Effects of Ionizing Radiation on Biopolymers for Applications as Biomaterials DOI Open Access
Masayuki Hara

Deleted Journal, Journal Year: 2022, Volume and Issue: 1(2), P. 587 - 604

Published: Nov. 8, 2022

Biopolymers, including extracellular matrix proteins and polysaccharides, are used as substrates for cell culture scaffolds in tissue engineering. Ionizing radiation, example with gamma rays or electron beams, is to sterilize materials modify the physical chemical properties of materials. The principles effect ionizing radiation on biopolymers discussed this review article. Among types beams widely biomaterials construct medical devices. Water molecules split by irradiation give hydrated electrons, proton radicals hydroxyl radicals. These reactive molecular species react polymer chains provoke scission crosslinking reactions. Both can occur, depending conditions. Sterilization necessary if they devices implants. advantages disadvantages comparison other methods sterilization also discussed. Irradiations strong three biopolymers—Type I collagen, wool keratin alginate—are described examples biopolymers. a very useful tool sterilizing constructing devices, but it important that we know its merits demerits, well limitations, safety risks, applications.

Language: Английский

Current insights and future perspectives of ultraviolet radiation (UV) exposure: Friends and foes to the skin and beyond the skin DOI Creative Commons
X. Tang,

Tingyi Yang,

Daojiang Yu

et al.

Environment International, Journal Year: 2024, Volume and Issue: 185, P. 108535 - 108535

Published: Feb. 27, 2024

Ultraviolet (UV) radiation is ubiquitous in the environment, which has been classified as an established human carcinogen. As largest and outermost organ of body, direct exposure skin to sunlight or UV can result sunburn, inflammation, photo-immunosuppression, photoaging even cancers. To date, there are tactics protect by preventing reducing amount skin. Nevertheless, deciphering essential regulatory mechanisms may pave way for therapeutic interventions against UV-induced disorders. Additionally, light considered beneficial specific skin-related conditions medical therapy. Recent evidence indicates that biological effects extend beyond include treatment inflammatory diseases, solid tumors certain abnormal behaviors. This review mainly focuses on Moreover, novel findings other organs systems also summarized. through affects organism remain be fully elucidated achieve a more comprehensive understanding its effects.

Language: Английский

Citations

88

Dielectric‐Based Metamaterials for Near‐Perfect Light Absorption DOI

Ben‐Xin Wang,

Xuefeng Qin,

Guiyuan Duan

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: March 17, 2024

Abstract The emergence of metamaterials and their continued prosperity have built a powerful working platform for accurately manipulating the behavior electromagnetic waves, providing sufficient possibility realization metamaterial absorbers with outstanding performance. However, composed metallic materials typically possess many unfavorable factors, such as non‐adjustable absorption, easy oxidation, low‐melting, expensive preparation costs. selection dielectric provides excellent alternatives due to remarkable properties, thus dielectric‐based (DBMAs) attracted much attention. To promote breakthroughs in DBMAs guide future development, this work systematically deeply reviews recent research progress from four different but progressive aspects, including physical principles; classifications, material selections tunable properties; technologies; functional applications. Five types theories related mechanisms, Mie resonance, guided‐mode Anapole are briefly outlined explain having near‐perfect absorption Mainstream selections, structure designs, highlighted. Several widely utilized methods customizing given. Various practical applications sensing, stealth technology, solar energy interference suppression reviewed. Finally, some key challenges feasible solutions DBMAs’ development provided.

Language: Английский

Citations

59

Synthesis and Bioapplication of Emerging Nanomaterials of Hafnium DOI
David Skrodzki, Matthew Molinaro, Richard S. Brown

