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1.
Int Ophthalmol ; 44(1): 188, 2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38647698

RESUMO

PURPOSE: This study aimed to assess the association between migraine headache and glaucoma among the adult population living in Armenia. METHODS: This case-control study recruited 145 cases with glaucoma and 250 controls without glaucoma and other ocular disorders except refractive error from Optomed Canada Diagnostic Eye Center in Armenia. A structured questionnaire contained questions on socio-demographics, family history of glaucoma and stroke, ocular health, smoking, migraine, and obstructive sleep apnea. The Migraine Screening Questionnaire assessed possible migraine and the Berlin Questionnaire measured obstructive sleep apnea. RESULTS: The mean ages of cases and controls were 63.3 (SD = 12.3) and 39.5 (SD = 13.5), respectively. Females comprised 62.8% of cases and 69.1% of controls. A total of 17.8% of cases and 19.0% of controls had possible migraine. In the adjusted analysis older age (OR 1.17; 95% CI 1.12; 1.23), average/lower than average socio-economic status (OR 5.27; 95% CI 1.30; 21.3), and family history of glaucoma (OR 4.25; 95% CI 1.51; 11.9) were associated with high-tension glaucoma. CONCLUSION: Timely case detection of glaucoma among those with average/low socio-economic status and those with family history of glaucoma could prevent further progression of the disease. Further studies to explore the relationship between migraine headache and specific types of glaucoma may be worthwhile.

2.
BMJ Glob Health ; 9(2)2024 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-38325896

RESUMO

INTRODUCTION: Local coalitions can advance public health initiatives such as smoke-free air but have not been widely used or well-studied in low-income and middle-income countries. METHODS: We conducted a matched-pairs community-randomised controlled trial in 28 communities in Armenia and Georgia (N=14/country) in which we helped establish local coalitions in 2019 and provided training and technical assistance for coalition activity promoting smoke-free policy development and enforcement (2019-2021). Surveys of ~1450 households (Fall 2018, May-June 2022) were conducted to evaluate coalition impact on smoke-free policy support, smoke-free home adoption, secondhand smoke exposure (SHSe), and coalition awareness and activity exposure, using multivariable mixed modelling. RESULTS: Bivariate analyses indicated that, at follow-up versus baseline, both conditions reported greater smoke-free home rates (53.6% vs 38.5%) and fewer days of SHSe on average (~11 vs ~12 days), and that intervention versus control condition communities reported greater coalition awareness (24.3% vs 12.2%) and activity exposure (71.2% vs 64.5%). Multivariable modelling indicated that intervention (vs control) communities reported greater rates of complete smoke-free homes (adjusted Odds Ratio [aOR] 1.55, 95% confiedence interval [CI] 1.11 to 2.18, p=0.011) and coalition awareness (aOR 2.89, 95% CI 1.44 to 8.05, p=0.043) at follow-up. However, there were no intervention effects on policy support, SHSe or community-based activity exposure. CONCLUSIONS: Findings must be considered alongside several sociopolitical factors during the study, including national smoke-free policies implementation (Georgia, 2018; Armenia, 2022), these countries' participation in an international tobacco legislation initiative, the COVID-19 pandemic and regional/local war). The intervention effect on smoke-free homes is critical, as smoke-free policy implementation provides opportunities to accelerate smoke-free home adoption via local coalitions. TRIAL REGISTRATION NUMBER: NCT03447912.


Assuntos
Poluição por Fumaça de Tabaco , Humanos , Armênia , Georgia , Inquéritos e Questionários , Poluição por Fumaça de Tabaco/prevenção & controle
3.
BMJ Open ; 14(2): e080281, 2024 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-38326250

