RESUMO
Besides numerous advantages, poor penetration, larger size and less efficient nanomaterials are the current challenges in nanomedicine-based therapies. Graphitic carbon nitride (g-C3N4) possesses all the constructive features to overcome the hurdles in cancer therapy. This is a detailed study on the prospects of utilizing g-C3N4 as a therapeutic agent and through this study it has been established that metal incorporations have improved their performance at in vitro levels. g-C3N4 nanomaterial was prepared by simple thermal decomposition process. The synthesized nanosheets were characterized by using UV-visible spectrometer, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and thermo-gravimetric analysis (TG/DTA). The incorporation of metal particles also has been confirmed by the above mentioned methods. Dose dependent cytotoxicity studies were performed on three different cell lines such as A549, PC-3 and MCF-7. The free radical scavenging activity of g-C3N4 nanosheets was promising using 1,1'-diphenyl-2-picrylhydrazyl (DPPH) assay. Cell scavenging activity of Ë45% with DPPH was observed at 100 µl concentrations of Ag/g-C3N4, Zn/g-C3N4 and g-C3N4. The cytotoxicity and free radical scavenging of cancer cell lines was better with metal incorporated g-C3N4 than their bare counterparts. Hence the study of these thin sheets of nanomaterial is encouraging to be explored as one of the future tools for biomedical therapeutics.
Assuntos
Nanopartículas Metálicas , Neoplasias , Linhagem Celular , Citotoxinas , Radicais Livres , Grafite , Testes de Sensibilidade Microbiana , Neoplasias/tratamento farmacológico , Compostos de Nitrogênio , Difração de Raios XRESUMO
INTRODUCTION: Medical imaging mechanization has reformed medical management, empowering doctors to recognize cancer prematurely and promote patient outcomes. Imaging tests are of significant influence in the detection and supervision of cancer patients. Cancer recognition generally necessitates imaging studies that, in most instances, utilize a trivial amount of radiation. Methodologies such as X-rays, computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) are predominant in clinical managerial, incorporating remedy and research. BACKGROUND: Over recent years, diagnostic imaging has progressed from a state of commencement to an advanced level. Numerous modern imaging procedures have evolved. Although contemporary medical imaging comprises image exhibition together with image refining, computer-aided diagnosis (CAD), image inscribing and conserving, and image transference, the majority of which are embraced in picture documentation and communication processes. AIM: This review targets to encapsulate toxicology information on skin cancer unpredictability essential to interpretation measures, report important factor that helps in defining skin cancer condition, and possible medical care alternatives or medical attention endorsed referring to diverse aspects involving the size and site of malignancy, the complications, patient's priority and well being. We concisely review various therapy alternatives, methods of radiation autoimmunity, prime observational study designs of medical and distinct radiation resources and cancer risks, and current analysis methodologies and research precision. CONCLUSION: The detail of this paper covers a brief review of research and evolution in medical imaging discipline and mechanism. This review considers the physiology of melanocytes and the pathogenesis of skin cancer using medical imaging. Also, a description of risk factors, prevention methods, screening, various diagnosis methods and different stages of skin cancer, sub-types and different types of treatment methods is provided in this paper for research and development.
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Diagnóstico por Imagem , Neoplasias Cutâneas , Humanos , Neoplasias Cutâneas/diagnóstico por imagem , Diagnóstico por Imagem/métodos , Imageamento por Ressonância Magnética/métodos , Tomografia Computadorizada por Raios X/métodos , Tomografia por Emissão de Pósitrons/métodosRESUMO
Skin cancer, typically melanoma, is a deadly categorization of cancer. The early diagnosis of melanoma can reduce the risk factor. The computer-aided diagnosis is a beneficial method that can identify melanoma prematurely. Therefore, a system that can detect melanoma at an initial stage which will help treat the person before the disease spreads further to other body organs is highly recommended. BACKGROUND: Researchers have made several advancements in this field, including automatic segmentation techniques, computer-aided diagnosis, mobile-based technology, deep learning methods, hybrid methods etc. All these techniques are beneficial in diagnosing melanoma or segregating skin lesions into different categories. AIM: This paper aims to define different types of skin cancers, diagnosis procedures and statistics. This paper presents skin cancer statistics over a period of time in India. The increment in the number of skin carcinoma and melanoma cases from 1990 to 2020 as well as the mortality rates, has been presented in this paper. Also, this paper provides a review of different technologies used by researchers in detecting melanoma. CONCLUSION: The rise in the number of cases by 2040 and mortality rates are compared. The statistics that are used in this paper are as per hospital-based cancer registries (HBCR) 2021 prepared by the Indian Council of Medical Research - National Centre for Disease Informatics and Research, Bengaluru (ICMR-NCDIR) and from World Health Organization (WHO).