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We utilized Global Adult Tobacco Survey data to examine singlestick purchases and related demographic characteristics in 10 African countries (Botswana, Cameroon, Ethiopia, Kenya, Nigeria, Mauritania, Senegal, South Africa, Uganda and Tanzania). Results show the weighted percentages and prevalence ratios with predicted marginal means to evaluate significant differences between groups (P < 0.05). The prevalence of singlestick purchases among the 10 African countries ranged from 48.4% in South Africa to 92.0% in Tanzania. Across countries, the incidence of singlestick purchases was higher in urban areas than rural areas in Kenya; among those aged 15-24 years versus those aged 45 years and older in Botswana, Ethiopia, Mauritania, Nigeria and South Africa; and among those aged 25-44 years versus those aged 45 years and older in Botswana, South Africa and Tanzania. The incidence in Botswana was higher among adults with no formal or primary education than among those with secondary or higher education. In South Africa, the incidence was higher among adults in the middle or lower wealth index than among those in the high or highest wealth index. The findings suggest opportunities for strengthening efforts to prevent singlestick purchases through effective legislation and enforcement in line with Article 16 of the World Health Organization Framework Convention on Tobacco Control.
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SIGNIFICANCE: For decades, tobacco advertisements and promotions have been common in mass media and public places in China. In 2015, China amended the Advertising Law to prohibit the distribution of tobacco advertising, while also initiating waves of tobacco control media campaigns. This study investigates the associations between exposure to anti- and pro-smoking messages, smoking status, and people's smoking-related beliefs and willingness to support tobacco control policies. METHODS: A secondary data analysis was performed with the 2018 Global Adult Tobacco Survey of 19,376 adults aged ≥15 years in China. Anti- and pro-smoking message exposures were measured as the sum of sources (media or places) where respondents have seen the messages. Multivariable logistic regression analyses were conducted to examine the relationships among smoking status, message exposure, and the outcome variables (health harm beliefs, support for increasing tax on cigarettes, support for using part of the increased tax on tobacco control) controlling for smoking status and demographic differences. RESULTS: Overall, 63.3% of the respondents reported being exposed to anti-smoking messages from at least 1 source, while 18.1% were exposed to pro-smoking messages from at least 1 source. Adults who currently, formerly, and never smoked differed in their beliefs about smoking and willingness to support tobacco control policies. Greater reported exposure to anti-smoking messages was positively associated with belief that smoking is harmful, support for increased cigarette tax, and support for using increased tax revenue for tobacco control measures. Meanwhile, greater reported exposure to pro-smoking messages was negatively related to willingness to support cigarette tax increases. CONCLUSIONS: While national and local tobacco control campaigns in China have reached a large proportion of the adult population, there is still room for improvement. China might consider expanding anti-tobacco campaigns, as reported exposure to these messages is associated with increased public awareness of the health hazards of smoking and support for increasing cigarette taxes.
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Fumar , Humanos , Adulto , China/epidemiologia , Masculino , Feminino , Pessoa de Meia-Idade , Adolescente , Adulto Jovem , Inquéritos e Questionários , Fumar/psicologia , Fumar/epidemiologia , Publicidade , Produtos do Tabaco/economia , Produtos do Tabaco/legislação & jurisprudência , Idoso , Meios de Comunicação de Massa , Impostos , Prevenção do Hábito de Fumar/métodos , Abandono do Hábito de Fumar/psicologiaRESUMO
Metal-guided photochromic material (photochromic complex) is one of the latest versions of photo-responsive materials due to their smart behaviour and promising real-world applications. The present work explores the molecular-level origin of metal-guided photochromism using a photodynamic approach and ultrafast absorption spectroscopy, to address all existing lacunas. Here, rhodamine B (RhB) dye containing the Schiff base zinc complex is considered a representative photochromic complex for both theoretical treatment and experimental observations. Detailed theoretical studies, including geometry optimization, frontier molecular orbital (FMO) analysis, transition state (TS) identification, and natural bond orbital (NBO) analysis, along with spectral studies, are employed to investigate the photodynamic equilibrium (enol-form keto-form). This equilibrium is regulated by the interplay of intrinsic factors (push-pull effect) and extrinsic factors (such as UV-light, the phenolic-OH group, metal ions, and solvents). The potential energy surface (PES) of the photo-conversion (enol âenol*âketo*â meta-stable keto) is evaluated. While, the PES of the reversion (meta-stable keto âenol) is constructed based on the studies of thermo-reversion and photo-reversion. Finally, the theoretical findings related to the photodynamic equilibrium are validated by direct experimental evidence obtained through femtosecond transient absorption (fs-TA) spectroscopy.
