patients' own imaging data with the ability to grow and remodel once implanted in children with CHD. It has the potential to integrate multiple bioinks with several cell types and biomolecules within 3D-bioprinted constructs that exhibit good structural fidelity, stability, and mechanical integrity. This review gives an overview of CHD and recent advancements in 3D bioprinting technologies with potential use in the treatment of CHD. Moreover, the selection of appropriate biomaterials based on their chemical, physical, and biological properties that are further manipulated to suit their application are also discussed. An introduction to bioink formulations composed of various biomaterials with emphasis on multiple cell types and biomolecules is briefly overviewed. Vasculogenesis and angiogenesis of prefabricated 3D-bioprinted structures and novel 4D printing technology are also summarized. Finally, we discuss several restrictions and our perspective on future directions in 3D bioprinting technologies in the treatment of CHD.
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Affiliation(s)
- Tasneem Salih
- Bristol Heart Institute, Bristol Medical School, University of Bristol, Bristol BS2 8HW, UK; (T.S.); (M.C.)
| | - Massimo Caputo
- Bristol Heart Institute, Bristol Medical School, University of Bristol, Bristol BS2 8HW, UK; (T.S.); (M.C.)
- Cardiac Surgery, University Hospitals Bristol, NHS Foundation Trust, Bristol BS2 8HW, UK
| | - Mohamed T. Ghorbel
- Bristol Heart Institute, Bristol Medical School, University of Bristol, Bristol BS2 8HW, UK; (T.S.); (M.C.)
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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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60
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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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Cui Z, Liu X, Qu H, Wang H. Technical Principles and Clinical Applications of Electrical Impedance Tomography in Pulmonary Monitoring. SENSORS (BASEL, SWITZERLAND) 2024; 24:4539. [PMID: 39065936 PMCID: PMC11281055 DOI: 10.3390/s24144539] [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: 03/18/2024] [Revised: 06/11/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024]
Abstract
Pulmonary monitoring is crucial for the diagnosis and management of respiratory conditions, especially after the epidemic of coronavirus disease. Electrical impedance tomography (EIT) is an alternative non-radioactive tomographic imaging tool for monitoring pulmonary conditions. This review proffers the current EIT technical principles and applications on pulmonary monitoring, which gives a comprehensive summary of EIT applied on the chest and encourages its extensive usage to clinical physicians. The technical principles involving EIT instrumentations and image reconstruction algorithms are explained in detail, and the conditional selection is recommended based on clinical application scenarios. For applications, specifically, the monitoring of ventilation/perfusion (V/Q) is one of the most developed EIT applications. The matching correlation of V/Q could indicate many pulmonary diseases, e.g., the acute respiratory distress syndrome, pneumothorax, pulmonary embolism, and pulmonary edema. Several recently emerging applications like lung transplantation are also briefly introduced as supplementary applications that have potential and are about to be developed in the future. In addition, the limitations, disadvantages, and developing trends of EIT are discussed, indicating that EIT will still be in a long-term development stage before large-scale clinical applications.
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Affiliation(s)
- Ziqiang Cui
- School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China; (X.L.); (H.Q.); (H.W.)
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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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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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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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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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Pohanka M, Keresteš O, Žáková J. A 3D-Printed Do-It-Yourself ELISA Plate Reader as a Biosensor Tested on TNFα Assay. BIOSENSORS 2024; 14:331. [PMID: 39056607 PMCID: PMC11274727 DOI: 10.3390/bios14070331] [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: 05/28/2024] [Revised: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024]
Abstract
Simple analytical devices suitable for the analysis of various biochemical and immunechemical markers are highly desirable and can provide laboratory diagnoses outside standard hospitals. This study focuses on constructing an easily reproducible do-it-yourself ELISA plate reader biosensor device, assembled from generally available and inexpensive parts. The colorimetric biosensor was based on standard 96-well microplates, 3D-printed parts, and a smartphone camera as a detector was utilized here as a tool to replace the ELISA method, and its function was illustrated in the assay of TNFα as a model immunochemical marker. The assay provided a limit of detection of 19 pg/mL when the B channel of the RGB color model was used for calibration. The assay was well correlated with the ELISA method, and no significant matrix effect was observed for standard biological samples or interference of proteins expected in a sample. The results of this study will inform the development of simple analytical devices easily reproducible by 3D printing and found on generally available electronics.
