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Ajayebi FS, Hassanzadeh Nemati N, Hatamirad A, Ghazli M, Attaran N. Design and fabrication of alginate hydrogel nanohybrid as a promising cancer treatment. Iran J Basic Med Sci 2024; 27:695-705. [PMID: 38645499 PMCID: PMC11024409 DOI: 10.22038/ijbms.2024.74226.16127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 12/31/2023] [Indexed: 04/23/2024]
Abstract
Objectives Basal cell carcinoma (BCC) is the most common form of skin cancer and the most frequently occurring form of all cancers, affecting sun-exposed areas like the face. Surgery is the main treatment, focusing on safe and minimally invasive methods for better outcomes. Technology has enabled the development of artificial skin substitutes for tissue repair. Tissue engineering uses scaffolds to create functional replacements. This project aims to create an alginate-based hydrogel with PEG-coated gold nanoparticles. Materials and Methods The project extensively explored the modification of alginate hydrogels with PEG-coated gold nanoparticles, involving the synthesis of gold nanoparticles, their integration with the polymer, and the subsequent preparation of the concentrated hybrid hydrogel. Utilizing various physicochemical techniques, such as UV-visible spectroscopy, transmission electron microscopy, dynamic light scattering, zeta potential analysis, scanning electron microscopy, and Fourier transform infrared spectroscopy, the fabrication process was optimized and characterized. Results The successful synthesis of the hybrid biomaterial was achieved through robust and highly reproducible methods. The MTT assay results offered valuable insights into the biocompatibility and safety of the PEG-coated gold nanoparticle-loaded alginate-based films. The incorporation of PEG-coated gold nanoparticles allowed for potential drug loading on the nanoparticle surface and, consequently, within the hydrogel. Cellular assays were conducted to assess the potential applications of this novel biomaterial. Conclusion The addition of polyethylene glycol made it possible to load different drugs onto the gold nanoparticles and also within the hydrogel. This makes it a promising choice for potential uses in tissue engineering.
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Affiliation(s)
- Fatemeh Sadat Ajayebi
- Department of biomedical engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Nahid Hassanzadeh Nemati
- Department of biomedical engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Alireza Hatamirad
- Department of biomedical engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mahrad Ghazli
- Department of biomedical engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Neda Attaran
- Department of Medical Nanotechnology, Applied Biophotonics Research Center, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
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Wang YJ, Lang XQ, Wu D, He YQ, Lan CH, Xiao X, Wang B, Zou DW, Wu JM, Zhao YB, Dettmar PW, Chen DF, Yang M. Salivary Pepsin as an Intrinsic Marker for Diagnosis of Sub-types of Gastroesophageal Reflux Disease and Gastroesophageal Reflux Disease-related Disorders. J Neurogastroenterol Motil 2020; 26:74-84. [PMID: 31650768 PMCID: PMC6955190 DOI: 10.5056/jnm19032] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/14/2019] [Accepted: 07/23/2019] [Indexed: 12/13/2022] Open
Abstract
Background/Aims To determine the value of salivary pepsin in discriminating sub-types of gastroesophageal reflux disease (GERD) and GERD-related disorders. Methods Overall, 322 patients with different sub-types of GERD and 45 healthy controls (HC) were studied. All patients took Gastroesophageal Reflux Disease Questionnaire (GerdQ) and underwent endoscopy and 24-hour esophageal pH monitoring and manometry. Salivary pepsin concentration (SPC) was detected by using colloidal gold double-antibody immunological sandwich assay. Oral esomeprazole treatment was administrated in the patients with non-erosive reflux disease (NERD) and extra-esophageal symptoms (EES). Results Compared to HC, patients with erosive esophagitis, NERD, EES, EES plus typical GERD symptoms, or Barrett’s esophagus had a higher prevalence of saliva and SPC (all P < 0.001). There was no significant difference in the positive rate for pepsin in patients with functional heartburn or GERD with anxiety and depression, compared to HC. After esomeprazole treatment, the positive rate and SPC were significantly reduced in NERD (both P < 0.001) and in EES (P = 0.001 and P = 0.002, respectively). Of the 64 NERD patients, 71.9% (n = 46) were positive for salivary pepsin, which was significantly higher than the rate (43.8%, n = 28) of pathological acid reflux as detected by 24-hour esophageal pH monitoring (P = 0.002). Conclusions Salivary pepsin has an important significance for the diagnosis of GERD and GERD-related disorders. Salivary pepsin and 24-hour esophageal pH monitoring may complement with each other to improve the diagnostic efficiency.