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OBJECTIVES: The Ending the HIV Epidemic (EHE) initiative prioritizes treatment and prevention efforts in counties where most new HIV diagnoses occur and states with substantial incidence of new HIV diagnoses in rural areas. Understanding the characteristics of adults with HIV living in EHE priority areas, and how these characteristics compare with adults with HIV living in non-EHE priority areas, can inform EHE efforts. METHODS: We analyzed data from the 2018 Medical Monitoring Project (MMP) to understand the characteristics of adults with HIV living in 36 of 48 EHE priority counties; San Juan, Puerto Rico; and 1 of 7 EHE priority states. We calculated weighted percentages of sociodemographic characteristics, behaviors, and clinical outcomes of adults with diagnosed HIV living in MMP EHE priority areas and compared them with characteristics of adults who did not live in MMP EHE priority areas using prevalence ratios (PRs) with predicted marginal means. RESULTS: Living in an MMP EHE priority area was more common among adults who were non-Hispanic Black or Hispanic, experienced homelessness, or were food insecure compared with adults who were non-Hispanic White (59.3% and 58.4% vs 41.0%), not experiencing homelessness (60.9% vs 51.9%), or not food insecure (59.8% vs 51.0%). Adults who lived in MMP EHE priority areas were significantly less likely to be adherent to their HIV medications (PR = 0.95; 95% CI, 0.91-0.99) and durably virally suppressed (PR = 0.94; 95% CI, 0.91-0.97), and more likely to miss scheduled appointments for HIV care (PR = 1.31; 95% CI, 1.10-1.56) than adults who did not live in MMP EHE priority areas. CONCLUSION: To increase viral suppression and reduce HIV transmission, it is essential to strengthen public health efforts to improve medication and appointment adherence in this population.
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Epidemias , Infecções por HIV , Adulto , Humanos , Estados Unidos , Infecções por HIV/diagnóstico , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Epidemias/prevenção & controle , Hispânico ou Latino , População Negra , EtnicidadeRESUMO
OBJECTIVE: To evaluate whether reported prevalence of unemployment, subsistence needs, and symptoms of depression and anxiety among adults with diagnosed HIV during the COVID-19 pandemic were higher than expected. DESIGN: The Medical Monitoring Project (MMP) is a complex sample survey of adults with diagnosed HIV in the United States. METHODS: We analyzed 2015-2019 MMP data using linear regression models to calculate expected prevalence, along with corresponding prediction intervals (PI), for unemployment, subsistence needs, depression, and anxiety for June-November 2020. We then assessed whether observed estimates fell within the expected prediction interval for each characteristic, overall and among specific groups. RESULTS: Overall, the observed estimate for unemployment was higher than expected (17% vs. 12%) and exceeded the upper limit of the PI. Those living in households with incomes ≥400% of FPL were the only group where the observed prevalence of depression and anxiety during the COVID-19 period was higher than the PIs; in this group, the prevalence of depression was 9% compared with a predicted value of 5% (75% higher) and the prevalence of anxiety was 11% compared with a predicted value 5% (137% higher). We did not see elevated levels of subsistence needs, although needs were higher among Black and Hispanic compared with White persons. CONCLUSIONS: Efforts to deliver enhanced employment assistance to persons with HIV and provide screening and access to mental health services among higher income persons may be needed to mitigate the negative effects of the US COVID-19 pandemic.
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COVID-19 , Infecções por HIV , Adulto , COVID-19/epidemiologia , Depressão/epidemiologia , Depressão/psicologia , Infecções por HIV/complicações , Infecções por HIV/epidemiologia , Infecções por HIV/psicologia , Humanos , Saúde Mental , Pandemias , Desemprego , Estados Unidos/epidemiologiaRESUMO
In the United States, one in four adults is living with a disability. Age-related changes, disease-related pathology and treatments can place a person with HIV at risk for a disability. We analyzed nationally representative data to describe disability status among adults ≥18 years with diagnosed HIV in the United States and Puerto Rico by demographic characteristics, health behaviors, quality of care, clinical outcomes and mental health status. We reported weighted percentages and prevalence ratios with predicted marginal means to evaluate significant differences between groups (P < .05). Overall, 44.5% reported any disability; the most frequently reported disabilities were related to mobility (24.8%) and cognition (23.9%). Persons who lived in households at or below the poverty level or who experienced homelessness in the last 12 months reported a higher prevalence of any disability than persons who were not poor or not homeless (60.2% vs. 33.4% and 61.8% vs. 42.8%, respectively). Prevalence of depression and anxiety was higher among persons with any disability compared with those with no disability (32.8% and 26.6% versus 10.1% and 7.0%, respectively). Enhancing support from clinicians and ancillary providers may help optimize long-term health outcomes among HIV-positive persons with disabilities.
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Pessoas com Deficiência , Infecções por HIV , Pessoas Mal Alojadas , Adulto , Infecções por HIV/epidemiologia , Comportamentos Relacionados com a Saúde , Humanos , Prevalência , Estados Unidos/epidemiologiaRESUMO
OBJECTIVES: The Medical Monitoring Project (MMP) is a public health surveillance system that provides representative estimates of the experiences and behaviors of adults with diagnosed HIV in the United States. In 2015, the sample design and frame of MMP changed from a system that only included HIV patients to one that captures the experiences of persons receiving and not receiving HIV care. We describe methods investigated for calculating survey weights, the approach chosen, and the benefits of using a dynamic surveillance registry as a sampling frame. METHODS: MMP samples adults with diagnosed HIV from the National HIV Surveillance System, the HIV case surveillance registry for the United States. In the methodological study presented in this manuscript, we compared methods that account for sample design and nonresponse, including weighting class adjustment vs. propensity weighting and a single-stage nonresponse adjustment vs. sequential adjustments for noncontact and nonresponse. We investigated how best to adjust for non-coverage using surveillance data to post-stratify estimates. RESULTS: After assessing these methods, we chose as our preferred procedure weighting class adjustments and a single-stage nonresponse adjustment. Classes were constructed using variables associated with respondents' characteristics and important survey outcomes, chief among them laboratory results available from surveillance that served as a proxy for medical care. CONCLUSIONS: MMPs weighting procedures reduced sample bias by leveraging auxiliary information on medical care available from the surveillance registry sampling frame. Expanding MMPs population of focus provides important information on characteristics of persons with diagnosed HIV that complement the information provided by the surveillance registry. MMP methods can be applied to other disease registries or population-monitoring systems when more detailed information is needed for a population, with the detailed information obtained efficiently from a representative sample of the population covered by the registry.
