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The Journal of Clinical and Aesthetic... Jun 2023Phototherapy has gained popularity in the recent decades for the treatment of various immune-mediated dermatological conditions since it is more-cost effective and less...
Phototherapy has gained popularity in the recent decades for the treatment of various immune-mediated dermatological conditions since it is more-cost effective and less toxic compared to systemic therapies. This systematic review aims to inform dermatology providers of the risks and benefits of phototherapy, especially in patients at risk for malignancies. Ionizing energy from phototherapy results in DNA photolesions, namely of cyclobutane pyrimidine dimers (CPDs) and 6-4 photoproducts (6-4PPs). Without adequate repair, these mutations increase the risk for carcinogenesis. Additionally, phototherapy can also indirectly cause DNA damage through the formation of reactive oxygen species (ROS), which damage of several structural and functional proteins and DNA. When choosing a phototherapy modality, it also important to take into consideration the side effect profiles associated with each modality. For instance, a 10-fold higher dose of NB-UVB is required to produce a similar amount of CPDs compared with BB-UVB. Patients who undergo UVA with psoralen (PUVA) can be susceptible to developing skin malignancies up to 25 years after receiving their last treatment. It would behoove providers to consider optimal radiation dosage given each patients' level of skin pigmentation and potential for photoadaptation. Additionally, there are measures have been proposed to minimize deleterious skin changes, such as a 42-degree Celsius heat treatment using a 308nm excimer laser prior to UVB phototherapy and low frequency, low intensity electromagnetic fields along with UVB. However, as performing routine skin exams, remain paramount in the prevention of phototherapy-induced neoplasia.
PubMed: 37361361
DOI: No ID Found -
Acta Biochimica Polonica Jun 2023Vitamin D has anti-proliferative, anti-inflammatory, and apoptotic abilities. Vitamin D deficiency can induce deoxyribonucleic acid (DNA) damage. The aim of the study...
Vitamin D has anti-proliferative, anti-inflammatory, and apoptotic abilities. Vitamin D deficiency can induce deoxyribonucleic acid (DNA) damage. The aim of the study was to create a systematic review to analyze the relationship between vitamin D and DNA damage in various populations. PubMed, Scopus, EbscoHost, Google Scholar, and Epistemonikos were used to identify literature regarding the relationship between vitamin D and DNA damage. Assessment of study quality was carried out by three independent reviewers individually. A total of 25 studies were assessed as eligible and included in our study. Twelve studies were conducted in humans consisting of two studies with experimental design and ten studies with observational pattern. Meanwhile, thirteen studies were conducted in animals (in vivo). It is found that the majority of studies demonstrated that vitamin D prevents DNA damage and minimizes the impact of DNA damage that has occurred (p<0.05). However, two studies (8%) did not find such an association and one research only found a specific association in the cord blood, not in maternal blood. Vitamin D has a protective effect against DNA damage. A diet rich in vitamin D and vitamin D supplementation is recommended to prevent DNA damage.
Topics: Humans; Animals; Vitamin D; Vitamins; Vitamin D Deficiency; Inflammation; DNA; Dietary Supplements
PubMed: 37329504
DOI: 10.18388/abp.2020_6641 -
Open Medicine (Warsaw, Poland) 2023Today, in the modern world, people are often exposed to electromagnetic waves, which can have undesirable effects on cell components that lead to differentiation and... (Review)
Review
Today, in the modern world, people are often exposed to electromagnetic waves, which can have undesirable effects on cell components that lead to differentiation and abnormalities in cell proliferation, deoxyribonucleic acid (DNA) damage, chromosomal abnormalities, cancers, and birth defects. This study aimed to investigate the effect of electromagnetic waves on fetal and childhood abnormalities. PubMed, Scopus, Web of Science, ProQuest, Cochrane Library, and Google Scholar were searched on 1 January 2023. The Cochran's -test and statistics were applied to assess heterogeneity, a random-effects model was used to estimate the pooled odds ratio (OR), standardized mean difference (SMD), and mean difference for different outcomes, and a meta-regression method was utilized to investigate the factors affecting heterogeneity between studies. A total of 14 studies were included in the analysis, and the outcomes investigated were: change in gene expression, oxidant parameters, antioxidant parameters, and DNA damage parameters in the umbilical cord blood of the fetus and fetal developmental disorders, cancers, and childhood development disorders. Totally, the events of fetal and childhood abnormalities were more common in parents who have been exposed to EMFs compared to those who have not (SMD and 95% confidence interval [CI], 0.25 [0.15-0.35]; , 91%). Moreover, fetal developmental disorders (OR, 1.34; CI, 1.17-1.52; , 0%); cancer (OR, 1.14; CI, 1.05-1.23; , 60.1%); childhood development disorders (OR, 2.10; CI, 1.00-3.21; , 0%); changes in gene expression (mean difference [MD], 1.02; CI, 0.67-1.37; , 93%); oxidant parameters (MD, 0.94; CI, 0.70-1.18; , 61.3%); and DNA damage parameters (MD, 1.01; CI, 0.17-1.86; , 91.6%) in parents who have been exposed to EMFs were more than those in parents who have not. According to meta-regression, publication year has a significant effect on heterogeneity (coefficient: 0.033; 0.009-0.057). Maternal exposure to electromagnetic fields, especially in the first trimester of pregnancy, due to the high level of stem cells and their high sensitivity to this radiation, the biochemical parameters of the umbilical cord blood examined was shown increased oxidative stress reactions, changes in protein gene expression, DNA damage, and increased embryonic abnormalities. In addition, parental exposure to ionizing and non-ionizing radiation can lead to the enhancement of different cell-based cancers and developmental disorders such as speech problems in childhood.