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Affiliation(s)
- Miroslav Pohanka
- Military Faculty of Medicine, University of Defence, Trebesska 1575, CZ-50001 Hradec Kralove, Czech Republic; (O.K.)
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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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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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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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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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Kasahara S, Ishida T, Linjing J, Chiba A, Samukawa M, Tohyama H. Relationship among the COM Motion, the Lower Extremity and the Trunk during the Squat. J Hum Kinet 2024; 93:29-39. [PMID: 39132411 PMCID: PMC11307177 DOI: 10.5114/jhk/183066] [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] [Received: 03/25/2023] [Accepted: 01/24/2024] [Indexed: 08/13/2024] Open
Abstract
Squatting is a common motion in activities of daily living and is frequently used in training programs. Squatting requires a shift of the body in both vertical and anterior-posterior directions. Postural control during squatting is considered a mixed strategy; however, details and roles of the trunk and lower limb joints are unclear. The purpose of this study was to investigate the relationship among the kinematics of the lower limb, the trunk and the center of mass (COM) descent during squatting. Twenty-six healthy young adults performed repeated parallel squats. Lower limb joint and trunk angles and the COM were analyzed using a 3D motion analysis system. We evaluated the relationship between the kinematics and the squat depth by performing correlation analysis and multiple linear regression analysis. The ankle was the first to reach its maximum angle, and the remaining joints reached their maximum angles at the maximum squat depth. The knee joint motion and the squat depth were significantly correlated and there was a correlation between the hip and the ankle joint motion and the anteroposterior displacement of the COM during squatting. Multivariate linear regression analysis indicated that squat depth was predicted by both the knee and ankle motion and that anteroposterior displacement of the COM was predicted by the hip, ankle, and knee joint motion. The knees contributed to the vertical COM motion during squatting, while the hips contributed to the COM motion in the anteroposterior direction. On the other hand, the ankles contributed to COM motions in both the vertical and anteroposterior directions during squatting.
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Affiliation(s)
- Satoshi Kasahara
- Department of Rehabilitation Sciences, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Tomoya Ishida
- Department of Rehabilitation Sciences, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Jiang Linjing
- Department of Rehabilitation Sciences, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Ami Chiba
- Department of Rehabilitation, Hirosaki University Hospital, Hirosaki, Japan
| | - Mina Samukawa
- Department of Rehabilitation Sciences, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Harukazu Tohyama
- Department of Rehabilitation Sciences, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
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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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80
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Saleem SS, Sabir SM, Abdulla KA. Experimental and Finite Element Analysis of Compressive Strength and Diametral Tensile Strength of Luting Cement: An In Vitro Study. Cureus 2024; 16:e64658. [PMID: 39149653 PMCID: PMC11326503 DOI: 10.7759/cureus.64658] [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: 07/14/2024] [Indexed: 08/17/2024] Open
Abstract
Background Strength parameters greatly influence the selection of luting agents. This study compared the compressive and diametral tensile strengths (DTS) of three luting cements. Materials and methods Three luting cements, conventional glass ionomer (CGI), resin-modified glass ionomer (RMGI), and resin cement (RC), were tested for compressive strength and DTS. Forty-two standardized specimens were prepared, measuring 4 mm by 6 mm for compressive tests and 6 mm by 3 mm for diametral tensile tests. The luting materials were prepared according to the manufacturers' instructions. Result Experimental mean compressive and diametral strengths and standard errors were calculated for each luting agent (n = 10). Analysis of variance was computed (p < 0.05), and multiple comparison tests were performed. RC showed significantly higher compressive strengths and DTS among the three tested luting cements, while the CGI showed the least. The results obtained by finite element analysis (FEA) for both tests closely matched the experimental results. Conclusion In this study, it was concluded that the mean compressive strength and DTS values of all three luting cements were significantly different. The resin luting cement exhibited the highest compressive strength and DTS, while the CGI exhibited the least.