RESUMO

OBJECTIVES: This study sought to determine the prevalence and associated factors of hepatitis B virus (HBV) infection ever in life and chronic HBV infection in Armenia. DESIGN: A population-based cross-sectional seroprevalence study combined with a phone survey of tested individuals. SETTING: All administrative units of Armenia including 10 provinces and capital city Yerevan. PARTICIPANTS: The study frame was the general adult population of Armenia aged ≥18 years. PRIMARY AND SECONDARY OUTCOME MEASURES: The participants were tested for anti-HBV core antibodies (anti-HBc) and HBV surface antigen (HBsAg) using third-generation enzyme immunoassays. In case of HBsAg positivity, HBV DNA and hepatitis D virus (HDV) RNA PCR tests were performed. Risk factors of HBV infection ever in life (anti-HBc positivity) and chronic HBV infection (HBsAg positivity) were identified through fitting logistic regression models. RESULTS: The seroprevalence study included 3838 individuals 18 years and older. Of them, 90.7% (3476 individuals) responded to the phone survey. The prevalence of anti-HBc positivity was 14.1% (95% CI 13.1% to 15.2%) and HBsAg positivity 0.8% (95% CI 0.5% to 1.1%). The viral load was over 10 000 IU/mL for 7.9% of HBsAg-positive individuals. None of the participants was positive for HDV. Risk factors for HBsAg positivity included less than secondary education (aOR=6.44; 95% CI 2.2 to 19.1), current smoking (aOR=2.56; 95% CI 1.2 to 5.6), and chronic liver disease (aOR=8.44; 95% CI 3.0 to 23.7). In addition to these, risk factors for anti-HBc positivity included age (aOR=1.04; 95% CI 1.04 to 1.05), imprisonment ever in life (aOR=2.53; 95% CI 1.41 to 4.56), and poor knowledge on infectious diseases (aOR=1.32; 95% CI 1.05 to 1.67), while living in Yerevan (vs provinces) was protective (aOR=0.74; 95% CI 0.59 to 0.93). CONCLUSION: This study provided robust estimates of HBV markers among general population of Armenia. Its findings delineated the need to revise HBV testing and treatment strategies considering higher risk population groups, and improve population knowledge on HBV prevention.


Assuntos
Hepatite B Crônica , Hepatite B , Adulto , Humanos , Adolescente , Vírus da Hepatite B , Estudos Transversais , Antígenos de Superfície da Hepatite B , Prevalência , Grupos Populacionais , Estudos Soroepidemiológicos , Armênia/epidemiologia , Hepatite B/complicações , Anticorpos Anti-Hepatite B , Hepatite B Crônica/epidemiologia , Hepatite B Crônica/complicações , DNA Viral
4.
Ophthalmic Epidemiol ; 31(1): 62-69, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36872562

RESUMO

PURPOSE: This study aimed to estimate the prevalence and main causes of blindness and visual impairment in population aged 50 years and older in Armenia using Rapid Assessment of Avoidable Blindness (RAAB) methodology. METHODS: The study team randomly selected 50 clusters (each consisting of 50 people) from all 11 regions of Armenia. Data on participants' demographics, presenting visual acuity, pinhole visual acuity, principal cause of presenting visual acuity, spectacle coverage, uncorrected refractive error (URE), and presbyopia were collected using the RAAB survey form. Four teams of trained eye care professionals completed data collection in 2019. RESULTS: Overall, 2,258 people of 50 years and older participated in the study. The age- and gender- adjusted prevalence of bilateral blindness, severe and moderate visual impairment were 1.5% (95% CI: 1.0-2.1), 1.6% (95% CI: 1.0-2.2) and 6.6% (95% CI: 5.5-7.7), respectively.The main causes of blindness were cataract (43.9%) and glaucoma (17.1%). About 54.6% and 35.3% of participants had URE and uncorrected presbyopia, respectively. The prevalence of bilateral blindness and functional low vision increased with age and was the highest in participants 80 years and older. CONCLUSION: The rate of bilateral blindness was comparable with findings from countries that share similar background and confirmed that untreated cataract was the main cause of blindness. Given that cataract blindness is avoidable, strategies should be developed aiming to further increase the volume and quality of cataract care in Armenia.


