Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 45
Filtrar
1.
Health Econ Rev ; 14(1): 3, 2024 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-38165457

RESUMO

OBJECTIVE: This study compared the clinical efficacy and cost-effectiveness of parenteral iron, using intravenous iron sucrose (IVIS) therapy against the standard regimen of oral iron (OI) therapy for managing iron-deficiency anemia (IDA) among pregnant women in a natural primary care setting in Gujarat. DESIGN: A prospective cost-effectiveness study was conducted in natural programme setting wherein 188 pregnant women in their 14 to 18 weeks with moderate and severe anemia women enrolled from two districts of Gujarat, and 142 were followed up until the post-partum phase. The intervention group comprised of 82 participants who were administered IVIS, while the comparison group comprised of 106 participants who were put on OI therapy. Hemoglobin (Hb) levels were measured at periodic intervals, first during enrollment and then during each month of pregnancy period and finally on the 42nd day of the post-natal period. OUTCOME MEASURES: Change in mean Hb level from baseline was the primary outcome, while the incidence of morbidity and mortality was a secondary outcome measure. RESULTS: The intervention group showed a significant incremental mean change in Hb level from 8.2 g/dl to 11.45 g/dl at the fourth follow-up, while the control group's mean Hb level reduced from 9.99 g/dl to 9.55 g/dl. The discounted cost per beneficiary for IVIS was US$ 87, while that for OI was US$ 49. The incremental cost-effectiveness ratio (ICER) was US$ 9.84, which is 0.049% of India's per capita GDP. CONCLUSION: IVIS therapy was more clinically effective and cost-effective than OI therapy among pregnant women for management of moderate and severe anemia.

2.
Lancet Reg Health Southeast Asia ; 20: 100328, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38130600

RESUMO

Background: Ambient air pollution and household environmental factors affect child health, particularly in low-income and middle-income countries. This study aimed to investigate the association between ambient air pollution (PM2·5) levels, socio-environmental factors (including household wealth, housing quality measures, smoking status), and the occurrence of respiratory illness in Indian children. Methods: In this retrospective and observational study, we analysed data from India's National Family Health Survey (NFHS-5, 2019-2021) combined with NASA's Global Annual PM2·5 Grids database. Bivariate and multivariable generalized additive models were employed to examine associations between key social-environmental factors and respiratory illness in children younger than 5 years. Findings: We analysed data from 224,214 children younger than 5 years, representing 165,561 families from 29,757 geographic clusters. Our results showed extremely high annual PM2·5 levels throughout India (median 63·4·g/m3, IQR 41·9-81·6), with higher exposure for rural and impoverished families. In bivariate analyses, PM2·5 was significantly associated with reported respiratory illness (p < 0·001). Using generalized additive models and after accounting for key social and environmental factors, a monotonic increasing and non-linear relationship was observed between PM2·5 and respiratory illness (p < 0·001), with increased likelihood of illness observed even at values near and below India's National Ambient Air Quality Standards of 40 µg/m3. Interpretation: The study highlights the significant association of social-environmental conditions with health outcomes among young children in India. Efforts specifically targeting ambient air pollution and child health during monsoon season could have significant health benefits among this population and help achieve the goal of ending preventable deaths of children younger than 5 years. Funding: National Institutes of Health (NIH T-32-HL139443-3).

3.
Gut ; 73(1): 175-185, 2023 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-37918889

RESUMO

The gastrointestinal ecosystem has received the most attention when examining the contributions of the human microbiome to health and disease. This concentration of effort is logical due to the overwhelming abundance of microbes in the gut coupled with the relative ease of sampling compared with other organs. However, the intestines are intimately connected to multiple extraintestinal organs, providing an opportunity for homeostatic microbial colonisation and pathogenesis in organs traditionally thought to be sterile or only transiently harbouring microbiota. These habitats are challenging to sample, and their low microbial biomass among large amounts of host tissue can make study challenging. Nevertheless, recent findings have shown that many extraintestinal organs that are intimately linked to the gut harbour stable microbiomes, which are colonised from the gut in selective manners and have highlighted not just the influence of the bacteriome but that of the mycobiome and virome on oncogenesis and health.