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Affiliation(s)
- Yan-Jun Wang
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Xiu-Qiong Lang
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Dan Wu
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Yu-Qin He
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Chun-Hui Lan
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Xiao Xiao
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Bin Wang
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Duo-Wu Zou
- Department of Gastroenterology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ji-Min Wu
- Department of Gastroenterology, Department of Gastroesophageal Reflux Disease, PLA Rocket Force General Hospital, Beijing, China
| | - Yong-Bin Zhao
- Department of Gastroenterology, Xinqiao Hospital, Chongqing, China
| | | | - Dong-Feng Chen
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
| | - Min Yang
- Department of Gastroenterology, Daping Hospital, Army Medical Center of PLA, Army Medical University, Chongqing, China
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Fu GY, Gong J, Leng XX. [Determination of cadmium in human urine by colloidal gold immunochromatographic assay]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:223-225. [PMID: 28511314 DOI: 10.3760/cma.j.issn.1001-9391.2017.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish the method of colloidal gold immunochrom atographic assay for detecting cadmium ions rapidly. Methods: The anti-cadmium ion monoclonal antibody-gold conjugate was labeled on the binding pad, cadmium ion hapten and goat anti-mouse IgG were coated on nitrocellulose membrane as the detection line (T line) and quality control line (C line) respectively. The sample pad, colloidal gold bonding pad, nitrocellulose membrane and absorption pad were orderly assembled on the PVC board to cut into a test paper strip. The qualitative results of the assay were visualized in color. Results: When detecting the human urine cadmium ions, the results were tested qualitativly within 15 minutes. The detection limit was 30 μg/L. No cross-reactivity with other heavy metal ions. The test paper strip could be stored at 4 ℃ for 3 months. Conclusion: The method has the advantages of low cost, strong specificity, good stability and reliable results, and is suitable for rapid screening of cadmium poisoning of enterprise and occupational health.
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Affiliation(s)
- G Y Fu
- Occupational Disease Prevention and Control of Hospital in Chongqing, Chongqing 400060, China
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Moon J, Kwak JI, Kim SW, An YJ. Multigenerational effects of gold nanoparticles in Caenorhabditis elegans: Continuous versus intermittent exposures. Environ Pollut 2017; 220:46-52. [PMID: 27634002 DOI: 10.1016/j.envpol.2016.09.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/06/2016] [Accepted: 09/07/2016] [Indexed: 05/29/2023]
Abstract
Nanomaterials can become disseminated directly or indirectly into the soil ecosystem through various exposure routes. Thus, it is important to study various deposition routes of nanomaterials into the soil, as well as their toxicities. Here, we investigated the multigenerational effects of gold nanoparticles (AuNPs) on C. elegans after continuous or intermittent food intake. Following continuous exposure, significant differences were observed in the reproduction rate of C. elegans in the F2-F4 generations, which were associated with reproductive system abnormalities. However, following intermittent AuNP exposure in P0 and F3, reproductive system abnormalities and inhibited reproduction rates were observed in F2 and F3. While continuous AuNP exposure impaired reproduction from F2 to F4, intermittent exposure caused more pronounced effects on F3 worms, which may have resulted from damage during the convalescence period up through F2. These data showed the occurrence of multigenerational effects following different exposure patterns, exposure levels, and recovery periods. To our knowledge, this is the first study to demonstrate that multigenerational nano-toxicity is caused by different exposure patterns and provides insights into the unpredictable exposure scenarios of AuNPs and their adverse effects.
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Affiliation(s)
- Jongmin Moon
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jin Il Kwak
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Shin Woong Kim
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Youn-Joo An
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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