Assuntos
Catarata , Presbiopia , Erros de Refração , Idoso , Humanos , Pessoa de Meia-Idade , Armênia/epidemiologia , Cegueira/epidemiologia , Cegueira/etiologia , Cegueira/prevenção & controle , Catarata/complicações , Catarata/epidemiologia , Presbiopia/complicações , Prevalência , Erros de Refração/complicações , Erros de Refração/epidemiologia , Inquéritos e Questionários , Transtornos da Visão/complicações , Masculino , Feminino
5.
Tob Induc Dis ; 21: 167, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38098749

RESUMO

INTRODUCTION: Since March 2022, Armenia introduced a comprehensive smoking ban on all types of tobacco products in indoor and outdoor areas of hospitality venues. We aimed to rapidly appraise the implementation of the ban in the dining areas of the capital Yerevan and explore any differences in compliance and enforcement patterns between indoor and outdoor areas of the venues. METHODS: We used a mixed-methods approach through quantitative air quality monitoring, qualitative observations, and in-depth interviews (IDIs). We visited one venue in each remote district of the city and more venues from the central districts that have a much higher density of dining areas. Overall, we made 24 measurements of PM2.5 particles, 24 unobtrusive observations in the 19 visited venues, and 11 IDIs with six visitors and five workers. We used Stata13 for the analysis of numerical data and completed direct deductive content analysis of the textual data. RESULTS: Active tobacco use was observed in 12 out of 24 venues (50.0%) with more cases of smoking in outdoor areas (10 out of 12; 83.3%). No warning by workers or no reports to the police were observed. We detected elevated levels of PM2.5 particles in indoor and outdoor areas. The IDIs revealed predominantly negative attitudes towards the outdoor ban and the lack of awareness of and readiness to engage in the enforcement measures. The lack of enforcement by the owners and the respective bodies was mentioned as a contributor to continued violations of the ban. The change in the dynamic and the characteristics of the visitors, cleaner air, and less unpleasant work were mentioned as important positive aftermaths of the ban. CONCLUSIONS: The Government of Armenia should enhance the monitoring and enforcement activities and organize tailored awareness-raising campaigns to inform the general public and the hospitality industry of the health and social implications of the ban.

6.
Healthcare (Basel) ; 11(17)2023 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-37685463

RESUMO

Cataract surgery helps to enhance visual function and improve the quality of life of cataract patients. The present study assessed visual outcomes and explored health-related quality of life (HRQoL) and factors associated with it following cataract surgery in Armenia. An interviewer-administered survey along with the ophthalmologic examination was conducted among 248 patients. It explored socio-demographic characteristics, use of eye care services, smoking status, comorbidities, and receiving and giving social support. A Short Form Health Survey (SF-36) was used to measure HRQoL. Simple and multivariable linear regression was used for the analysis. About 72.8% of examined eyes had good visual outcomes, while 17.7% had borderline outcomes. Poor visual outcomes were detected in 9.5% of the eyes. The mean composite SF-36 score for physical health was 50.8, while the mean composite score for mental health was 49.9. Gender, socioeconomic status, having a non-communicable disease, and receiving and giving tangible social support were significantly associated with SF-36 physical component in the adjusted analysis, while the variables which demonstrated significant association with the mental component included socioeconomic status, having a non-communicable disease, and giving tangible support. The visual outcome after cataract surgery in Armenian patients is below WHO-recommended standards. The quality of ophthalmological surgical care should be monitored to maximize the visual outcome in Armenian patients, with a focus on women, patients with poor socioeconomic status, and those with non-communicable diseases.

7.
Artigo em Inglês | MEDLINE | ID: mdl-37713644

RESUMO

CONTEXT: Despite high smoking rates, Armenia and Georgia recently adopted smoke-free policies (2022 and 2018). OBJECTIVE: We examined associations between exposure to pro-tobacco media (news opposing smoke-free policies; cigarette, e-cigarette, heated tobacco product [HTP] advertisements) and anti-tobacco media (media, community-based action) and (1) knowledge that the policies applied to alternative tobacco products (ATPs), and (2) support for the policies applying to ATPs and various settings. DESIGN: We analyzed 2022 survey data. SETTING: Data were from 28 communities in Armenia and Georgia. PARTICIPANTS: The sample comprised 1468 adults (31.6% past-month smokers). METHODS: We conducted multivariable regressions, controlling for country and sociodemographics. RESULTS: Participants were knowledgeable that the policy applied to ATPs (79.2%) and supportive of them applying to ATPs and various settings (means = 3.43 and 3.00; 1-4 = strongly support). Greater exposure to anti-tobacco media/community-based action correlated with more likely knowing that the policies applied to ATPs and greater support of the policies applying to various settings; HTP advertisement exposure correlated with less support of the policies applying to various settings. Less exposure to news opposing smoke-free policies and greater exposure to media supporting such policies correlated with greater support of the policies applying to ATPs. CONCLUSIONS: Media and community-based action may promote smoke-free policy knowledge and support. HTP advertisements may uniquely undermine smoke-free policies.

