ABSTRACT
BACKGROUND: There were concerns about the psychological outcomes of coronavirus disease from the beginning of the pandemic. Parkinson's disease (PD) patients seem to be more vulnerable to mental health disorders like stress, depression, anxiety, or worsening quality of life during COVID-19 lockdown. We aimed to conduct a systematic review to investigate the psychological outcomes of COVID-19 among the PD population. METHODS: A systematic search was conducted using PubMed, Scopus, and Web of Science. We included original studies which reported the psychological impact of COVID-19 in the PD population with a minimum of 10 cases. RESULTS: After the screening, 21 studies with a total of 5236 PD cases were included in our qualitative synthesis. Depression, anxiety, and to less extent sleep disorders and apathy are the most studied psychological outcomes. Most of the studies indicated that the severity or the prevalence of psychiatric disturbance increased due to the COVID-19 pandemic in PD patients. The prevalence of anxiety was 14% to 66.5%, while depression was reported in 0% to 50% of PD patients during and after the pandemic. Also, sleep problems were reported in 35.4% to 68.9% of PD patients. CONCLUSION: Considering the overall trend of increment in the severity of the main psychological outcomes observed in the present systematic review, it is suggested that future studies conduct a more accurate analysis of the prevalence, severity, and associated pathology of psychological outcomes of COVID-19 in PD patients.
Subject(s)
COVID-19 , Parkinson Disease , Anxiety/epidemiology , Anxiety/etiology , Anxiety/psychology , COVID-19/epidemiology , Communicable Disease Control , Depression/epidemiology , Depression/etiology , Depression/psychology , Humans , Pandemics , Parkinson Disease/complications , Parkinson Disease/epidemiology , Parkinson Disease/psychology , Quality of Life , Stress, Psychological/epidemiologyABSTRACT
BACKGROUND: We discovered that pure positive electrostatic charges (PECs) have an intrinsic suppressive effect on the proliferation and metabolism of invasive cancer cells (cell lines and animal models) without affecting normal tissues. METHODS: We interacted normal and cancer cell lines and animal tumors with PECs by connecting a charged patch to cancer cells and animal tumors. many biochemical, molecular and radiological assays were carried out on PEC treated and control samples. RESULTS: Correlative interactions between electrostatic charges and cancer cells contain critical unknown factors that influence cancer diagnosis and treatment. Different types of cell analyses prove PEC-based apoptosis induction in malignant cell lines. Flowcytometry and viability assay depict selective destructive effects of PEC on malignant breast cancer cells. Additionally, strong patterns of pyknotic apoptosis, as well as downregulation of proliferative-associated proteins (Ki67, CD31, and HIF-1α), were observed in histopathological and immunohistochemical patterns of treated mouse malignant tumors, respectively. Quantitative real-time polymerase chain reaction results demonstrate up/down-regulated apoptotic/proliferative transcriptomes (P21, P27, P53/CD34, integrin α5, vascular endothelial growth factor, and vascular endothelial growth factor receptor) in treated animal tumors. Expression of propidium iodide in confocal microscopy images of treated malignant tissues was another indication of the destructive effects of PECs on such cells. Significant tumor size reduction and prognosis improvement were seen in over 95% of treated mouse models with no adverse effects on normal tissues. CONCLUSION: We discovered that pure positive electrostatic charges (PECs) have an intrinsic suppressive effect on the proliferation and metabolism of invasive cancer cells (cell lines and animal models) without affecting normal tissues. The findings were statistically and observationally significant when compared to radio/chemotherapy-treated mouse models. As a result, this nonionizing radiation may be used as a practical complementary approach with no discernible side effects after passing future human model studies.
Subject(s)
Cell Proliferation , Neoplasm Metastasis/pathology , Neoplasm Metastasis/therapy , Static Electricity , Animals , Apoptosis , Cell Line, Tumor , Disease Models, Animal , Mammary Neoplasms, Experimental/drug therapy , Mammary Neoplasms, Experimental/metabolism , Mammary Neoplasms, Experimental/pathology , Mammary Neoplasms, Experimental/radiotherapy , Necrosis , Neoplasm GradingABSTRACT
Colloidal quantum dots (CQD) have attracted considerable attention for biomedical diagnosis and imaging as well as biochemical analysis and stem cell tracking. In this study, quasi core/shell lead sulfide/reduced graphene oxide CQD with near infrared emission (1100 nm) were prepared for potential bioimaging applications. The nanocrystals had an average diameter of ~4 nm, a hydrodynamic size of ~8 nm, and a high quantum efficiency of 28%. Toxicity assay of the hybrid CQD in the cultured human mononuclear blood cells does not show cytotoxicity up to 200 µg/ml. At high concentrations, damage to mitochondrial activity and mitochondrial membrane potential (MMP) due to the formation of uncontrollable amounts of intracellular oxygen radicals (ROS) was observed. Cell membrane and Lysosome damage or a transition in mitochondrial permeability were also noticed. Understanding of cell-nanoparticle interaction at the molecular level is useful for the development of new fluorophores for biomedical imaging.