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Affiliation(s)
- Sazan S Saleem
- Department of Pedodontics, Orthodontics, and Preventive Dentistry, College of Dentistry of Hawler Medical University, Erbil, IRQ
| | - Sazgar M Sabir
- Department of Pedodontics, Orthodontics, and Preventive Dentistry, College of Dentistry of Hawler Medical University, Erbil, IRQ
| | - Kareem A Abdulla
- Department of Mechanical and Mechatronics, College of Engineering, Salahaddin University Erbil, Erbil, IRQ
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81
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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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82
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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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83
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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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Caballero C, Rodriguez F, Cortellari GC, Scarano A, Prados-Frutos JC, De Aza PN, Fernandes GVO, Gehrke SA. Mechanical Behavior of Five Different Morse Taper Implants and Abutments with Different Conical Internal Connections and Angles: An In Vitro Experimental Study. J Funct Biomater 2024; 15:177. [PMID: 39057299 PMCID: PMC11277867 DOI: 10.3390/jfb15070177] [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: 05/07/2024] [Revised: 06/20/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
The present study evaluated the mechanical behavior of five designs of Morse taper (MT) connections with and without the application of loads. For this, the detorque of the fixing screw and the traction force required to disconnect the abutment from the implant were assessed. A total of 100 sets of implants/abutments (IAs) with MT-type connections were used, comprising five groups (n = 20/group): (1) Group Imp 11.5: IA sets with a cone angulation of 11.5°; (2) Group SIN 11.5: with a cone angulation of 11.5°; (3) Group SIN 16: with a cone angulation of 16°; (4) Group Neo 16: with a cone angulation of 16°; and (5) Group Str 15: with a cone angulation of 15°. All sets received the torque recommended by the manufacturer. After applying the torque, the counter torque of the fixing screws was measured in ten IA sets of each group without the application of cyclic loads (frequencies ≤ 2 Hz, 360,000 cycles, and force at 150 Ncm). The other ten sets of each group were subjected to cyclic loads, after which the detorque was measured. Afterwards, the force for disconnection between the implant and the abutment was measured by traction on all the samples. The untwisting of the abutment fixation screws showed a decrease in relation to the initial torque applied in all groups. In the unloaded samples, it was found to be -25.7% in Group 1, -30.4% in Group 2, -36.8% in Group 3, -29.6% in Group 4, and -25.7% in Group 5. After the applied loads, it was found to be -44% in Group 1, -43.5% in Group 2, -48.5% in Group 3, -47.2% in Group 4, and -49.8% in Group 5. The values for the IA sets were zero for SIN 16 (Group 3) and Neo16 (Group 4), both without and with loads. In the other three groups, without loads, the disconnection value was 56.3 ± 2.21 N (Group 1), 30.7 ± 2.00 N (Group 2), and 26.0 ± 2.52 N (Group 5). After applying loads, the values were 63.5 ± 3.06 N for Group 1, 34.2 ± 2.45 N in Group 2, and 23.1 ± 1.29 N in Group 5. It was concluded that in terms of the mechanical behavior of the five designs of MT IA sets, with and without the application of loads, the Imp 11.5, SIN 11.5, and Srt 15 groups showed better results compared to the SIN 16 and Neo 16 groups, showing that lower values of cone angulation increase the friction between the parts (IA), thus avoiding the need to maintain the torque of the fixing screw to maintain the union of the sets.
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Affiliation(s)
- Claudia Caballero
- Department of Implantology, Bioface/Postgrados en Odontología/Universidad Catolica de Murcia, 11100 Montevideo, Uruguay; (C.C.); (F.R.); (G.C.C.)
| | - Fernando Rodriguez
- Department of Implantology, Bioface/Postgrados en Odontología/Universidad Catolica de Murcia, 11100 Montevideo, Uruguay; (C.C.); (F.R.); (G.C.C.)
| | - Guillermo Castro Cortellari
- Department of Implantology, Bioface/Postgrados en Odontología/Universidad Catolica de Murcia, 11100 Montevideo, Uruguay; (C.C.); (F.R.); (G.C.C.)