PubMed: 37197358
DOI: 10.1515/med-2023-0697 -
Biology Apr 2023Senescence is a cellular aging process in all multicellular organisms. It is characterized by a decline in cellular functions and proliferation, resulting in increased... (Review)
Review
BACKGROUND
Senescence is a cellular aging process in all multicellular organisms. It is characterized by a decline in cellular functions and proliferation, resulting in increased cellular damage and death. These conditions play an essential role in aging and significantly contribute to the development of age-related complications. Humanin is a mitochondrial-derived peptide (MDP), encoded by mitochondrial DNA, playing a cytoprotective role to preserve mitochondrial function and cell viability under stressful and senescence conditions. For these reasons, humanin can be exploited in strategies aiming to counteract several processes involved in aging, including cardiovascular disease, neurodegeneration, and cancer. Relevance of these conditions to aging and disease: Senescence appears to be involved in the decay in organ and tissue function, it has also been related to the development of age-related diseases, such as cardiovascular conditions, cancer, and diabetes. In particular, senescent cells produce inflammatory cytokines and other pro-inflammatory molecules that can participate to the development of such diseases. Humanin, on the other hand, seems to contrast the development of such conditions, and it is also known to play a role in these diseases by promoting the death of damaged or malfunctioning cells and contributing to the inflammation often associated with them. Both senescence and humanin-related mechanisms are complex processes that have not been fully clarified yet. Further research is needed to thoroughly understand the role of such processes in aging and disease and identify potential interventions to target them in order to prevent or treat age-related conditions.
OBJECTIVES
This systematic review aims to assess the potential mechanisms underlying the link connecting senescence, humanin, aging, and disease.
PubMed: 37106758
DOI: 10.3390/biology12040558 -
Human & Experimental Toxicology 2023This systematic review, conducted according to the PRISMA guidelines, focuses on genotoxicity of oxidative hair dye precursors. The search for original papers published...
This systematic review, conducted according to the PRISMA guidelines, focuses on genotoxicity of oxidative hair dye precursors. The search for original papers published from 2000 to 2021 was performed in Medline, Web of Science, Cochrane registry, Scientific Committee on Consumer Safety of the European Commission and German MAK Commission opinions. Nine publications on genotoxicity of -phenylenediamine (PPD) and toluene-2,5-diamine (-toluylenediamine; PTD) were included, reporting results of 17 assays covering main genotoxicity endpoints. PPD and PTD were positive in bacterial mutation assay, and PPD tested positive also for somatic cell mutations in the Rodent assay . Clastogenicity of PPD and PTD was revealed by chromosomal aberration assay. The alkaline comet assay showed DNA damage after PPD exposure, which was not confirmed where PTD exhibited positive results. PPD induced micronucleus formation , and increased micronucleus frequencies in mice erythrocytes following high dose oral exposure . Based on the results of a limited number of data from the classical genotoxicity assay battery, this systematic review indicates genotoxic potential of hair dye precursors PPD and PTD, which may present an important health concern for consumers and in particular for professional hairdressers.