8.
Ophthalmic Epidemiol ; : 1-8, 2023 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-37592815

RESUMO

PURPOSE: This study assessed the prevalence of cataract blindness, cataract surgical coverage (CSC), effective CSC, visual outcome after cataract surgery, and barriers to cataract surgery in a population aged 50 years and older in Armenia using Rapid Assessment of Avoidable Blindness (RAAB) methodology. METHODS: The study sample included 2258 individuals aged 50 years and older who were randomly selected from 11 provinces of Armenia in 2019 following the RAAB methodology. The study team randomly selected 50 clusters, 50 people in each. The RAAB survey form was used to collect information on cataract blindness, visual outcome after cataract surgery, and barriers to cataract surgery. RESULTS: The mean age of the participants was 65.3 (SD = 9.9) ranging from 50 to 99. The majority of participants were women (65.6%). Age- and sex-adjusted prevalence of blindness due to all causes was 1.5%; of which 36.4% was bilaterally blind due to cataract. The CSC and effective CSC at a cataract surgical threshold of <6/12 were 55.1% and 24.4%, respectively. Good outcome was reported in 43.7% of eyes after cataract surgery, borderline in 37.2% of eyes, and poor outcome in 19.1%. The main barriers to cataract surgery included "cost," "need not felt," or "fear." CONCLUSION: The prevalence of cataract blindness in our study was higher compared to high-income regions and lower than estimates from South/Southeast Asia. This study suggests the urgent need to update the National Strategic Plan to prevent blindness in Armenia with a focus on improving the quality and coverage of cataract surgery.

9.
Disabil Rehabil ; : 1-8, 2023 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-37578136

RESUMO

PURPOSE: The study aimed to examine the effect of visual impairment (VI), eye diseases, and other risk factors on health-related quality of life (HRQoL) in nursing home residents in Armenia. METHODS: This cross-sectional study administered an interviewer-administered structured questionnaire to collect information about socio-demographics, chronic diseases, HRQoL, smoking, receiving and giving instrumental/emotional social support, and sleeping disorders among 313 nursing home residents. An ophthalmic examination of the participants was conducted. RESULTS: The mean age was 72.5 years, ranging from 45.5 to 91.4. Women constituted 50% of the sample. The prevalence of normal vision by presenting visual acuity with available correction was 55.3%, while VI and blindness were present in 40.8% and 3.9%, respectively. Uncorrected refractive error (URE) was found in 20% of participants. The mean HRQoL score was 51.3, ranging from 7.9 to 95.0. In the adjusted analysis, having at least one chronic non-communicable disease, sleeping disorders, eye diseases, URE, VI, blindness, and giving instrumental social support were associated with HRQoL. CONCLUSIONS: Regular eye care services could improve the eye health and HRQoL of nursing home residents. Interventions addressing vision loss and chronic non-communicable diseases could enhance the functioning and overall well-being of the target population.


Visual impairment, as a leading cause of disability in older adults, leads to reduced health-related quality of life.This study found a high prevalence of visual impairment, blindness, and uncorrected refractive errors among nursing home residents.Visual impairment, blindness, uncorrected refractive error, chronic non-communicable diseases, sleep disorders, eye diseases, and instrumental social support were associated with health-related quality of life.Regular eye screening, treatment programs, and distribution of spectacles could improve eye health and health-related quality of life in nursing home residents.