Assuntos
Microbioma Gastrointestinal , Microbiota , Micobioma , Neoplasias , Humanos , Viroma , Neoplasias/etiologia
5.
Cureus ; 14(8): e28565, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36185907

RESUMO

Introduction Anemia is an important public health concern, affecting almost 25% of the global population. In India, these statistics are even more worrisome with more than half of the children, non-pregnant and pregnant women being affected by the disease. Though the major cause of anemia is iron deficiency, other causes cannot be neglected considering the magnitude of the problem. The present study was designed to estimate the prevalence of non-iron deficiency anemia (NIDA) in Devbhoomi Dwarka District of Gujarat. Methods For this cross-sectional study, total of 258 mothers (antenatal and postnatal) were enrolled from 27 primary health centers. Apart from demographic details and obstetric history, hemoglobin and ferritin levels were measured from the participant's blood after obtaining consent. Clinical information such as the history of recent illness and fever were also noted through questionnaires. Prevalence was anemia was calculated using a standard threshold of blood hemoglobin and NIDM was defined using ferritin levels. Results As per hemoglobin levels, anemia was present in 65.9% of the mothers, which was relatively higher in antenatal women (90%) as compared to postnatal women (57%). Ferritin levels showed that out of this total anemic mothers, 61.8% (105/258) have normal ferritin levels indicating the presence of non-iron deficiency. Trimester-wise analysis of anemia in AN showed that NIDM prevalence increases with increasing trimester in contrast to IDA where a considerable reduction was found with iron supplementation. Conclusion The study indicated that two out of every three women were anemic and only one out of four were anemic with depleted iron storage. These findings have important policy implications as in India the anemia control programs address only iron deficiency anemia and not NIDA. The development of a framework for diagnosis and appropriate treatment can be recommended for integration into national guidelines.

6.
Cell ; 185(20): 3648-3651, 2022 09 29.
Artigo em Inglês | MEDLINE | ID: mdl-36179665

RESUMO

Distinct fungal communities or "mycobiomes" have been found in individual tumor types and are known to contribute to carcinogenesis. Two new studies present a comprehensive picture of the tumor-associated mycobiomes from a variety of human cancers. These studies reveal that fungi, although in low abundance, are ubiquitous across all major human cancers and that specific mycobiome types can be predictive of survival.


Assuntos
Micobioma , Neoplasias , Fungos , Humanos
7.
J Family Med Prim Care ; 11(5): 1683-1701, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35800501

RESUMO

Yoga is recognized and practiced for different levels of prevention since antiquity. The current scoping review aimed to identify and document the evidence reporting the effect of yoga interventions on immunity against COVID-19 infection. Three databases--PubMed, Cochrane, and Google Scholar, were searched to identify eligible studies. Articles published in English after 2010 and assessing the impact of any form of yoga (such as yogasanas, meditations, or pranayamas) on immunological markers were included in the review. The studies without information of the intervention on immunity markers, and experience sharing reviews were excluded. The search yielded 45 eligible articles with majority of the studies being published from the USA and India. Most of the studies were randomized controlled trials, enrolling the adult population with a specific focus on diseases like HIV, cancer, and heart failure. It was observed that a variety of yoga interventions along with meditation and pranayama, in different combinations were used by the authors. However, all these studies unanimously reported improvement in immunological profile (indicated by improved biochemical markers) of an individual (irrespective of disease state and type) with yoga. Moreover, the beneficial effects of these traditional Indian interventions were also found to have a positive impact on overall physical and physiological wellbeing and quality of life. Findings from the existing literature indicate that the practice of yoga has the potential to strengthen cell-mediated immunity and hence could be used as an effective preventive measure against COVID-19 where immunity plays a critical role.