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Atenção à Saúde , Infecções por HIV/epidemiologia , Vigilância em Saúde Pública , Adulto , Feminino , Infecções por HIV/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Estados UnidosRESUMO
BACKGROUND: Data to care (D2C) is a public health strategy that uses HIV surveillance and other data to identify persons in need of HIV medical care. The Medical Monitoring Project (MMP), which uses similar methods to contact and recruit HIV-positive persons, may inform predictors of successful contact for D2C programs. SETTING: MMP is a Centers for Disease Control and Prevention-funded surveillance system that collects nationally representative data on adults with diagnosed HIV in the United States and Puerto Rico. METHODS: Using MMP's 2016 data collection cycle, we present contact rates (ie, proportion of HIV-positive persons successfully contacted for MMP) by the age of contact information and age of laboratory test results available from HIV surveillance data. RESULTS: Nationally, 27.6% of eligible persons did not have a recorded laboratory test performed within the past year (project area range: 10.8%-54.6%). The national contact rate among persons with laboratory tests older than 1 year was 37.0% (project area range: 16.5%-67.1%). Higher contact rates were found among persons with more recent laboratory tests. Similar results were found by the age of contact information. Nationally, the most common reason for MMP ineligibility was that the person was deceased; the most common reason for not being contacted was lack of correct contact information. CONCLUSIONS: MMP findings suggest that D2C programs would benefit from efforts to improve the quality of HIV surveillance data and local surveillance practices-in particular, death ascertainment, the completeness of laboratory reporting, and the routine updating of contact information. Strengthening collaboration and integration with existing MMP programs may be beneficial.
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Infecções por HIV/epidemiologia , Vigilância da População/métodos , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Porto Rico/epidemiologia , Estados Unidos/epidemiologiaRESUMO
The innocent silicon quantum dots (SQDs) having dual emissive property (blue in VIS and red in NIR), high photostability, and freedom from auto fluorescence are designed and synthesized for the first time using ethylene glycol. A new attempt has been made for direct labeling of Alpha 2-HS-Glycoprotein (Fetuin A) through functionalization of the synthesized dots by EDC coupling. The SQDs were characterized by FTIR, TEM, AFM, XRD, EDX, DLS, and TGA. The chemistry involved in the synthesis and functionalization of dots is elucidated in detail. The synthesized SQDs are suitable for live cell imaging as well as direct labeling of the Fetuin A in the NIR region. The direct labeling technique developed for Fetuin A imaging is robust, more specific, and simple, and reduces the number of incubation and washing steps and produces better quality data compared to the conventional method using Rhodamine B.
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Pontos Quânticos/química , Silício/química , alfa-2-Glicoproteína-HS/química , Etilenoglicol/química , Humanos , Espectroscopia de Infravermelho com Transformada de Fourier , Difração de Raios XRESUMO
BACKGROUND: More than one-quarter of 2016 HIV diagnoses among blacks in the United States occurred among persons aged 15-24 years, and three-quarters were among men. Although the prevalence of viral suppression in all tests in the past 12 months (durable viral suppression) among persons receiving HIV care increased from 58% to 68% during 2009-2013, we do not know whether this same improvement was observed among young black men receiving care. METHODS: We analyzed the 2009-2014 Medical Monitoring Project data collected from 336 black men aged 18-24 years. We estimated the proportion of young black men receiving HIV care who were prescribed antiretroviral therapy (ART), adherent to ART, and durably virally suppressed. We assessed changes in clinical outcomes over time and their association with patient characteristics, health behaviors, and depression. RESULTS: During 2009-2014, 80% of young black men receiving HIV care were prescribed ART, 73% were adherent to ART, and 36% had durable viral suppression. There was no significant change in viral suppression over this period. ART prescription and durable viral suppression were significantly higher among those receiving the Ryan White HIV/AIDS Program assistance compared with those who did not. Durable viral suppression was significantly lower among those who used drugs compared with those who did not. CONCLUSIONS: Viral suppression among young black men during 2009-2014 was lower than that among the overall population receiving HIV care in 2013 (36% vs. 68%). Increasing viral suppression is essential to improve health and reduce HIV transmissions in this key population.
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Negro ou Afro-Americano/estatística & dados numéricos , Infecções por HIV/tratamento farmacológico , Adolescente , Fármacos Anti-HIV/uso terapêutico , Estudos Transversais , Humanos , Masculino , Adesão à Medicação/estatística & dados numéricos , Resultado do Tratamento , Estados Unidos , Carga Viral/estatística & dados numéricos , Adulto JovemRESUMO
Allylamine-functionalized silicon quantum dots (ASQDs) of high photostability are synthesized by a robust inverse micelle method to use the material as a fluorescent probe for selective recognition of thiocyanate (a biomarker of a smoker and a nonsmoker). The synthesized ASQDs were characterized by absorption, emission, and Fourier transform infrared spectroscopy. Surface morphology is studied by transmission electron microscopy and dynamic light scattering. The synthesized material exhibits desirable fluorescence behavior with a high quantum yield. A selective and accurate (up to 10-10 M) method of sensing of thiocyanate anion is developed based on fluorescence amplification and quenching of ASQDs. The sensing mechanism is investigated and interpreted with a crystal clear mechanistic approach through the modified Stern-Volmer plot. The developed material and the method is applied to recognize the anion in the human blood sample for identification of the degree of smoking. The material deserves high potentiality in the field of bio-medical science.