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, 66013 Chieti, Italy;
| | - Juan Carlos Prados-Frutos
- Department of Medical Specialties and Public Health, IDIBO Group (High Performance Group in Research and Development of Biomaterials in Dentistry), Rey Juan Carlos University, 28300 Madrid, Spain;
| | - Piedad N. De Aza
- Department of Bioengineering, Universidad Miguel Hernandez de Elche, 03202 Alicante, Spain;
| | | | - Sergio Alexandre Gehrke
- Department of Implantology, Bioface/Postgrados en Odontología/Universidad Catolica de Murcia, 11100 Montevideo, Uruguay; (C.C.); (F.R.); (G.C.C.)
- Department of Bioengineering, Universidad Miguel Hernandez de Elche, 03202 Alicante, Spain;
- Department of Biotechnology, Universidad Católica de Murcia (UCAM), 30107 Murcia, Spain
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85
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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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Hanna M, Ali A, Bhatambarekar P, Modi K, Lee C, Morrison B, Klienberger M, Pfister BJ. Anatomical Features and Material Properties of Human Surrogate Head Models Affect Spatial and Temporal Brain Motion under Blunt Impact. Bioengineering (Basel) 2024; 11:650. [PMID: 39061732 PMCID: PMC11273380 DOI: 10.3390/bioengineering11070650] [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: 06/06/2024] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 07/28/2024] Open
Abstract
Traumatic brain injury (TBI) is a biomechanical problem where the initiating event is dynamic loading (blunt, inertial, blast) to the head. To understand the relationship between the mechanical parameters of the injury and the deformation patterns in the brain, we have previously developed a surrogate head (SH) model capable of measuring spatial and temporal deformation in a surrogate brain under blunt impact. The objective of this work was to examine how material properties and anatomical features affect the motion of the brain and the development of injurious deformations. The SH head model was modified to study six variables independently under blunt impact: surrogate brain stiffness, surrogate skull stiffness, inclusion of cerebrospinal fluid (CSF), head/skull size, inclusion of vasculature, and neck stiffness. Each experimental SH was either crown or frontally impacted at 1.3 m/s (3 mph) using a drop tower system. Surrogate brain material, the Hybrid III neck stiffness, and skull stiffness were measured and compared to published properties. Results show that the most significant variables affecting changes in brain deformation are skull stiffness, inclusion of CSF and surrogate brain stiffness. Interestingly, neck stiffness and SH size significantly affected the strain rate only suggesting these parameters are less important in blunt trauma. While the inclusion of vasculature locally created strain concentrations at the interface of the artery and brain, overall deformation was reduced.
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Affiliation(s)
- Michael Hanna
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (M.H.); (A.A.); (P.B.); (K.M.)
| | - Abdus Ali
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (M.H.); (A.A.); (P.B.); (K.M.)
| | - Prasad Bhatambarekar
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (M.H.); (A.A.); (P.B.); (K.M.)
| | - Karan Modi
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (M.H.); (A.A.); (P.B.); (K.M.)
| | - Changhee Lee
- Neurotrauma and Repair Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA; (C.L.)
| | - Barclay Morrison
- Neurotrauma and Repair Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA; (C.L.)
| | - Michael Klienberger
- The Army Research Laboratory, Aberdeen Proving Grounds, Aberdeen, MD 21005, USA;
| | - Bryan J. Pfister
- Center for Injury Biomechanics, Materials and Medicine, Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; (M.H.); (A.A.); (P.B.); (K.M.)
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Mitić D, Čarkić J, Jaćimović J, Lazarević M, Jakšić Karišik M, Toljić B, Milašin J. The Impact of Nano-Hydroxyapatite Scaffold Enrichment on Bone Regeneration In Vivo-A Systematic Review. Biomimetics (Basel) 2024; 9:386. [PMID: 39056827 PMCID: PMC11274561 DOI: 10.3390/biomimetics9070386] [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: 05/14/2024] [Revised: 06/20/2024] [Accepted: 06/22/2024] [Indexed: 07/28/2024] Open
Abstract
OBJECTIVES In order to ensure improved and accelerated bone regeneration, nano-hydroxyapatite scaffolds are often enriched with different bioactive components to further accelerate and improve bone healing. In this review, we critically examined whether the enrichment of nHAp/polymer scaffolds with growth factors, hormones, polypeptides, microRNAs and exosomes improved new bone formation in vivo. MATERIALS AND METHODS Out of 2989 articles obtained from the literature search, 106 papers were read in full, and only 12 articles met the inclusion criteria for this review. RESULTS Several bioactive components were reported to stimulate accelerated bone regeneration in a variety of bone defect models, showing better results than bone grafting with nHAp scaffolds alone. CONCLUSIONS The results indicated that composite materials based on nHAp are excellent candidates as bone substitutes, while nHAp scaffold enrichment further accelerates bone regeneration. The standardization of animal models should be provided in order to clearly define the most significant parameters of in vivo studies. Only in this way can the adequate comparison of findings from different in vivo studies be possible, further advancing our knowledge on bone regeneration and enabling its translation to clinical settings.