8.
Cancer Cell ; 40(2): 120-122, 2022 02 14.
Artigo em Inglês | MEDLINE | ID: mdl-35167821

RESUMO

In this issue of Cancer Cell, Aftab et al. identify a pro-inflammatory cytokine, IL-33, that is released as a chemoattractant for type 2 immune cells in response to the intratumoral mycobiome. Depletion of fungi or deletion of IL-33 in cancer cells significantly decreases pancreatic ductal adenocarcinoma (PDAC) tumor progression and increases survival.


Assuntos
Carcinoma Ductal Pancreático , Micobioma , Neoplasias Pancreáticas , Carcinoma Ductal Pancreático/metabolismo , Humanos , Micobioma/imunologia , Neoplasias Pancreáticas/metabolismo
9.
mBio ; 13(1): e0007522, 2022 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-35189698

RESUMO

Electronic cigarettes (e-cigs) have become prevalent as an alternative to conventional cigarette smoking, particularly in youth. E-cig aerosols contain unique chemicals which alter the oral microbiome and promote dysbiosis in ways we are just beginning to investigate. We conducted a 6-month longitudinal study involving 84 subjects who were either e-cig users, conventional smokers, or nonsmokers. Periodontal condition, cytokine levels, and subgingival microbial community composition were assessed, with periodontal, clinical, and cytokine measures reflecting cohort habit and positively correlating with pathogenic taxa (e.g., Treponema, Saccharibacteria, and Porphyromonas). α-Diversity increased similarly across cohorts longitudinally, yet each cohort maintained a unique microbiome. The e-cig microbiome shared many characteristics with the microbiome of conventional smokers and some with nonsmokers, yet it maintained a unique subgingival microbial community enriched in Fusobacterium and Bacteroidales (G-2). Our data suggest that e-cig use promotes a unique periodontal microbiome, existing as a stable heterogeneous state between those of conventional smokers and nonsmokers and presenting unique oral health challenges. IMPORTANCE Electronic cigarette (e-cig) use is gaining in popularity and is often perceived as a healthier alternative to conventional smoking. Yet there is little evidence of the effects of long-term use of e-cigs on oral health. Conventional cigarette smoking is a prominent risk factor for the development of periodontitis, an oral disease affecting nearly half of adults over 30 years of age in the United States. Periodontitis is initiated through a disturbance in the microbial biofilm communities inhabiting the unique space between teeth and gingival tissues. This disturbance instigates host inflammatory and immune responses and, if left untreated, leads to tooth and bone loss and systemic diseases. We found that the e-cig user's periodontal microbiome is unique, eliciting unique host responses. Yet some similarities to the microbiomes of both conventional smokers and nonsmokers exist, with strikingly more in common with that of cigarette smokers, suggesting that there is a unique periodontal risk associated with e-cig use.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Microbiota , Periodonto , Vaping , Adulto , Citocinas , Humanos , Estudos Longitudinais , Periodontite , Periodonto/microbiologia
10.
Mol Oral Microbiol ; 37(2): 63-76, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34997976

RESUMO

The effect of electronic cigarette (e-cigarette) smoking, especially its long-term impact on oral health, is poorly understood. Here, we conducted a longitudinal clinical study with two study visits, 6 months apart, to investigate the effect of e-cigarette use on the bacterial community structure in the saliva of 101 periodontitis patients. Our data demonstrated that e-cigarette use altered the oral microbiome in periodontitis patients, enriching members of the Filifactor, Treponema, and Fusobacterium taxa. For patients at the same periodontal disease stage, cigarette smokers and e-cigarette smokers shared more similarities in their oral bacterial composition. E-cigarette smoking may have a similar potential as cigarette smoking at altering the bacterial composition of saliva over time, leading to an increase in the relative abundance of periodontal disease-associated pathogens such as Porphyromonas gingivalis and Fusobacterium nucleatum. The correlation analysis showed that certain genera, such as Dialister, Selenomonas, and Leptotrichia in the e-cigarette smoking group, were positively correlated with the levels of proinflammatory cytokines, including IFN-γ, IL-1ß, and TNF-α. E-cigarette use was also associated with elevated levels of proinflammatory cytokines such as IFN-γ and TNF-α, which contribute to oral microbiome dysbiosis and advanced disease state.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Doenças Periodontais , Periodontite , Vaping , Citocinas , Humanos , Periodontite/microbiologia , Porphyromonas gingivalis , Fator de Necrose Tumoral alfa
11.
J Family Med Prim Care ; 11(11): 6759-6764, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36993009