10.
PLoS Comput Biol ; 19(8): e1011365, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37578979

RESUMO

Proper characterization of cancer cell states within the tumor microenvironment is a key to accurately identifying matching experimental models and the development of precision therapies. To reconstruct this information from bulk RNA-seq profiles, we developed the XDec Simplex Mapping (XDec-SM) reference-optional deconvolution method that maps tumors and the states of constituent cells onto a biologically interpretable low-dimensional space. The method identifies gene sets informative for deconvolution from relevant single-cell profiling data when such profiles are available. When applied to breast tumors in The Cancer Genome Atlas (TCGA), XDec-SM infers the identity of constituent cell types and their proportions. XDec-SM also infers cancer cells states within individual tumors that associate with DNA methylation patterns, driver somatic mutations, pathway activation and metabolic coupling between stromal and breast cancer cells. By projecting tumors, cancer cell lines, and PDX models onto the same map, we identify in vitro and in vivo models with matching cancer cell states. Map position is also predictive of therapy response, thus opening the prospects for precision therapy informed by experiments in model systems matched to tumors in vivo by cancer cell state.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Metilação de DNA/genética , RNA-Seq , Linhagem Celular , Perfilação da Expressão Gênica , Microambiente Tumoral/genética
11.
iScience ; 26(1): 105799, 2023 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-36619972

RESUMO

Although systemic chemotherapy remains the standard of care for TNBC, even combination chemotherapy is often ineffective. The identification of biomarkers for differential chemotherapy response would allow for the selection of responsive patients, thus maximizing efficacy and minimizing toxicities. Here, we leverage TNBC PDXs to identify biomarkers of response. To demonstrate their ability to function as a preclinical cohort, PDXs were characterized using DNA sequencing, transcriptomics, and proteomics to show consistency with clinical samples. We then developed a network-based approach (CTD/WGCNA) to identify biomarkers of response to carboplatin (MSI1, TMSB15A, ARHGDIB, GGT1, SV2A, SEC14L2, SERPINI1, ADAMTS20, DGKQ) and docetaxel (c, MAGED4, CERS1, ST8SIA2, KIF24, PARPBP). CTD/WGCNA multigene biomarkers are predictive in PDX datasets (RNAseq and Affymetrix) for both taxane- (docetaxel or paclitaxel) and platinum-based (carboplatin or cisplatin) response, thereby demonstrating cross-expression platform and cross-drug class robustness. These biomarkers were also predictive in clinical datasets, thus demonstrating translational potential.

12.
iScience ; 25(10): 105249, 2022 Oct 21.
Artigo em Inglês | MEDLINE | ID: mdl-36274954

RESUMO

Most cancers harbor a diverse collection of cell types including a typically heterogeneous cancer cell fraction. To reconstruct cell-intrinsic and heterotypic interactions driving tumor progression, we combine the XDec deconvolution method with cell-type-specific gene expression correlation analysis into the XDec-CHI method. XDec-CHI identifies intra- and inter-cellular pathways using correlation and places them in the context of specific tumor subtypes, as defined by the state of constituent cancer cells. We make the method web-accessible for analysis of publicly accessible pancreatic ductal adenocarcinoma, breast, head and neck, glioblastoma, and glioma tumors. We apply the method to TCGA and ICGC datasets to identify immune-suppressive interactions within PDAC tumors that are relevant for immunotherapies targeting PD-L1. Subtype-specific interactions derived from correlative analyses validated in co-culture experiments suggest PDAC subtypes have distinct therapeutic weaknesses, with Basal-like and MSLN-high Classical B tumors most likely to respond to therapies targeting PD-L1.

13.
NPJ Breast Cancer ; 8(1): 104, 2022 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-36088362

RESUMO

TNBC is a heterogeneous subtype of breast cancer, and only a subset of TNBC can be established as PDXs. Here, we show that there is an engraftment bias toward TNBC with low levels of immune cell infiltration. Additionally, TNBC that failed to engraft show gene expression consistent with a cancer-promoting immunological state, leading us to hypothesize that the immunological state of the tumor and possibly the state of the immune system of the host may be essential for engraftment.