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Affiliation(s)
- Dijana Mitić
- School of Dental Medicine, University of Belgrade, 11000 Belgrade, Serbia; (J.Č.); (J.J.); (M.L.); (M.J.K.); (B.T.); (J.M.)
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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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90
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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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91
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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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92
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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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93
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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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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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95
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Liu T, Hao Y, Zhang Z, Zhou H, Peng S, Zhang D, Li K, Chen Y, Chen M. Advanced Cardiac Patches for the Treatment of Myocardial Infarction. Circulation 2024; 149:2002-2020. [PMID: 38885303 PMCID: PMC11191561 DOI: 10.1161/circulationaha.123.067097] [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] [Indexed: 06/20/2024]
Abstract
Myocardial infarction is a cardiovascular disease characterized by a high incidence rate and mortality. It leads to various cardiac pathophysiological changes, including ischemia/reperfusion injury, inflammation, fibrosis, and ventricular remodeling, which ultimately result in heart failure and pose a significant threat to global health. Although clinical reperfusion therapies and conventional pharmacological interventions improve emergency survival rates and short-term prognoses, they are still limited in providing long-lasting improvements in cardiac function or reversing pathological progression. Recently, cardiac patches have gained considerable attention as a promising therapy for myocardial infarction. These patches consist of scaffolds or loaded therapeutic agents that provide mechanical reinforcement, synchronous electrical conduction, and localized delivery within the infarct zone to promote cardiac restoration. This review elucidates the pathophysiological progression from myocardial infarction to heart failure, highlighting therapeutic targets and various cardiac patches. The review considers the primary scaffold materials, including synthetic, natural, and conductive materials, and the prevalent fabrication techniques and optimal properties of the patch, as well as advanced delivery strategies. Last, the current limitations and prospects of cardiac patch research are considered, with the goal of shedding light on innovative products poised for clinical application.
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Affiliation(s)
- Tailuo Liu
- Laboratory of Cardiac Structure and Function, Institute of Cardiovascular Diseases (T.L., Y.H., H.Z., S.P., D.Z., Y.C., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
- Department of Cardiology (T.L., S.P., D.Z., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, PR China (T.L., K.L., Y.C.)
| | - Ying Hao
- Laboratory of Cardiac Structure and Function, Institute of Cardiovascular Diseases (T.L., Y.H., H.Z., S.P., D.Z., Y.C., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
| | - Zixuan Zhang
- West China School of Public Health/West China Fourth Hospital, Sichuan University, Chengdu, PR China (Z.Z.)
| | - Hao Zhou
- Laboratory of Cardiac Structure and Function, Institute of Cardiovascular Diseases (T.L., Y.H., H.Z., S.P., D.Z., Y.C., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
| | - Shiqin Peng
- Department of Cardiology (T.L., S.P., D.Z., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
| | - Dingyi Zhang
- Department of Cardiology (T.L., S.P., D.Z., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
| | - Ka Li
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, PR China (T.L., K.L., Y.C.)
| | - Yuwen Chen
- Medicine and Engineering Interdisciplinary Research Laboratory of Nursing & Materials, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, PR China (T.L., K.L., Y.C.)