RESUMO

Background: Dietary habits and physical inactivity are related to the risks of non-communicable diseases (NCDs), such as cardiovascular diseases, Diabetes and Hypertension, of which burdens are increasing all over the world. . It is essential that lifestyle modification and nondrug treatment measures such as health education, reduction in weight through regular exercise, changing in eating patterns is essential to control of Diabetes and Hypertension. Hence the present study is taken up with objectives. Objectives: 1. to assess and compare the impact of health education on life style modification (diet modification) on control of hypertension and diabetes of intervention group. 2. To assess and compare the practice of changed pattern of life style modification (diet modification) of known hypertensives and diabetics with continuous health education module and follow up. Methodology: This community-level education intervention trial to reduce the burden of Non communicable diseases (hypertension and diabetes) was conducted in coastal Karnataka. The study was taken up in a rural area of coastal Karnataka . A specific module for physical activity, diet modification separately for hypertension and diabetics was prepared by experts and this specific module trained social worker introduced diet modification, exercise pattern and habits to the village enrolled participants with involvement of family member who actually cooks at home for 2 months. Results: In the study subjects, it was observed that, the subjects who had higher systolic and diastolic pressure before intervention, changed to the lower levels after intervention. Though the change in blood pressure is not statistically significant. The intervention of overall lifestyle intervention, there was increased subjects with Hb1Ac in the range of 7-9% and reduced subjects with Hb1Ac of >9.1%. Though it was not statistically significant. There was significant improvement in the mean duration of physical activity in order to control the hypertension and Diabetes mellitus. We also noticed that there was reduction in the sedentary hours, though the difference was not statistically significant. Conclusion: Life style intervention with continuous monitoring is essential to bring down the blood pressure and diabetic sugars. We donot need doctors alone to bring the life style modifications and the health workers can initiate it in the villages. The intervention of life style modifications have brought in better care and quality of life in the villages compared to control village.

12.
Indian J Community Med ; 46(3): 396-400, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34759474

RESUMO

Breast cancer is one of the most common and feared cancers. The incidence of breast cancer is persistently on the rise due to urbanization and lifestyle changes. Breast cancer cannot be prevented fully but can be effectively treated and controlled if risk factors are determined accurately. Detection of breast cancer at an early stage along with the advancement in treatment options has provided a greater chance of survival. OBJECTIVES: The objective of the study was (a) To determine the most common risk factors of breast cancer in women and (b) to identify the risk ratio of dietary risk factors among breast cancer patients. METHODOLOGY: A hospital-based case-control study was conducted at a tertiary care center in coastal Karnataka, India. RESULTS: Total 240 participants were included in the study, 120 cases and 120 controls, who were matched by ± 2-year age range. All the study participants were between 34 and 70 years of age group; the occurrence of breast cancer was found more among females within the normal range of body mass index and with a history of breast cancer among first-degree relatives. A statistically significant association was found with consumption of red meat, fatty food consumption, and bad dietary habit. CONCLUSION: High fat-low fiber diet is the most important risk factor for breast Cancer.

13.
Am J Physiol Gastrointest Liver Physiol ; 321(2): G213-G222, 2021 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-34231392

RESUMO

Advances in -omics analyses have tremendously enhanced our understanding of the role of the microbiome in human health and disease. Most research is focused on the bacteriome, but scientists have now realized the significance of the virome and microbial dysbiosis as well, particularly in noninfectious diseases such as cancer. In this review, we summarize the role of mycobiome in tumorigenesis, with a dismal prognosis, and attention to pancreatic ductal adenocarcinoma (PDAC). We also discuss bacterial and mycobial interactions to the host's immune response that is prevalently responsible for resistance to cancer therapy, including immunotherapy. We reported that the Malassezia species associated with scalp and skin infections, colonize in human PDAC tumors and accelerate tumorigenesis via activating the C3 complement-mannose-binding lectin (MBL) pathway. PDAC tumors thrive in an immunosuppressive microenvironment with desmoplastic stroma and a dysbiotic microbiome. Host-microbiome interactions in the tumor milieu pose a significant threat in driving the indolent immune behavior of the tumor. Microbial intervention in multimodal cancer therapy is a promising novel approach to modify an immunotolerant ("cold") tumor microenvironment to an immunocompetent ("hot") milieu that is effective in eliminating tumorigenesis.