Topics: Animals; Mice; Hair Dyes; DNA Damage; Comet Assay; Mutation; Oxidative Stress
PubMed: 36879522
DOI: 10.1177/09603271231159803 -
Sultan Qaboos University Medical Journal Feb 2023This systematic review and meta-analysis aimed to assess the cytotoxic and genotoxic impacts of waterpipe smoking on oral health. The databases MEDLINE, Cochrane Library... (Meta-Analysis)
Meta-Analysis Review
This systematic review and meta-analysis aimed to assess the cytotoxic and genotoxic impacts of waterpipe smoking on oral health. The databases MEDLINE, Cochrane Library and Dimensions were searched to find studies evaluating whether waterpipe smokers exhibited any cytotoxic or genotoxic effects on their oral cells compared to non-smokers, with regard to mouth neoplasms. Particularly, changes in DNA methylation and p53 expression were assessed. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were adopted for the systematic review. Review Manager was utilised for statistical analysis with a significance level at <0.05. To assess the grades of the included articles, a risk of bias analysis was summarised. A forest plot, including some of the included articles included, was created regarding the different grades. A total of 20 studies were included in this review. The results showed that waterpipe smoking has cytotoxic and genotoxic effects on oral cells, with a risk difference of 0.16. Although the published articles are few in number, all confirm the devastating effects of waterpipe smoking related to the carcinogenicity. Waterpipe smoking is harmful to oral health. It causes a series of detrimental cellular and genetic modifications such as acanthosis, epithelial dysplasia and hyperparakeratosis. In addition, waterpipe smoke contains several carcinogenic compounds. As it releases many harmful organic compounds, waterpipe smoking increases the incidence of oral cancer.
Topics: Humans; Oral Health; Water Pipe Smoking; Antineoplastic Agents; Mouth Neoplasms; DNA Damage
PubMed: 36865434
DOI: 10.18295/squmj.6.2022.043 -
BMJ Open Feb 2023To describe and synthesise studies of SARS-CoV-2 seroprevalence by occupation prior to the widespread vaccine roll-out.
OBJECTIVE
To describe and synthesise studies of SARS-CoV-2 seroprevalence by occupation prior to the widespread vaccine roll-out.
METHODS
We identified studies of occupational seroprevalence from a living systematic review (PROSPERO CRD42020183634). Electronic databases, grey literature and news media were searched for studies published during January-December 2020. Seroprevalence estimates and a free-text description of the occupation were extracted and classified according to the Standard Occupational Classification (SOC) 2010 system using a machine-learning algorithm. Due to heterogeneity, results were synthesised narratively.
RESULTS
We identified 196 studies including 591 940 participants from 38 countries. Most studies (n=162; 83%) were conducted locally versus regionally or nationally. Sample sizes were generally small (median=220 participants per occupation) and 135 studies (69%) were at a high risk of bias. One or more estimates were available for 21/23 major SOC occupation groups, but over half of the estimates identified (n=359/600) were for healthcare-related occupations. 'Personal Care and Service Occupations' (median 22% (IQR 9-28%); n=14) had the highest median seroprevalence.
CONCLUSIONS
Many seroprevalence studies covering a broad range of occupations were published in the first year of the pandemic. Results suggest considerable differences in seroprevalence between occupations, although few large, high-quality studies were done. Well-designed studies are required to improve our understanding of the occupational risk of SARS-CoV-2 and should be considered as an element of pandemic preparedness for future respiratory pathogens.
Topics: Humans; COVID-19; SARS-CoV-2; Seroepidemiologic Studies; Algorithms; Occupations
PubMed: 36854599
DOI: 10.1136/bmjopen-2022-063771 -
BMC Oral Health Feb 2023This systematic review (SR) with meta-analysis aimed to evaluate the frequency of micronuclei in the oral mucosa exfoliated cells after cone-beam computed tomography... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
This systematic review (SR) with meta-analysis aimed to evaluate the frequency of micronuclei in the oral mucosa exfoliated cells after cone-beam computed tomography (CBCT) examination.
METHODS
We performed language-independent computer-assisted data searches using PubMed databases, Cochrane, Embase, Web of Science all databases, and Google Scholar. The literature on micronucleus (MN) frequency of clinical trials before and after CBCT examination was included. The frequency of MN in exfoliated cells of the human oral mucosa was the primary outcome of the study. All statistical analyses were performed with R (version 4.1.0), RStudio (version 2022.02.2 + 485) software, and Meta packages (version 5.2-0). Two reviewers independently assessed the quality of the included studies by the EPHPP (Effective Public Health Practice Project) Modified scale with minor modifications. The heterogeneity of the data was analyzed using I statistics, in which I > 50% was considered substantial heterogeneity.
RESULTS
A total of 559 articles were selected through the search strategy. After screening titles and abstracts, nine full-text manuscripts were assessed for eligibility, and six observational studies were included in the meta-analysis. The present study showed a significant increase in MN frequency of human oral mucosal exfoliated cells 10 days after CBCT examination compared to baseline (SMD = - 0.56, 95%-CI = - 0.99 ~ - 0.13, p = 0.01). Because of the high heterogeneity among the studies (I = 72%), after removing one study that was the main source of heterogeneity, excluding the study (I = 47%), the common-effect model was chosen, and the meta-analysis also showed that the frequency of MN in human oral mucosa exfoliated cells increased significantly 10 days after CBCT examination (SMD = - 0.35, 95%-CI = - 0.59 ~ - 0.11, p = 0.004).
CONCLUSION
This review suggested that CBCT examination increases the frequency of micronuclei in oral mucosal exfoliated cells.