14.
BMJ Open ; 12(2): e055396, 2022 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-35131832

RESUMO

OBJECTIVES: Given high prevalence of smoking and secondhand smoke exposure in Armenia and Georgia and quicker implementation of tobacco legislation in Georgia versus Armenia, we examined correlates of having no/partial versus complete smoke-free home (SFH) restrictions across countries, particularly smoking characteristics, risk perceptions, social influences and public smoking restrictions. DESIGN: Cross-sectional survey study design. SETTING: 28 communities in Armenia and Georgia surveyed in 2018. PARTICIPANTS: 1456 adults ages 18-64 in Armenia (n=705) and Georgia (n=751). MEASUREMENTS: We used binary logistic regression to examine aforementioned correlates of no/partial versus complete SFH among non-smokers and smokers in Armenia and Georgia, respectively. RESULTS: Participants were an average age of 43.35, 60.5% women and 27.3% smokers. In Armenia, among non-smokers, having no/partial SFHs correlated with being men (OR=2.63, p=0.001) and having more friend smokers (OR=1.23, p=0.002); among smokers, having no/partial SFHs correlated with being unmarried (OR=10.00, p=0.001), lower quitting importance (OR=0.82, p=0.010) and less favourable smoking attitudes among friends/family/public (OR=0.48, p=0.034). In Georgia, among non-smokers, having no/partial SFHs correlated with older age (OR=1.04, p=0.002), being men (OR=5.56, p<0.001), lower SHS risk perception (OR=0.43, p<0.001), more friend smokers (OR=1.49, p=0.002) and fewer workplace (indoor) restrictions (OR=0.51, p=0.026); among smokers, having no/partial SFHs correlated with being men (OR=50.00, p<0.001), without children (OR=5.88, p<0.001), daily smoking (OR=4.30, p=0.050), lower quitting confidence (OR=0.81, p=0.004), more friend smokers (OR=1.62, p=0.038) and fewer community restrictions (OR=0.68, p=0.026). CONCLUSIONS: Private settings continue to lack smoking restrictions in Armenia and Georgia. Findings highlight the importance of social influences and comprehensive tobacco legislation, particularly smoke-free policies, in changing household smoking restrictions and behaviours. TRIAL REGISTRATION NUMBER: NCT03447912.


Assuntos
Política Antifumo , Poluição por Fumaça de Tabaco , Adolescente , Adulto , Armênia/epidemiologia , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Percepção Social , Poluição por Fumaça de Tabaco/análise , Adulto Jovem
17.
Artigo em Inglês | MEDLINE | ID: mdl-33920451

RESUMO

BACKGROUND: Perceived harm, social influences, smoke-free policies, and media exposure have been understudied in relation to tobacco-related attitudes/behaviors in aggregate or in low and middle-income countries; thus, this study examined these factors collectively in relation to smoking-related outcomes among Armenian and Georgian adults. METHODS: Using 2018 cross-sectional survey data (n = 1456), multivariable regression analyses examined these factors in relation to smoking status, perceived harm among nonsmokers, and readiness to quit and past-year quit attempts among smokers. RESULTS: Significant predictors (p < 0.05) of current smoking (27.3%) included lower perceived harm, more smoking friends, and fewer home and vehicle restrictions. Among nonsmokers, more home and restaurant/bar restrictions, fewer vehicle restrictions, greater anti-tobacco media exposure, and less pro-tobacco media exposure predicted greater perceived harm. Among smokers, greater perceived social acceptability of smoking, less anti-tobacco media exposure, and greater pro-tobacco media exposure predicted readiness to quit (12.7% of smokers). More smoking friends, more home restrictions, less anti-tobacco media exposure, and greater pro-tobacco media exposure predicted past-year quit attempts (19.2%). CONCLUSIONS: Findings support the importance of smoke-free policies but were counterintuitive regarding the roles of social and media influences, underscoring the need to better understand how to address these influences, particularly in countries with high smoking rates.