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The present work seeks to explore the antifilarial activity of biopolymer functionalized gold nanoparticles (AuNPs) against human filarial parasite (Wuchereria bancrofti) through Nrf2 signaling for the first time. A natural polymer, chitosan is used along with Terminalia chebula extract to synthesize AuNPs following the principles of green chemistry. The probable mode of action of AuNPs as filaricidal agent has been investigated in detail using model filarial parasite, Setaria cervi (bovine parasite). Biopolymers inspired AuNPs exhibit superior antifilarial activity against both human and bovine filarial parasites, and are able to induce oxidative stress and apoptotic cell death in filarial parasites mediated through mitochondria. AuNPs also alter the Nrf2 signaling. In addition, the synthesized nanomaterials appear to be nontoxic to mammalian system. Thus the present mechanistic study, targeting human filarial parasites, has the potential to increase the therapeutic prospects of AuNPs to control lymphatic filariasis in the upcoming days.
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Filaricidas/química , Ouro/química , Nanopartículas Metálicas/química , Nanomedicina/métodos , Animais , Apoptose/efeitos dos fármacos , Bovinos , Quitosana/química , Filariose/tratamento farmacológico , Filariose/parasitologia , Filaricidas/administração & dosagem , Ouro/administração & dosagem , Humanos , Nanopartículas Metálicas/administração & dosagem , Extratos Vegetais/química , Ratos Wistar , Setaria (Nematoide)/efeitos dos fármacos , Setaria (Nematoide)/fisiologia , Terminalia/química , Wuchereria bancrofti/efeitos dos fármacos , Wuchereria bancrofti/fisiologiaRESUMO
Since 2011, the Behavioral Risk Factor Surveillance System (BRFSS) has been conducting telephone surveys using landline and cell phones from all U.S. states. Due to the portability of cell phones, residents in one state can retain cell phone numbers with area codes from other states. Protocol dictates that BRFSS must interview such out-of-state respondents to complete the core BRFSS interview and collected data must then be transferred to the state of current residence. We used cell phone data from 2014 BRFSS to compare the demographic factors, health care access, health behaviors, history of chronic disease, and chronic conditions among out-of-state interview (movers) with those respondents whose cell phone numbers matched their current state of residence (did not move). The estimated weighted population percentage of movers was 10% nationwide and ranged from 1.5% in Hawaii to 21.0% in Nevada (median: 5.8%). Compared with respondents who did not move, movers were significantly more likely to be younger, white non-Hispanic, college graduate, never married, and more likely to have health care coverage. After adjusting for demographics, movers were 16% less likely to report no leisure time physical activity, 17% less likely to smoke, 7% less likely to be overweight or obese, 33% less likely to report diabetes, and 12% less likely to report having arthritis than respondents who did not move. Persons who might be left out of cell phone samples due to moving in or out of state may therefore represent a potential for bias in estimation of health behaviors and chronic conditions where transfer of data across state lines is not possible.
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PROBLEM: Chronic diseases and conditions (e.g., heart diseases, stroke, arthritis, and diabetes) are the leading causes of morbidity and mortality in the United States. These conditions are costly to the U.S. economy, yet they are often preventable or controllable. Behavioral risk factors (e.g., excessive alcohol consumption, tobacco use, poor diet, frequent mental distress, and insufficient sleep) are linked to the leading causes of morbidity and mortality. Adopting positive health behaviors (e.g., staying physically active, quitting tobacco use, obtaining routine physical checkups, and checking blood pressure and cholesterol levels) can reduce morbidity and mortality from chronic diseases and conditions. Monitoring the health risk behaviors, chronic diseases and conditions, access to health care, and use of preventive health services at multilevel public health points (states, territories, and metropolitan and micropolitan statistical areas [MMSA]) can provide important information for development and evaluation of health intervention programs. REPORTING PERIOD: 2013 and 2014. DESCRIPTION OF THE SYSTEM: The Behavioral Risk Factor Surveillance System (BRFSS) is an ongoing, state-based, random-digit-dialed telephone survey of noninstitutionalized adults aged ≥18 years residing in the United States. BRFSS collects data on health risk behaviors, chronic diseases and conditions, access to health care, and use of preventive health services and practices related to the leading causes of death and disability in the United States and participating territories. This is the first BRFSS report to include age-adjusted prevalence estimates. For 2013 and 2014, these age-adjusted prevalence estimates are presented for all 50 states, the District of Columbia, the Commonwealth of Puerto Rico, Guam, and selected MMSA. RESULTS: Age-adjusted prevalence estimates of health status indicators, health care access and preventive practices, health risk behaviors, chronic diseases and conditions, and cardiovascular conditions vary by state, territory, and MMSA. Each set of proportions presented refers to the range of age-adjusted prevalence estimates of selected BRFSS measures as reported by survey respondents. The following are estimates for 2013. Adults reporting frequent mental distress: 7.7%-15.2% in states and territories and 6.3%-19.4% in MMSA. Adults with inadequate sleep: 27.6%-49.2% in