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(2), P. 1289 - 1324

Published: Jan. 2, 2024

A significant amount of progress in nanotechnology has been made due to the development engineered nanoparticles. The use metallic nanoparticles for various biomedical applications extensively investigated. Biomedical research is highly focused on them because their inert nature, nanoscale structure, and similar size many biological molecules. intrinsic characteristics these particles, including electronic, optical, physicochemical, surface plasmon resonance, that can be altered by altering size, shape, environment, aspect ratio, ease synthesis, functionalization properties, have led numerous applications. Targeted drug delivery, sensing, photothermal photodynamic therapy, imaging are some these. promising clinical results NBTXR3, a high-Z radiosensitizing nanomaterial derived from hafnium, demonstrated translational potential this metal. This radiosensitization approach leverages dependence energy attenuation atomic number enhance energy-matter interactions conducive radiation therapy. High-Z nanoparticle localization tumor issue differentially increases effect ionizing cancer cells versus nearby healthy ones mitigates adverse effects reducing overall burden. principle enables material multifunctionality as contrast agents X-ray-based imaging. physiochemical properties hafnium (Z = 72) particularly advantageous well-placed K-edge absorption high mass coefficient compared elements human tissue across ranges leads attenuation. Chemical reactivity allows variety composition, functionalization. Nanoparticles such oxide exhibit excellent biocompatibility inertness prior incidence with radiation. Additionally, optical electronic applicable biosensing, component coatings, semiconductors. wide interest prompted extensive design synthesis facilitate property fine-tuning. review summarizes synthetic methods hafnium-based nanomaterials imaging, biosensing mechanistic focus. discussion future perspective section highlights elaborates current challenges. By focusing factors impacting applicational effectiveness examining limitations aims support researchers expedite translation nanomedicine.

Language: Английский

Citations

19

Extracellular matrix-inspired biomaterials for wound healing DOI Creative Commons
Louise Hosty,

Thomas Heatherington,

Fabio Quondamatteo

et al.

Molecular Biology Reports, Journal Year: 2024, Volume and Issue: 51(1)

Published: July 22, 2024

Diabetic foot ulcers (DFU) are a debilitating and life-threatening complication of Diabetes Mellitus. Ulceration develops from combination associated diabetic complications, including neuropathy, circulatory dysfunction, repetitive trauma, they affect approximately 19-34% patients as result. The severity chronic nature stems the disruption to normal wound healing, result molecular mechanisms which underly pathophysiology. current standard-of-care is clinically insufficient promote healing for many DFU patients, resulting in high frequency recurrence limb amputations. Biomaterial dressings, particular those derived extracellular matrix (ECM), have emerged promising approach treatment DFU. By providing template cell infiltration skin regeneration, ECM-derived biomaterials offer great hope A range approaches exist development biomaterials, use purified ECM components, decellularisation processing donor/ animal tissues, or vitro-deposited ECM. This review discusses assessment wounds, well action through stimulate healing.

Language: Английский

Citations

10

Impact of therapeutic X-ray exposure on collagen I and associated proteins DOI Creative Commons
Ren Jie Tuieng, Catherine Disney, Sarah H. Cartmell

et al.

Acta Biomaterialia, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Biological tissues are exposed to X-rays in medical applications (such as diagnosis and radiotherapy) research studies (for example microcomputed X-ray tomography: microCT). Radiotherapy may deliver doses up 50Gy both tumour healthy tissues, resulting undesirable clinical side effects which can compromise quality of life. Whilst cellular responses relatively well-characterised, X-ray-induced structural damage the extracellular matrix (ECM) is poorly understood. This study tests hypotheses that ECM proteins ECM-rich (purified collagen I rat tail tendons respectively) structurally compromised by exposure used breast radiotherapy. Protein gel electrophoresis demonstrated radiotherapy equivalent induce fragmentation constituent α chains solubilised purified I. However, assembly into fibrils, either vitro or vivo, prevented but not changes (as characterised LC-MS/MS peptide location fingerprinting: PLF). In subsequent experiments higher (synchrotron) induced substantial fibrillar (chicken tendon) PLF analysis synchrotron-irradiated tendon identified structure-associated collagens I, VI, XII, proteoglycans including aggrecan, decorin, fibromodulin, elastic fibre component fibulin-1. Thus, affect structure key tissue components, although additional will be required understand dose dependent effects. STATEMENT OF SIGNIFICANCE: systems routinely during treatments (radiotherapy) imaging (microCT). impact ionising radiation on cells well interactions between not. Here, we show low sufficient its forms. Although intermediate was determined, high exposures achievable using a synchrotron source had an even greater effect molecules and, tendon, structures many accessory proteins, The unwanted therefore due only also surrounding matrix.

Language: Английский

Citations

1

Radiotherapy-induced tumor physical microenvironment remodeling to overcome immunotherapy resistance DOI
Jianfeng Peng, Xiaoyan Yin,

Wenhua Yun

et al.