| | - Mao Chen
- Department of Cardiology (T.L., S.P., D.Z., M.C.), West China Hospital, Sichuan University, Chengdu, PR China
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Yoshimura H, Kawahara D, Saito A, Ozawa S, Nagata Y. Prediction of prognosis in glioblastoma with radiomics features extracted by synthetic MRI images using cycle-consistent GAN. Phys Eng Sci Med 2024:10.1007/s13246-024-01443-8. [PMID: 38884673 DOI: 10.1007/s13246-024-01443-8] [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: 05/24/2023] [Accepted: 05/14/2024] [Indexed: 06/18/2024]
Abstract
To propose a style transfer model for multi-contrast magnetic resonance imaging (MRI) images with a cycle-consistent generative adversarial network (CycleGAN) and evaluate the image quality and prognosis prediction performance for glioblastoma (GBM) patients from the extracted radiomics features. Style transfer models of T1 weighted MRI image (T1w) to T2 weighted MRI image (T2w) and T2w to T1w with CycleGAN were constructed using the BraTS dataset. The style transfer model was validated with the Cancer Genome Atlas Glioblastoma Multiforme (TCGA-GBM) dataset. Moreover, imaging features were extracted from real and synthesized images. These features were transformed to rad-scores by the least absolute shrinkage and selection operator (LASSO)-Cox regression. The prognosis performance was estimated by the Kaplan-Meier method. For the accuracy of the image quality of the real and synthesized MRI images, the MI, RMSE, PSNR, and SSIM were 0.991 ± 2.10 × 10 - 4 , 2.79 ± 0.16, 40.16 ± 0.38, and 0.995 ± 2.11 × 10 - 4 , for T2w, and .992 ± 2.63 × 10 - 4 , 2.49 ± 6.89 × 10 - 2 , 40.51 ± 0.22, and 0.993 ± 3.40 × 10 - 4 for T1w, respectively. The survival time had a significant difference between good and poor prognosis groups for both real and synthesized T2w (p < 0.05). However, the survival time had no significant difference between good and poor prognosis groups for both real and synthesized T1w. On the other hand, there was no significant difference between the real and synthesized T2w in both good and poor prognoses. The results of T1w were similar in the point that there was no significant difference between the real and synthesized T1w. It was found that the synthesized image could be used for prognosis prediction. The proposed prognostic model using CycleGAN could reduce the cost and time of image scanning, leading to a promotion to build the patient's outcome prediction with multi-contrast images.
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Affiliation(s)
- Hisanori Yoshimura
- Department of Radiation Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
- Department of Radiology, National Hospital Organization Kure Medical Center, Hiroshima, Japan
| | - Daisuke Kawahara
- Department of Radiation Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan.
| | - Akito Saito
- Department of Radiation Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | - Shuichi Ozawa
- Department of Radiation Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, 732-0057, Japan
| | - Yasushi Nagata
- Department of Radiation Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
- Hiroshima High-Precision Radiotherapy Cancer Center, Hiroshima, 732-0057, Japan
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Mendes AX, Caballero Aguilar L, do Nascimento AT, Duchi S, Charnley M, Nisbet DR, Quigley AF, Kapsa RMI, Moraes Silva S, Moulton SE. Integrating Graphene Oxide-Hydrogels and Electrical Stimulation for Controlled Neurotrophic Factor Encapsulation: A Promising Approach for Efficient Nerve Tissue Regeneration. ACS APPLIED BIO MATERIALS 2024; 7:4175-4192. [PMID: 38830774 DOI: 10.1021/acsabm.4c00523] [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] [Indexed: 06/05/2024]
Abstract
Nerve growth factor (NGF) plays a crucial role in cellular growth and neurodifferentiation. To achieve significant neuronal regeneration and repair using in vitro NGF delivery, spatiotemporal control that follows the natural neuronal processes must be developed. Notably, a challenge hindering this is the uncontrolled burst release from the growth factor delivery systems. The rapid depletion of NGF reduces treatment efficacy, leading to poor cellular response. To address this, we developed a highly controllable system using graphene oxygen (GO) and GelMA hydrogels modulated by electrical stimulation. Our system showed superior control over the release kinetics, reducing the burst up 30-fold. We demonstrate that the system is also able to sequester and retain NGF up to 10-times more efficiently than GelMA hydrogels alone. Our controlled release system enabled neurodifferentiation, as revealed by gene expression and immunostaining analysis. The increased retention and reduced burst release from our system show a promising pathway for nerve tissue engineering research toward effective regeneration.