states and territories and 26.5%-44.4% in MMSA. Adults aged 18-64 years having health care coverage: 66.9%-92.4% in states and territories and 60.5%-97.6% in MMSA. Adults identifying as current cigarette smokers: 10.1%-28.8% in states and territories and 6.1%-33.6% in MMSA. Adults reporting binge drinking during the past month: 10.5%-25.2% in states and territories and 7.2%-25.3% in MMSA. Adults with obesity: 21.0%-35.2% in states and territories and 12.1%-37.1% in MMSA. Adults aged ≥45 years with some form of arthritis: 30.6%-51.0% in states and territories and 27.6%-52.4% in MMSA. Adults aged ≥45 years who have had coronary heart disease: 7.4%-17.5% in states and territories and 6.2%-20.9% in MMSA. Adults aged ≥45 years who have had a stroke: 3.1%-7.5% in states and territories and 2.3%-9.4% in MMSA. Adults with high blood pressure: 25.2%-40.1% in states and territories and 22.2%-42.2% in MMSA. Adults with high blood cholesterol: 28.8%-38.4% in states and territories and 26.3%-39.6% in MMSA. The following are estimates for 2014. Adults reporting frequent physical distress: 7.8%-16.0% in states and territories and 6.2%-18.5% in MMSA. Women aged 21-65 years who had a Papanicolaou test during the past 3 years: 67.7%-87.8% in states and territories and 68.0%-94.3% in MMSA. Adults aged 50-75 years who received colorectal cancer screening on the basis of the 2008 U.S. Preventive Services Task Force recommendation: 42.8%-76.7% in states and territories and 49.1%-79.6% in MMSA. Adults with inadequate sleep: 28.4%-48.6% in states and territories and 25.4%-45.3% in MMSA. Adults reporting binge drinking during the past month: 10.7%-25.1% in states and territories and 6.7%-26.3% in MMSA. Adults aged ≥45 years who have had coronary heart disease: 8.0%-17.1% in states and territories and 7.6%-19.2% in MMSA. Adults aged ≥45 years with some form of arthritis: 31.2%-54.7% in states and territories and 28.4%-54.7% in MMSA. Adults with obesity: 21.0%-35.9% in states and territories and 19.7%-42.5% in MMSA. INTERPRETATION: Prevalence of certain chronic diseases and conditions, health risk behaviors, and use of preventive health services varies among states, territories, and MMSA. The findings of this report highlight the need for continued monitoring of health status, health care access, health behaviors, and chronic diseases and conditions at state and local levels. PUBLIC HEALTH ACTION: State and local health departments and agencies can continue to use BRFSS data to identify populations at risk for certain unhealthy behaviors and chronic diseases and conditions. Data also can be used to design, monitor, and evaluate public health programs at state and local levels.
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Doença Crônica/epidemiologia , Comportamentos Relacionados com a Saúde , Vigilância da População , Assunção de Riscos , Adulto , Idoso , Sistema de Vigilância de Fator de Risco Comportamental , District of Columbia/epidemiologia , Feminino , Guam/epidemiologia , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Serviços Preventivos de Saúde/estatística & dados numéricos , Porto Rico/epidemiologia , Estados Unidos/epidemiologia , Adulto JovemRESUMO
The present study describes the synthesis, characterization and biological application of reduced graphene oxide - chitosan (GC) based benign supramolecular scaffold (SMS). Various spectroscopic and microscopic analyses established the supramolecular interaction in between rGO and chitosan. The active performance of the developed material towards microbial resistivity, in vitro cell growth and as a scaffold for enzyme immobilizing matrix illustrates its unique implementation. Immobilization of polyphenol oxidase (PPO) onto GC lowers the Michaelis- Menten constant (Km) value and facilitates to achieve maximum velocity at low substrate concentration. Importantly GC shows no noteworthy cytotoxicity towards Wistar rat macrophage cells. Moreover, incorporation of gold nanoparticle further strengthens the microbial resistance properties of GC as well as improves its biocompatibility by reducing cytotoxicity. Therefore these unique features may inspire it to appear in large scale for industrial utilization.
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Bacillus subtilis/crescimento & desenvolvimento , Enzimas Imobilizadas , Escherichia coli/crescimento & desenvolvimento , Ouro , Grafite , Nanopartículas Metálicas/química , Monofenol Mono-Oxigenase , Animais , Enzimas Imobilizadas/química , Enzimas Imobilizadas/farmacologia , Ouro/química , Ouro/farmacologia , Grafite/química , Grafite/farmacologia , Teste de Materiais , Monofenol Mono-Oxigenase/química , Monofenol Mono-Oxigenase/farmacologia , Ratos , Ratos WistarRESUMO
The gold nanoparticles (AuNPs) have been synthesized biogenically by using black pepper (Piper nigrum) extract according to the principles of green chemistry in presence and absence of a biopolymer, chitosan. A comprehensive study (up to cellular level) on the antifilarial (against Setaria cervi) activity of AuNPs has been made for the first time with a view to use it clinically. The bioactivity of biopolymer capped biogenic AuNP increases significantly compared to simple biogenic AuNP. The biopolymer plays an important role in inspiring AuNP through its inherent positive charges and hydrophobicity. The developed nanomaterial boosts the production of ROS (reactive oxygen species) and misbalances the antioxidant parameters of parasites such as GSH, GST, GPx, SOD and catalase. The produced ROS ultimately induces oxidative stress, which leads to apoptotic cell death in filarial worms. The synthesized nanomaterials exhibit negligible toxicity towards human PBMCs. The present study may serve as a fruitful platform to explore biopolymer capped gold nanoparticles as efficient antifilarial therapeutics.