Cancer Letters, Journal Year: 2023, Volume and Issue: 559, P. 216108 - 216108

Published: March 2, 2023

Language: Английский

Citations

22

Mid-urethral sling with proper sling tension is an effective treatment for stress urinary incontinence in women after pelvic radiotherapy: a pilot study of case series DOI Creative Commons

Xing Guan,

Fei Wang, Di Zhang

et al.

Frontiers in Surgery, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 3, 2025

At present, consensus on the management of female stress urinary incontinence (SUI) after pelvic radiotherapy is lacking. We aim to assess clinical effects mid-urethral sling (MUS) for treatment SUI in women. conducted a retrospective review database with from June 2015 February 2022. The efficacy was evaluated by International Consultation Incontinence Questionnaire-Short Form (ICI-Q-SF) questionnaire, maximum flow rate (Qmax) and postvoid residual (PVR) urine. All patients were reviewed postoperatively an outpatient clinic. identified 26 mean age 59.35 ± 7.32 years. who suffered had history gynaecological malignancies received radiotherapy. 21 (80.77%, 95% CI: 0.621-0.915) considered have successfully improved surgery, ICI-Q-SF scores lower than pre-operative at 2 weeks, 6 months 1 year (P < 0.01). After 1-year follow-up, none mesh erosion. following malignancy can be challenging manage. MUS highly effective safe option radiotherapy, additionally, that proper tension key success procedure.

Language: Английский

Citations

0

Bidirectional Mendelian Randomization Analysis to Study the Relationship Between Human Skin Microbiota and Radiation-Induced Skin Toxicity DOI Creative Commons
Hui Chen, Xiaojie Xia,

Kexin Shi

et al.

Microorganisms, Journal Year: 2025, Volume and Issue: 13(1), P. 194 - 194

Published: Jan. 17, 2025

Radiation-induced skin toxicity, resulting from ionizing or nonionizing radiation, is a common disorder. However, the underlying relationship between microbiota and radiation-induced toxicity remains largely unexplored. Herein, we uncover microbiota–skin interaction based on genome-wide association study (GWAS) featuring 150 three types of microenvironment. Summary datasets human were extracted GWAS catalog database, summary FinnGen biobank. Mendelian Randomization (MR) analysis was leveraged to sort out causal link toxicity. We identified 33 connections including 19 positive 14 negative causative directions. Among these potential associations, genus Staphylococcus could serve as risk factor for especially radiodermatitis. And Streptococcus salivarius protective against Additional indicated no pleiotropy, heterogeneity, reverse in results. comprehensively assessed associations with several suggestive links. Our results provide promising targets prevention treatment

Language: Английский

Citations

0

Radioactivity Dispersion in Marine Sediments: A Global Perspective with a Case Study of Durban Beaches, South Africa DOI
Naven Chetty, Abiola Olawale Ilori, Olusegun Yemi Omogunloye

et al.

Springer oceanography, Journal Year: 2025, Volume and Issue: unknown, P. 267 - 306

Published: Jan. 1, 2025

Language: Английский

Citations

0

A Deferoxamine-Loaded Microneedle Patch Enhances Healing of Radiation-Induced Skin Injury: Potential Involvement of Ferroptosis DOI
Kai Tian, Pingfan Wu,

Suyue Gao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

Radiation-induced skin injury (RSI) presents a significant challenge in wound care due to its complex pathophysiology, which includes increased oxidative stress, impaired angiogenesis, and delayed re-epithelialization. Transcriptomic analysis reveals alterations genes associated with the ferroptosis pathway following radiation exposure. In this study, we introduce microneedles composed of silk fibroin hydrogel loaded deferoxamine (SF+MNs+DFO) inhibit ferroptosis. SF+MNs+DFO exhibits optimal mechanical properties drug release kinetics. Histopathological shows reduced inflammation, collagen deposition RSI treated SF+MNs+DFO, leading accelerated tissue regeneration decreased scarring. Molecular biology studies indicate that inhibits by reducing concentration free Fe2+ body, thereby decreasing generation reactive oxygen species (ROS) lipid peroxidation. Immunofluorescence further confirm neovascularization fibrosis SF+MNs+DFO-treated RSI, indicating enhanced repair. not only but also promotes angiogenesis regeneration, offering promising therapeutic strategy for RSI. conclusion, DFO-loaded SF provide precise delivery, iron chelation, improved healing, demonstrating an effective approach treating

Language: Английский

Citations

0