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Alkaloids and Nitrosamines in Betel Quid: A Biochemical Exploration of Carcinogenicity.
Chem Biol Interact
January 2025
Department of Community Dental Health, Faculty of Dental Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka.
Betel quid contains two major ingredients; Areca catechu and Piper betel, often consumed with slaked lime, tobacco, certain flavouring agents, colouring agents, herbs, and spices according to personal preferences. The areca nut alkaloids (arecoline, arecaidine, guvacine, and guvacoline), and tobacco alkaloids (nicotine, nor-nicotine) undergo nitrosation during chewing in the oral cavity with the presence of nitrite and thiocyanate and endogenously. Among the nitrosation products generated areca nut-derived nitrosamine (ADNA): 3-(methylnitrosamino) Propionitrile (MNPN) and the two tobacco-specific nitrosamines (TSNAs); N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone) (NNK) are considered Group 1 human carcinogens.
View Article and Find Full Text PDFseed oil for possible human consumption: A toxicological assessment of its phorbol esters.
Toxicol Rep
June 2025
Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo 315048, China.
seeds are known for their high oil content, and the oil extracted from these seeds has been traditionally utilized in biodiesel production. The presence of toxic compounds, specifically phorbol esters (PEs), in seed oil (JCSO) has blocked its use for human consumption. This article presents a thorough literature review that summarizes the latest research on the toxicological effects, including acute toxicity, genotoxicity, carcinogenicity, and chronic toxicity associated with phorbol esters (JCPEs).
View Article and Find Full Text PDFImpact of Emergency Warning Nursing on CRP, PCT, TNF-α and Clinical Indicators in Patients with Acute Stress Disorder under Hierarchical Analysis.
Actas Esp Psiquiatr
January 2025
Clinical Teaching and Research Department, The Southwest Hospital of AMU, 400038 Chongqing, China.
Background: In emergency warning nursing, the pre-alert system significantly influences the biochemical markers and clinical outcomes of patients with Acute Stress Disorder. Therefore, this study applies hierarchical analysis to explore the impact of early warning nursing on crucial indicators such as C-reactive protein (CRP), procalcitonin (PCT), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and assess their clinical efficacy.
Methods: The study selected patients with acute stress disorder who were hospitalized in Southwest Hospital of Chongqing from December 2021 to December 2022, and collected data from 250 patients.
The ultrastructural changes in the adult rat ovary after administration of copper oxide nanoparticles and the possible ameliorative influence of selenium.
Ultrastruct Pathol
January 2025
Department of Medical Histology and Cell Biology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
There is an important concern about the potential health and environmental risks that may develop due to exposure to copper oxide nanoparticles (CuO-NPs). Selenium is an essential trace element. It supports the expression of a variety of selenoproteins.
View Article and Find Full Text PDFA light-cured injectable composite hydrogel based on chitosan and decellularized matrix modulates stem cell aggregation behavior for accelerating cartilage defect repair.
Int J Biol Macromol
January 2025
The Affiliated Lihuili Hospital of Ningbo University, Ningbo 315040, China. Electronic address:
Cartilage repair remains a formidable challenge because of its limited regenerative capacity. Construction of a biomimetic hydrogel matrix that can induce cell aggregation is a promising therapeutic option. Cell aggregates are more beneficial than dissociated cells for improving survival and chondrogenic differentiation, thereby facilitating cartilage repair.
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