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Anti-Helmínticos/farmacologia , Quitosana , Ouro , Nanopartículas Metálicas , Setaria (Nematoide)/efeitos dos fármacos , Animais , Biopolímeros , Células Cultivadas , Fragmentação do DNA , HumanosRESUMO
PROBLEM: Chronic diseases (e.g., heart diseases, cancer, chronic lower respiratory disease, stroke, diabetes, and arthritis) and unintentional injuries are the leading causes of morbidity and mortality in the United States. Behavioral risk factors (e.g., tobacco use, poor diet, physical inactivity, excessive alcohol consumption, failure to use seat belts, and insufficient sleep) are linked to the leading causes of death. Modifying these behavioral risk factors and using preventive health services (e.g., cancer screenings and influenza and pneumococcal vaccination of adults aged ≥65 years) can substantially reduce morbidity and mortality in the U.S. POPULATION: Continuous monitoring of these health-risk behaviors, chronic conditions, and use of preventive services are essential to the development of health promotion strategies, intervention programs, and health policies at the state, city, and county level. REPORTING PERIOD: January-December 2012. DESCRIPTION OF THE SYSTEM: The Behavioral Risk Factor Surveillance System (BRFSS) is an ongoing, state-based, random-digit-dialed landline- and cellular-telephone survey of noninstitutionalized adults aged ≥18 years residing in the United States. BRFSS collects data on health-risk behaviors, chronic diseases and conditions, access to health care, and use of preventive health services related to the leading causes of death and disability. This report presents results for all 50 states, the District of Columbia, participating U.S. territories that include the Commonwealth of Puerto Rico (Puerto Rico) and Guam, 187 Metropolitan/Micropolitan Statistical Areas (MMSAs), and 210 counties (n = 475,687 survey respondents) for the year 2012. RESULTS: In 2012, the estimated prevalence of health-risk behaviors, chronic diseases or conditions, access to health care, and use of preventive health services substantially varied by state and territory, MMSA, and county. The following portion of the abstract lists a summary of results by selected BRFSS measures. Each set of proportions refers to the range of estimated prevalence for health-risk behaviors, chronic diseases or conditions, and use of preventive health care services among geographical units, as reported by survey respondents. Adults with good or better health: 64.0%-88.3% for states and territories, 62.7%-90.5% for MMSAs, and 68.1%-92.4% for counties. Adults aged 18-64 years with health care coverage: 64.2%-93.1% for states and territories, 35.4%- 93.7% for MMSAs, and 35.4%-96.7% for counties. Adults who received a routine physical checkup during the preceding 12 months: 55.7%-80.1% for states and territories, 50.6%-85.0% for MMSAs, and 52.4%-85.0% for counties. An influenza vaccination received during the preceding 12 months among adults aged ≥65 years: 26.3%-70.1% for states and territories, 20.8%-77.8% for MMSAs, and 24.1%-77.6% for counties. Ever received pneumococcal vaccination among adults aged ≥65 years: 22.2%-76.2% for states and territories, 15.3%-83.4% for MMSAs, and 25.8%-85.2% for counties. Adults who had a dental visit in the past year: 53.7%-76.2% for states and territories, and 44.8%-81.7% for MMSAs and counties. Adults aged ≥65 years who have lost all of their natural teeth from tooth decay or gum disease: 7.0%-33.7% for states and territories, 5.8%-39.6% for MMSAs, and 5.8%-37.1% for counties. Adults aged 50-75 years who received a colorectal cancer screening on the basis of the U.S. Preventive Services Task Force recommendation: 40.0%-76.4% for states and territories, 47.1%-80.7% for MMSAs, and 47.0%-81.0% for counties. Women aged 21-65 years who had a Papanicolaou test during the preceding 3 years: 68.5% to 89.6% for states and territories, 70.3% to 92.8% for MMSAs, and 65.7%-94.6% for counties. Women aged 50-74 years who had a mammogram during the preceding 2 years: 66.5%- 89.7% for states and territories, 61.1%-91.5% for MMSAs, and 61.8%-91.6% for counties. Current cigarette smoking among adults: 10.6%-28.3% for states and territories, 5.1%-30.1% for MMSAs, and 5.1%-28.3% for counties. Binge drinking among adults during the preceding month: 10.2%-25.2% for states and territories, 6.2%-28.1% for MMSAs, and 6.2%-29.5% for counties. Heavy drinking among adults during the preceding month: 3.5%-8.5% for states and territories, 2.0%-11.0% for MMSAs, and 1.9%-11.0% for counties. Adults who reported no leisure-time physical activity: 16.3%-42.4% for states and territories, 9.2%-47.3% for MMSAs, and 9.2%-39.0% for counties. Self- reported seat belt use: 62.0%-93.7% for states and territories, 54.1%-97.1% for MMSAs, and 50.1%-97.4% for counties. Adults who were obese: 20.5%-34.7% for states and territories, 14.8%-44.5% for MMSAs and counties. Adults with diagnosed diabetes: 7.0%-16.4% for states and territories, 3.4%-17.4% for MMSAs, and 3.1%-17.4% for counties. Adults who ever had any type of cancer: 3.0%-13.7% for states and territories, 3.8%-19.2% for MMSAs, and 4.5%-19.2% for counties. Adults with current asthma: 5.8%-11.1% for states and territories, 3.1%-15.0% for MMSAs, and 3.1%-15.7% for counties. Adults