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Affiliation(s)
- Alexandre Xavier Mendes
- ARC Centre of Excellence for Electromaterials Science, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Lilith Caballero Aguilar
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
- The Graeme Clark Institute, Biomedical Engineering Department, Melbourne University, Melbourne, Victoria 3065, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Adriana Teixeira do Nascimento
- ARC Centre of Excellence for Electromaterials Science, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Serena Duchi
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
- Department of Surgery, University of Melbourne, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Mirren Charnley
- Centre for Optical Sciences and Department of Health Sciences and Biostatistics, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Department of Health Sciences and Biostatistics, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Immune Signalling Laboratory, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000 Australia
| | - David R Nisbet
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
- The Graeme Clark Institute, Biomedical Engineering Department, Melbourne University, Melbourne, Victoria 3065, Australia
- Department of Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Science, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Anita F Quigley
- ARC Centre of Excellence for Electromaterials Science, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- School of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria 3001, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Robert M I Kapsa
- ARC Centre of Excellence for Electromaterials Science, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
- School of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria 3001, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Saimon Moraes Silva
- Department of Biochemistry and Chemistry, Biomedical and Environmental Sensor Technology Centre, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Simon E Moulton
- ARC Centre of Excellence for Electromaterials Science, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Melbourne, Victoria 3065, Australia
- Iverson Health Innovation Research Institute, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
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98
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Mu Z, Zhao P, Yang S, Zhuang L, Ding H, Qiu X, Gao B, Liu Y, Gong S, Wang G, Wang Z, Wang X. The Effect of Transverse Sinus Stenosis Caused by Arachnoid Granulation on Patients with Venous Pulsatile Tinnitus: A Multiphysics Interaction Simulation Investigation. Bioengineering (Basel) 2024; 11:612. [PMID: 38927848 PMCID: PMC11200363 DOI: 10.3390/bioengineering11060612] [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: 04/25/2024] [Revised: 05/24/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
This study aimed to investigate the effect of the transverse sinus (TS) stenosis (TSS) position caused by arachnoid granulation on patients with venous pulsatile tinnitus (VPT) and to further identify the types of TSS that are of therapeutic significance for patients. Multiphysics interaction models of six patients with moderate TSS caused by arachnoid granulation and virtual stent placement in TSS were reconstructed, including three patients with TSS located in the middle segment of the TS (group 1) and three patients with TTS in the middle and proximal involvement segment of the TS (group 2). The transient multiphysics interaction simulation method was applied to elucidate the differences in biomechanical and acoustic parameters between the two groups. The results revealed that the blood flow pattern at the TS and sigmoid sinus junction was significantly changed depending on the stenosis position. Preoperative patients had increased blood flow in the TSS region and TSS downstream where the blood flow impacted the vessel wall. In group 1, the postoperative blood flow pattern, average wall pressure, vessel wall vibration, and sound pressure level of the three patients were comparable to the preoperative state. However, the postoperative blood flow velocity decreased in group 2. The postoperative average wall pressure, vessel wall vibration, and sound pressure level of the three patients were significantly improved compared with the preoperative state. Intravascular intervention therapy should be considered for patients with moderate TSS caused by arachnoid granulations in the middle and proximal involvement segment of the TS. TSS might not be considered the cause of VPT symptoms in patients with moderate TSS caused by arachnoid granulation in the middle segment of the TS.