Assuntos
Adenocarcinoma/microbiologia , Carcinogênese , Micobioma/imunologia , Neoplasias Pancreáticas/microbiologia , Adenocarcinoma/imunologia , Adenocarcinoma/terapia , Animais , Humanos , Imunoterapia/métodos , Neoplasias Pancreáticas/imunologia , Neoplasias Pancreáticas/terapia
14.
BMJ Open ; 11(6): e044712, 2021 06 30.
Artigo em Inglês | MEDLINE | ID: mdl-34193482

RESUMO

INTRODUCTION: Maternal anaemia is a major public health issue in India. The government of India recommends parenteral iron to manage moderate and severe grades of anaemia. In contrast to its clinical efficacy, the cost-effectiveness of intravenous iron sucrose and ferric carboxymaltose is not yet established in Indian context. This article illustrates the protocol of health technology assessment to evaluate the cost-effectiveness of intravenous therapy on the improvement of haemoglobin concentration over oral therapy. METHODS AND ANALYSIS: The study will be carried out in two districts of Gujarat state. The study participants will be selected by a proportionate sampling method from the rural, tribal, desert and coastal region of the districts. Data will be collected over 1 year on key outcome indicators using a mixed-method approach. Key informant interviews will be conducted, and cost data will be gathered to perform cost-effectiveness analysis. ETHICS AND DISSEMINATION: This study is approved by the Technical Appraisal Committee of Health Technology Assessment India, Department of Health Research and Institutional Ethics Committee of the Indian Institute of Public Health, Gandhinagar.


Assuntos
Anemia Ferropriva , Anemia , Anemia/tratamento farmacológico , Anemia Ferropriva/tratamento farmacológico , Análise Custo-Benefício , Feminino , Humanos , Índia , Ferro , Gravidez , Gestantes
15.
Front Pediatr ; 9: 647925, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34055688

RESUMO

The use of electronic cigarettes (e-cigarettes) and vaping among adolescents has risen exponentially in the last decade. E-cigarette flavors has driven adolescents to use these convenient, USB-like devices, designed to create a desired social image, while being seemingly unaware of the serious health consequences of their behavior. Vaping impacts protective pulmonary barriers by attenuating the mucociliary clearance and by increasing peribronchial inflammation and fibrosis. The recent SARS-CoV-2 (COVID-19) pandemic has been characterized by a plethora of unusual disease presentations. Among them, a unique presentation seen exclusively in children and adolescents was multisystem inflammatory syndrome (MIS-C). Seventy percent of adolescents who had MIS-C also had acute respiratory distress syndrome (ARDS), and we speculate that there may exist common denominator that links MIS-C and adolescents: the use of e-cigarettes. The virus targets the angiotensin converting receptor (ACE receptor), and studies have shown nicotine-based e-cigarettes or vaping cause oxidative stress and resulting in the upregulation of ACE2, which might worsen ARDS in MIS-C. Our mini-review highlights that adolescents using e-cigarette have alterations in their pulmonary defenses against SARS-CoV-2: an upregulation of the ACE2 receptors, the primary target of SARS-CoV-2. Their compromised immune system makes them more uniquely vulnerable to Covid-19 related MIS-C, increasing their risk for ARDS and related morbidities. Currently, studies have shown an association between MIS-C and vaping, we speculate that adolescents who vape/smoke might be especially vulnerable to serious respiratory symptoms if they develop a hyper-inflammatory state MIS-C.