Assuntos
Política Antifumo , Poluição por Fumaça de Tabaco , Armênia/epidemiologia , Estudos Transversais , Georgia , República da Geórgia , Fumar , Poluição por Fumaça de Tabaco/efeitos adversos
18.
PLoS Comput Biol ; 17(1): e1008550, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33513132

RESUMO

We consider the following general family of algorithmic problems that arises in transcriptomics, metabolomics and other fields: given a weighted graph G and a subset of its nodes S, find subsets of S that show significant connectedness within G. A specific solution to this problem may be defined by devising a scoring function, the Maximum Clique problem being a classic example, where S includes all nodes in G and where the score is defined by the size of the largest subset of S fully connected within G. Major practical obstacles for the plethora of algorithms addressing this type of problem include computational efficiency and, particularly for more complex scores which take edge weights into account, the computational cost of permutation testing, a statistical procedure required to obtain a bound on the p-value for a connectedness score. To address these problems, we developed CTD, "Connect the Dots", a fast algorithm based on data compression that detects highly connected subsets within S. CTD provides information-theoretic upper bounds on p-values when S contains a small fraction of nodes in G without requiring computationally costly permutation testing. We apply the CTD algorithm to interpret multi-metabolite perturbations due to inborn errors of metabolism and multi-transcript perturbations associated with breast cancer in the context of disease-specific Gaussian Markov Random Field networks learned directly from respective molecular profiling data.


Assuntos
Algoritmos , Perfilação da Expressão Gênica/métodos , Teoria da Informação , Metabolômica/métodos , Gráficos por Computador , Humanos , Metaboloma/genética , Transcriptoma/genética
19.
Int J Equity Health ; 20(1): 4, 2021 01 06.
Artigo em Inglês | MEDLINE | ID: mdl-33407461

RESUMO

This paper focuses on the particular challenges in cancer prevention and control (CPC) in low- and middle-income countries (LMICs). In particular, this paper extrapolates challenges and opportunities in Armenia, which has the 2nd highest rate of cancer-related deaths in the world, the 11th highest smoking prevalence among men globally, and an evolving health system infrastructure for non-communicable disease (NCD) prevention and control, including CPC. Despite significant progress in enhancing research capacity in Armenia over the past decade, additional efforts are needed, particularly in CPC-related research. Key opportunities are to advance tobacco control and utilization of mHealth. Public health training programs remain insufficient in the area of CPC, and in-country research expertise regarding CPC and related areas (e.g., tobacco control, mHealth, policy) is limited, particularly given the need to address the diverse and complex determinants of onset, prevention, and management of cancer. Moreover, critical gaps in research dissemination and knowledge translation from evidence to policy and practice continue to exist. Thus, public health infrastructure must be enhanced, in-country CPC leaders across various relevant disciplines must be further developed and supported, and medical and public health training must more fully integrate CPC and research dissemination and translation to inform policy and practice.


Assuntos
Política de Saúde , Promoção da Saúde/métodos , Neoplasias/prevenção & controle , Doenças não Transmissíveis/prevenção & controle , Saúde Pública , Prevenção do Hábito de Fumar/métodos , Telemedicina/métodos , Uso de Tabaco/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Armênia/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/epidemiologia , Doenças não Transmissíveis/epidemiologia , Fatores de Risco
20.
J Nurs Manag ; 28(7): 1561-1569, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32715532

RESUMO

AIM: To assess the perception of the nursing profession in Armenia from the perspective of multiple stakeholders, including nurses and the general public. BACKGROUND: Nurses' role perception is a complex phenomenon defined by multiple stakeholders. METHODS: The assessment used a convergent parallel mixed-methods design, with a dominant qualitative status. We conducted the qualitative phase through focus group discussions and in-depth interviews with 235 people and collected quantitative data in a cross-sectional telephone survey with 389 participants. RESULTS: The nursing profession has been influenced by medical hierarchy and subordination, and none of the participants recognized nursing as an autonomous health care profession. The quantitative survey findings were largely consistent with the qualitative results. Our findings highlighted empathy and compassion as inherent qualities of nurses in Armenia. CONCLUSION: To change opinions about the nursing profession and highlight nurses' meaningful contribution to the provision of health care services, it is important to develop a national definition of nursing and introduce higher educational opportunities for nurses in Armenia. IMPLICATIONS FOR NURSING MANAGEMENT: The paper highlights the importance of quality education for preparing highly competent nurse managers who can become role models in promoting nurses' roles in health care systems and improving the professional and public image of nursing.


Assuntos
Enfermeiras Administradoras , Enfermeiras e Enfermeiros , Armênia , Estudos Transversais , Grupos Focais , Humanos , Papel do Profissional de Enfermagem
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