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Affiliation(s)
- Zhenxia Mu
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Pengfei Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Shifeng Yang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Lihui Zhuang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Heyu Ding
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Xiaoyu Qiu
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Bin Gao
- Department of Biomedical Engineering, College of Chemistry and Life Science, Beijing University of Technology, Beijing 100124, China
| | - Youjun Liu
- Department of Biomedical Engineering, College of Chemistry and Life Science, Beijing University of Technology, Beijing 100124, China
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Guopeng Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhenchang Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Ximing Wang
- Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
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99
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Yang F, Liu D, Yin W, Yuan C, Hu Y, Xu J, Yang Y, Tang J, Chen J. Three-dimensional finite element analysis of the biomechanical behaviour of different dental implants under immediate loading during three masticatory cycles. Heliyon 2024; 10:e32616. [PMID: 38961961 PMCID: PMC11219977 DOI: 10.1016/j.heliyon.2024.e32616] [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: 08/26/2023] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 07/05/2024] Open
Abstract
The study aimed to evaluate the impact of varying modulus of elasticity (MOE) values of dental implants on the deformation and von Mises stress distribution in implant systems and peri-implant bone tissues under dynamic cyclic loading. The implant-bone interface was characterised as frictional contact, and the initial stress was induced using the interference fit method to effectively develop a finite element model for an immediately loaded implant-supported denture. Using the Ansys Workbench 2021 R2 software, an analysis was conducted to examine the deformation and von Mises stress experienced by the implant-supported dentures, peri-implant bone tissue, and implants under dynamic loading across three simulated masticatory cycles. These findings were subsequently evaluated through a comparative analysis. The suprastructures showed varying degrees of maximum deformation across zirconia (Zr), titanium (Ti), low-MOE-Ti, and polyetheretherketone (PEEK) implant systems, registering values of 103.1 μm, 125.68 μm, 169.52 μm, and 844.06 μm, respectively. The Zr implant system demonstrated the lowest values for both maximum deformation and von Mises stress (14.96 μm, 86.71 MPa) in cortical bone. As the MOE increased, the maximum deformation in cancellous bone decreased. The PEEK implant system exhibited the highest maximum von Mises stress (59.12 MPa), whereas the Ti implant system exhibited the lowest stress (22.48 MPa). Elevating the MOE resulted in reductions in both maximum deformation and maximum von Mises stress experienced by the implant. Based on this research, adjusting the MOE of the implant emerged as a viable approach to effectively modify the biomechanical characteristics of the implant system. The Zr implant system demonstrated the least maximum von Mises stress and deformation, presenting a more favourable quality for preserving the stability of the implant-bone interface under immediate loading.
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Affiliation(s)
- Feng Yang
- School and Hospital of Stomatology, Fujian Medical University, Fujian, China
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
- Department of Stomatology, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, China
| | - Dianbin Liu
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Wenjie Yin
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Changyong Yuan
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Yiming Hu
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Jiaqi Xu
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Yunfan Yang
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Jianteng Tang
- School of Stomatology, Xuzhou Medical University, Jiangsu, China
| | - Jiang Chen
- School and Hospital of Stomatology, Fujian Medical University, Fujian, China
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100
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Hasanvand S, Ebrahimi B, Paimard G, Rouhi M, Hashami Z, Zibaei R, Roshandel Z, Mohammadi R. Optimization of Seleno-chitosan-phytic acid nanocomplex for efficient removal of patulin from apple juice. Food Chem 2024; 443:138576. [PMID: 38301556 DOI: 10.1016/j.foodchem.2024.138576] [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: 07/27/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
A novel and effective adsorbent known as Seleno-chitosan-phytic acid nanocomplex (Se-CS-PA) has been developed specifically for efficiently removing patulin (PAT) from a simulated juice solution. The synthesis of Se-CS-PA nanocomplex was confirmed through Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), and energy dispersive X-Ray (EDX) analyses. Response surface methodology (RSM) was employed using central composite design (CCD) to examine the impact of four independent variables (PA concentration, amount of nano-complex, duration of interaction between PAT and nano-complex, and initial concentration of PAT) on the removal of PAT. PA concentration of 0.1 % with 2.1 g Se-CS-PA nanocomplex according to RSM polynomial equation and apple juice with 25 μg.L-1 PAT yielded a remarkable adsorption rate of 94.23 % and 87.52 % respectively after 7 h. The process of PAT adsorption was explained using the pseudo-first-order model (R2 = 0.8858) for the kinetic model and the Freundlich isotherm (R2 = 0.9988) for the isotherm model.
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Affiliation(s)
- Sara Hasanvand
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Behzad Ebrahimi
- Department of Food Science and Technology, Maragheh University of Medical Science, Maragheh, Iran
| | - Giti Paimard
- School of Ophthalmology and Optometry, School of Biomedical Engineering, Wenzhou Medical Uni-versity, Wenzhou, Zhejiang 325027, China
| | - Milad Rouhi
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Hashami
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Rezvan Zibaei
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Roshandel
- Students Research Committee, Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Mohammadi
- Department of Food Science and Technology, School of Nutrition Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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