with some form of arthritis: 15.6%-36.4% for states and territories, 16.8%-45.8% for MMSAs, and 14.8%-35.9% for counties. Adults having had a depressive disorder: 9.0%-23.5% for states and territories, 9.2%-28.3% for MMSAs, and 8.5%-28.4% for counties. Adults aged ≥45 years who have had coronary heart disease: 7.4%-19.0% for states and territories, 6.1%-23.3% for MMSAs, and 6.1%-20.6% for counties. Adults aged ≥45 years who have had a stroke: 3.1%-7.3% for states and territories, 2.1%-9.3% for MMSAs, and 1.5%-9.3% for counties. Adults with limited activities because of physical, mental, or emotional problems: 15.0%-28.6% for states and territories, 12.0%-31.7% for MMSAs, and 11.3%-31.7% for counties. Adults using special equipment because of any health problem: 4.8%-11.6% for states and territories, 4.0%-14.7% for MMSAs, and 2.8%-13.6% for counties. INTERPRETATION: This report underscores the need for continuous surveillance of health-risk behaviors, chronic diseases or conditions, health care access, and use of preventive care services at state and local levels. It will help to identify high-risk populations and to evaluate public health intervention programs and policies designed to reduce morbidity and mortality from chronic disease and injury. PUBLIC HEALTH ACTION: State and local health departments and agencies can continue to use BRFSS data to identify populations at high risk for unhealthy behaviors and chronic diseases or conditions, lack of health care access, and inadequate use of preventive care services. Additionally, states can use the data to design, implement, monitor, and evaluate public health programs and policies at state and local levels.
Assuntos
Doença Crônica/epidemiologia , Comportamentos Relacionados com a Saúde , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Vigilância da População , Serviços Preventivos de Saúde/estatística & dados numéricos , Adulto , Sistema de Vigilância de Fator de Risco Comportamental , Feminino , Humanos , Masculino , Estados Unidos/epidemiologiaRESUMO
Green synthesis of silver nanomaterial plays a pivotal role in the growing field of nanotechnology. Development of anti-parasitic drugs from plant metabolites has been in regular practice from the ancient period but most of them were discarded due to their inefficiency to control diseases effectively. At present, nanoparticles are used for developing anti-parasitic therapy for their unique properties such as smallest in size, bio-ability, bio-compatibility and penetration capacity into a cell. The present study aims at synthesis of silver nanoparticles (AgNPs) by using funicles extract of Acacia auriculiformis and tests its efficacy as antifilarial. Experimental evidence show that AgNPs are effective at a very low concentration compared to crude plant extracts. Synthesis of these nanoparticles is a single-step, biogenic, cost effective and eco-friendly process. Synthesized nanoparticles were characterized by UV-Vis spectroscopy, TEM, SAED, FTIR, EDX, FESEM and Z-potential. The antifilarial efficacy of AgNPs was tested against different life cycle stages of bovine filarial parasite Setaria cervi by morphological study, motility assessment and viability assay. These nanoparticles are found to have antifilarial activity with LC50 of 5.61 µg/mL and LC90 of 15.54 µg/mL against microfilaria of S. cervi. The microscopic findings and the detailed molecular studies confirmed that green synthesized AgNPs were effective enough to induce apoptosis through up regulation of ROS (reactive oxygen species).
Assuntos
Acacia/química , Apoptose/efeitos dos fármacos , Nanopartículas Metálicas/efeitos adversos , Espécies Reativas de Oxigênio/metabolismo , Setaria (Nematoide)/efeitos dos fármacos , Animais , Apoptose/fisiologia , Bovinos , Fragmentação do DNA , DNA de Helmintos/química , DNA de Helmintos/genética , Feminino , Marcação In Situ das Extremidades Cortadas , Macrófagos Peritoneais/efeitos dos fármacos , Masculino , Nanopartículas Metálicas/administração & dosagem , Nanopartículas Metálicas/toxicidade , Microscopia Eletrônica de Varredura , Espectroscopia Fotoeletrônica , Extratos Vegetais/química , Ratos , Ratos Wistar , Setaria (Nematoide)/citologia , Setaria (Nematoide)/genética , Setaria (Nematoide)/metabolismo , Setaríase/parasitologia , Prata , Espectroscopia de Infravermelho com Transformada de Fourier , Regulação para CimaRESUMO
The carbohydrate polymer inspired silver nanoparticles (AgNPs) are designed and synthesized through ultrasound assisted green process using unique combination of a biomolecule (tyrosine) and a natural polymer (starch). A comprehensive mechanistic study on the reactive oxygen species (ROS) mediated filaricidal (against Setaria cervi) and mosquitocidal (against second and fourth instar larvae of Culex quinquefasciatus) activities of AgNPs has been made for the first time for controlling filariasis by taking care of both filariid and its vector. The mechanism may help in formulating antifilarial drug based on carbohydrate polymer inspired AgNPs. The role of carbohydrate polymer in inspiring bioactivity of AgNPs has been looked into and its activities have been compared with the commercially available AgNPs. Cytotoxicity of AgNPs on macrophages of Wistar rat has been evaluated to ensure its selectivity towards filariid and larvae.