16.
Alzheimers Dement (Amst) ; 13(1): e12172, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33869725

RESUMO

INTRODUCTION: Periodontal disease is a chronic, inflammatory bacterial dysbiosis that is associated with both Alzheimer's disease (AD) and Down syndrome. METHODS: A total of 48 elderly cognitively normal subjects were evaluated for differences in subgingival periodontal bacteria (assayed by 16S rRNA sequencing) between cerebrospinal fluid (CSF) biomarker groups of amyloid and neurofibrillary pathology. A dysbiotic index (DI) was defined at the genus level as the abundance ratio of known periodontal bacteria to healthy bacteria. Analysis of variance/analysis of covariance (ANOVA/ANCOVA), linear discriminant effect-size analyses (LEfSe) were used to determine the bacterial genera and species differences between the CSF biomarker groups. RESULTS: At genera and species levels, higher subgingival periodontal dysbiosis was associated with reduced CSF amyloid beta (Aß)42 (P = 0.02 and 0.01) but not with P-tau. DISCUSSION: We show a selective relationship between periodontal disease bacterial dysbiosis and CSF biomarkers of amyloidosis, but not for tau. Further modeling is needed to establish the direct link between oral bacteria and Aß.

17.
Front Oral Health ; 2: 729144, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-35048050

RESUMO

Introduction: Tobacco use is one of the main causes of periodontitis. E-cigarette are gaining in popularity, and studies are needed to better understand the impact of e-cigarettes on oral health. Objective: To perform a longitudinal study to evaluate the adverse effects of e-cigarettes on periodontal health. Methods: Naïve E-cigarette users, cigarette smokers, and non-smokers were recruited using newspaper and social media. Age, gender, and ethnicity, were recorded. Participants were scheduled for two visits 6 months apart. At each visit, we collected data on the frequency and magnitude of e-cigarette and cigarette use, and alcohol consumption. Carbon monoxide (CO) levels, cotinine levels, salivary flow rate, periodontal probing depth (PD), bleeding on probing (BoP), and clinical attachment loss (CAL) were also determined at both baseline and follow-up visits and compared between groups with two-way repeated measures ANOVA. Periodontal diagnosis and other categorical variables were compared between groups with the chi-square statistic and logistic regression. Results: We screened 159 subjects and recruited 119 subjects. One-hundred-one subjects (31 cigarette smokers, 32 e-cigarette smokers, and 38 non-smokers) completed every assessment in both visits. The retention and compliance rate of subjects was 84.9%. The use of social media and craigslist was significant in recruiting e-cigarette subjects. Ethnicity and race differed between groups, as did average age in the male subjects. Carbon monoxide and salivary cotinine levels were highest among cigarette smokers. Bleeding on probing and average PDs similarly increased over time in all three groups, but CAL uniquely increased in e-cigarette smokers. Rates of severe periodontal disease were higher in cigarette smokers and e-cigarette users than non-smokers, but interpretation is confounded by the older age of the cigarette smokers. Conclusion: Among the recruited participants, CAL after 6 months was significantly worse only in the e-cigarette smokers. This study design and protocol will assist in future larger studies on e-cigarette and oral health.

18.
J Gastrointest Surg ; 25(7): 1885-1895, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-32989690

RESUMO

The microbiome plays a major role in human physiology by influencing obesity, inducing inflammation, and impacting cancer therapies. During the 60th Annual Meeting of the Society of the Alimentary Tract (SSAT) at the State-of-the-Art Conference, experts in the field discussed the influence of the microbiome. This paper is a summary of the influence of the microbiome on obesity, inflammatory bowel disease, pancreatic cancer, cancer therapies, and gastrointestinal optimization. This review shows how the microbiome plays an important role in the development of diseases and surgical complications. Future studies are needed in targeting the gut microbiome to develop individualized therapies.