Topics: Humans; Mouth Mucosa; Cone-Beam Computed Tomography; Databases, Factual
PubMed: 36841769
DOI: 10.1186/s12903-023-02832-3 -
Current Oncology (Toronto, Ont.) Feb 2023Outcomes for patients with high-grade glioma remain poor. Temozolomide (TMZ) is the only drug approved for first-line treatment of glioblastoma multiforme, the most... (Review)
Review
Outcomes for patients with high-grade glioma remain poor. Temozolomide (TMZ) is the only drug approved for first-line treatment of glioblastoma multiforme, the most aggressive form of glioma. Chronotherapy highlights the potential benefit of timed TMZ administration. This is based on pre-clinical studies of enhanced TMZ-induced glioma cytotoxicity dependent on circadian, oscillating expression of key genes involved in apoptosis, DNA damage repair, and cell-cycle mediated cell death. The current systematic review's primary aim was to evaluate the efficacy and toxicity of TMZ chronotherapy. A systemic review of literature following PRISMA guidelines looking at clinical outcomes on TMZ chronotherapy on gliomas was performed. The search in the English language included three databases (PubMed, EMBASE, and Cochrane) and five conferences from 1946 to April 2022. Two independent reviewers undertook screening, data extraction, and risk-of-bias assessment. A descriptive analysis was conducted due to limited data. Of the 269 articles screened, two unique studies were eligible and underwent abstraction for survival and toxicity findings. Both studies-one a retrospective cohort study (n = 166) and the other a prospective randomized feasibility study (n = 35)-were conducted by the same academic group and suggested a trend for improved overall survival, but possibly increased toxicity when TMZ was administered in the morning (vs. evening). There was limited evidence suggesting possible therapeutic value from administering TMZ in the morning, which may be consistent with the pre-clinical observations of the importance of the timing of TMZ administration in vitro. Larger, pragmatic, prospective randomized controlled trials are needed to ascertain the value of TMZ chronotherapy to provide optimized and equitable care for this population.
Topics: Humans; Temozolomide; Retrospective Studies; Prospective Studies; Brain Neoplasms; Glioma; Chronotherapy; Randomized Controlled Trials as Topic
PubMed: 36826108
DOI: 10.3390/curroncol30020147 -
Intermittent Fasting in Breast Cancer: A Systematic Review and Critical Update of Available Studies.Nutrients Jan 2023Breast cancer (BC) is the most-frequent malignancy amongst women, whereas obesity and excess caloric consumption increase the risk for developing the disease. The... (Review)
Review
Breast cancer (BC) is the most-frequent malignancy amongst women, whereas obesity and excess caloric consumption increase the risk for developing the disease. The objective of this systematic review was to examine the impact of intermittent fasting (IF) on previously diagnosed BC patients, regarding quality of life (QoL) scores during chemotherapy, chemotherapy-induced toxicity, radiological response and BC recurrence, endocrine-related outcomes, as well as IF-induced adverse effects in these populations. A comprehensive search was conducted between 31 December 2010 and 31 October 2022, using the PubMed, CINAHL, Cochrane, Web of Science, and Scopus databases. Two investigators independently performed abstract screenings, full-text screenings, and data extraction, and the Mixed Method Appraisal Tool (MMAT) was used to evaluate the quality of the selected studies. We screened 468 papers, 10 of which were selected for data synthesis. All patients were female adults whose age ranged between 27 and 78 years. Participants in all studies were women diagnosed with BC of one of the following stages: I, II (HER2-/+), III (HER2-/+), IV, LUMINAL-A, LUMINAL-B (HER2-/+). Notably, IF during chemotherapy was found to be feasible, safe and able to relieve chemotherapy-induced adverse effects and cytotoxicity. IF seemed to improve QoL during chemotherapy, through the reduction of fatigue, nausea and headaches, however data were characterized as low quality. IF was found to reduce chemotherapy-induced DNA damage and augmented optimal glycemic regulation, improving serum glucose, insulin, and IGF-1 concentrations. A remarkable heterogeneity of duration of dietary patterns was observed among available studies. In conclusion, we failed to identify any IF-related beneficial effects on the QoL, response after chemotherapy or related symptoms, as well as measures of tumor recurrence in BC patients. We identified a potential beneficial effect of IF on chemotherapy-induced toxicity, based on markers of DNA and leukocyte damage; however, these results were derived from three studies and require further validation. Further studies with appropriate design and larger sample sizes are warranted to elucidate its potential standard incorporation in daily clinical practice.
Topics: Adult; Aged; Female; Humans; Middle Aged; Antineoplastic Agents; Breast Neoplasms; Intermittent Fasting; Neoplasm Recurrence, Local; Quality of Life
PubMed: 36771239
DOI: 10.3390/nu15030532