Assuntos
Inseticidas/química , Inseticidas/farmacologia , Nanopartículas Metálicas/química , Polímeros/química , Polímeros/farmacologia , Prata/química , Aedes/efeitos dos fármacos , Animais , Culex/efeitos dos fármacos , Inseticidas/efeitos adversos , Macrófagos/efeitos dos fármacos , Polímeros/efeitos adversos , Ratos , Ratos WistarRESUMO
PROBLEM: Chronic conditions (e.g., heart diseases, cerebrovascular diseases, malignant neoplasms, and diabetes), infectious diseases (e.g., influenza and pneumonia), and unintentional injuries are the leading causes of morbidity and mortality in the United States. Adopting positive health behaviors (e.g., staying physically active, quitting tobacco use, always wearing seatbelts in automobiles) and accessing preventive health-care services (e.g., getting routine physical checkups, receiving recommended vaccinations on appropriate schedules, checking blood pressure and cholesterol and maintaining them at healthy levels) can reduce morbidity and mortality from chronic and infectious diseases. Monitoring the health-risk behaviors of a community's residents as well as their participation in and access to health-care services provides information critical to the development and maintenance of intervention programs as well as the implementation of strategies and health policies that address public health problems at the levels of state and territory, metropolitan and micropolitan statistical area (MMSA), and county. REPORTING PERIOD: January-December 2011. DESCRIPTION OF THE SYSTEM: The Behavioral Risk Factor Surveillance System (BRFSS) is an ongoing, state-based, random-digit-dialed telephone survey of noninstitutionalized adults aged ≥18 years residing in the United States. BRFSS collects data on health-risk behaviors, chronic diseases and conditions, access to health care, and use of preventive health services and practices related to the leading causes of death and disabilities in the United States. In 2011, BRFSS adopted a new weighting methodology (iterative proportional fitting, or raking) and for the first time included data from respondents who solely use cellular telephones (i.e., do not use landlines). This report presents results for the year 2011 for all 50 states, the District of Columbia, and participating U.S. territories including the Commonwealth of Puerto Rico and Guam, 198 MMSAs, and 224 counties. RESULTS: In 2011, the estimated prevalence of health-risk behaviors, chronic conditions, access to health care, and use of preventive health services substantially varied by state and territory, MMSA, and county. The following portion of this abstract summarizes selected results by some BRFSS measures. Each set of proportions refers to the range of estimated prevalence of the behaviors, diseases, or use of preventive health-care services as reported by survey respondents. Adults with good or better health: 65.5%-88.0% for states and territories, 72.0%-92.4% for MMSAs, and 74.3%-94.2% for counties. Adults aged <65 years with health-care coverage: 65.4%-92.3% for states and territories, 66.8%-94.7% for MMSAs, and 61.3%-95.6% for counties. Influenza vaccination received during the preceding 12 months among adults aged ≥65 years: 28.6%-70.2% for states and territories, 42.0% -80.0% for MMSAs, and 41.1%-78.2% for counties. Adults meeting the federal physical activity recommendations for both aerobic physical activity and muscle-strengthening activity: 8.5%-27.3% for states and territories, 7.3%-32.0% for MMSAs, and 11.0%-32.0% for counties. Current cigarette smokers: 11.8%-30.5% for states and territories, 8.4%-30.6% for MMSAs, and 8.1%-35.2% for counties. Binge drinking during the last month: 10.0%-25.0% for states and territories, 7.0%-32.5% for MMSAs, and 7.0%-32.5% for counties. Adults always wearing seatbelts while driving or riding in a car: 63.9%-94.1% for states and territories, 51.8%-96.9% for MMSAs, and 51.8%-97.0% for counties. Adults aged ≥18 who were obese: 20.7%-34.9% for states and territories, 15.1%-37.2% for MMSAs, and 15.1%-41.0% for counties. Adults with diagnosed diabetes: 6.7%-13.5% for states and territories, 3.9%-15.9% for MMSAs, and 3.5%-18.3% for counties. Adults with current asthma: 4.3%-12.1% for states and territories, 2.9%-14.1% for MMSAs, and 2.9%-15.6% for counties. Adults aged ≥45 years who have had coronary heart disease: 7.1%-16.2% for states and territories, 5.0%-19.4% for MMSAs, and 3.9%-18.5% for counties. Adults using special equipment because of any health problem: 5.1%-11.3% for states and territories, 3.9%-13.2% for MMSAs, and 2.4%-14.7% for counties. INTERPRETATION: Because of the recent change in the BRFSS methodology, the results should not be compared with those from previous years. The findings in this report indicate that substantial variations exist in the reported health-risk behaviors, chronic diseases, disabilities, access to health-care services, and the use of preventive health services among U.S. adults at state and territory, MMSA, and county levels. The findings underscore the continued need for surveillance of health-risk behaviors, chronic conditions, and use of preventive health-care services as well as surveillance-informed programs designed to help improve health-related risk behaviors, levels of chronic disease and disability, and the access to and use of preventive services and health-care resources. PUBLIC HEALTH ACTION: State and local health departments and agencies can continue to use BRFSS data to identify populations at high risk for certain unhealthy behaviors and chronic conditions. Additionally, they can use the data to inform the design, implementation, direction, monitoring, and evaluation of public health programs, policies, and use of preventive services that can lead to a reduction in morbidity and mortality among U.S. residents.