Assuntos
Microbioma Gastrointestinal , Doenças Inflamatórias Intestinais , Microbiota , Humanos , Doenças Inflamatórias Intestinais/terapia , Obesidade
19.
BMC Public Health ; 20(1): 1518, 2020 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-33032554

RESUMO

BACKGROUND: Many researchers claim electronic cigarettes (e-cigarettes) to be a breakthrough invention for tobacco users that aspires to curb their addiction to conventional cigarettes. Claimed to be safer by their promoters, these smokeless devices have become increasingly popular since their arrival on the market among users of all ages, especially adolescents. This paper investigated the trends in e-cigarette usage since the time it arrived in the United States, highlighting the highest surge that has occurred in adolescent e-cigarette use. It also aimed to understand the reasons and perceptions behind the ever-increasing use of e-cigarettes by adolescents. MAIN BODY: With the advent of e-cigarettes and common positive perceptions regarding their use, we are at risk of reversing the years of efforts regarding tobacco control and instead advance towards a new addiction with currently unknown long-term health hazards. There is substantial data showing a significant increase of e-cigarette users in the United States, especially among adolescents. The aim of this review was to explore the reasons behind this widespread increase in the use of e-cigarettes among the teenage population in the US and also to uncover the common perceptions about these new electronic delivery systems. In addition, this review attempted to summarize health benefits and hazards associated with e-cigarette use as it crucial to have the right information among its users regarding the health effects of e-cigarette use. CONCLUSION: E-cigarettes are more appealing than c-cigarettes for a variety of reasons, including cost, choice of different flavors, ease of accessibility, and use and impact of social media. There are also different perceptions among e-cigarette users, including both adolescents and adults. The former group may use them because of the sense of fashion associated with this novel device, and the latter might intend to quit conventional/combustible cigarettes (c-cigarettes) by switching to e-cigarettes. However, it is important to note that e-cigarettes are a recent phenomenon; therefore, there is a lack of many long-term studies that can identify future health risks associated with e-cigarette use. We need more detailed studies that focus on the long-term health effects of e-cigarette use. Moreover, with the ever-increasing usage of e-cigarettes by adolescents (10 and 19 years), it is very important that e-cigarettes be incorporated into the current tobacco-free laws and ordinances. We conclude by stating that e-cigarettes need stronger regulations to prevent youth access and use.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Produtos do Tabaco , Vaping , Adolescente , Adulto , Humanos , Percepção , Fumantes , Estados Unidos/epidemiologia , Vaping/efeitos adversos
20.
Genes (Basel) ; 11(10)2020 10 13.
Artigo em Inglês | MEDLINE | ID: mdl-33066102

RESUMO

Epigenetic alterations, such as histone methylations, affect the pathogenesis of tumors including prostate cancer (PCa). Previously, we reported that metformin reduced SUV39H1, a histone methyltransferase of H3 Lys9, to inhibit the migration of PCa cells. Since histone methylation is functionally linked to DNA methylation, we speculate that the knockout of the SUV39H1 gene will affect the genomic DNA methylation profile to regulate PCa cell migration and invasion. The genome-wide DNA methylation level is lower in SUV39H1 knockout (KO) cells than wild-type (WT) ones. However, the methylation levels in functional regions of CpG Islands (CGI), 5' untranslated region (UTR5), and exon regions are higher in KO cells than WT cells. Analysis of differentially methylated regions (DMRs) identified 1241 DMR genes that have differential methylation on CG sites when comparing the KO and WT samples. Gene ontology enrichment and Kyoto Encyclopedia of Genes and Genomes Pathways analysis showed that knockout of SUV39H1 affects gene sets and pathways that are heavily involved in cell shapes, cell recognition, adhesion, motility, and migration. Our study suggests that SUV39H1 plays an important role in PCa migration via the epigenetic regulation of methylation on CG sites, and is a novel and legitimate target to inhibit PCa cell migration.


Assuntos
Metilação de DNA , Epigênese Genética , Regulação Neoplásica da Expressão Gênica , Genoma Humano , Metiltransferases/antagonistas & inibidores , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia , Proteínas Repressoras/antagonistas & inibidores , Movimento Celular , Proliferação de Células , Ilhas de CpG , Humanos , Masculino , Metiltransferases/genética , Proteínas Repressoras/genética , Células Tumorais Cultivadas
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA