Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 85
Filtrar
1.
J Am Coll Health ; : 1-7, 2024 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-38683876

RESUMO

OBJECTIVES: To examine knowledge, attitudes, beliefs, and behaviors about alternative tobacco products among American Indian tribal college students. PARTICIPANTS: One hundred and five tribal college students. METHODS: Focus groups, one interview, and demographic surveys. RESULTS: Tobacco use varied across the sample with 35.2% of the participants being users of ENDS products and 29.5% were cigarette smokers. Overall, participants viewed electronic nicotine delivery systems and chewing tobacco as primary examples of alternative tobacco products and described a generational divide between alternative and conventional tobacco product use. Alternative tobacco products were not considered suitable for use in traditional contexts. CONCLUSIONS: Previously successful cessation programs in this population have relied on cultural tailoring related to traditional tobacco use in American Indian communities. Our findings suggest that this strategy may be less effective for addressing alternative tobacco use. Reliance on the importance of family relationships may prove more impactful in future programming.

2.
Subst Abus ; 44(3): 235-240, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37675896

RESUMO

BACKGROUND: People with mental health (MH) and substance use disorders (SUD) have high rates of tobacco use and tobacco-related mortality. They want to stop smoking and studies have shown they can quit, but few behavioral health facilities provide tobacco treatment. The purpose of this paper is to describe how a midwestern statewide behavioral health collaboration used regional data to pinpoint strengths and weaknesses in tobacco treatment trends, identified policies in neighboring states that were associated with high rates of tobacco treatment, and worked with state leaders to implement these policies to enhance treatment. METHODS: We used publicly available data from 2 SAMHSA annual national surveys of MH/SUD facilities to describe tobacco treatment services and policies in behavioral health facilities in Kansas and 3 neighboring states (Missouri, Nebraska and Oklahoma). We interviewed neighboring state leaders to identify policies they had implemented to boost tobacco recovery services in behavioral health. We collaborated with our state behavioral health agency to encourage adoption of similar policies. RESULTS: Using 7 years of survey data (2014-2020), rates for screening, counseling, and medications for tobacco dependence were highest in Oklahoma and Missouri facilities. Oklahoma had the highest percentages of facilities reporting smoke-free campuses. In all states, rates of tobacco service provision and smoke-free campuses were lower among SUD facilities than in MH facilities. State leaders associated several policies with high performance, including (a) requiring programs contracting with the state to conduct screening, provide counseling, and adopt smoke-free campuses (Oklahoma and Missouri); (b) state-based collection of tobacco treatment service provision data (Oklahoma); (c) providing facilities with free NRT for clients (Oklahoma); (d) setting benchmarks for service provision (Oklahoma); (e) comprehensive Medicaid coverage of cessation medications (Missouri). Upon review of these findings, Kansas behavioral health officials adopted a 2-year process to implement similar policies and are integrating tobacco treatment requirements into the state Certified Community Behavioral Health Clinic program. CONCLUSIONS: Summarizing and sharing freely-available data across states laid the groundwork for cross-border networking and policy change. State and federal agencies should integrate these policies into contracts and block grants to reduce tobacco-related disparities among individuals with behavioral health conditions.

3.
J Biopharm Stat ; : 1-13, 2023 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-37417836

RESUMO

Clinical trials powered to detect subgroup effects provide the most reliable data on heterogeneity of treatment effect among different subpopulations. However, pre-specified subgroup analysis is not always practical and post hoc analysis results should be examined cautiously. Bayesian hierarchical modelling provides grounds for defining a controlled post hoc analysis plan that is developed after seeing outcome data for the population but before unblinding the outcome by subgroup. Using simulation based on the results from a tobacco cessation clinical trial conducted among the general population, we defined an analysis plan to assess treatment effect among American Indians and Alaska Natives (AI/AN) enrolled in the study. Patients were randomized into two arms using Bayesian adaptive design. For the opt-in arm, clinicians offered a cessation treatment plan after verifying that a patient was ready to quit. For the opt-out arm, clinicians provided all participants with free cessation medications and referred them to a Quitline. The study was powered to test a hypothesis of significantly higher quit rates for the opt-out arm at one-month post randomization. Overall, one-month abstinence rates were 15.9% and 21.5% (opt-in and opt-out arm, respectively). For AI/AN, one-month abstinence rates were 10.2% and 22.0% (opt-in and opt-out arm, respectively). The posterior probability that the abstinence rate in the treatment arm is higher is 0.96, indicating that AI/AN demonstrate response to treatment at almost the same probability as the whole population.

4.
J Am Coll Health ; 71(9): 2679-2685, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34871137

RESUMO

OBJECTIVE: Identify factors associated with perceived discrimination, including depression, body image satisfaction, body mass index (BMI), social support, stress, and self-reported social status. PARTICIPANTS: A total of 249 American Indian tribal college students. METHODS: Students were recruited for an Internet-based smoking cessation program. A total of 249 students answered the Everyday Discrimination Scale questions to assess perceived discrimination. We conducted bivariate analyses to determine potential significant associations between perceived discrimination and health outcomes at baseline. RESULTS: We found 63% of the sample reported racial discrimination. Among those who reported moderate/severe depression, 87% reported discrimination. Among those who were not satisfied with their body image, 70% reported racial discrimination. CONCLUSION: Reports of racial discrimination are highly prevalent among our participants. We found reports of discrimination are significantly associated with depression and dissatisfaction with body image. Our study highlights a high priority population that perceives racial discrimination, potentially increasing their risk for adverse health outcomes.


Assuntos
Indígenas Norte-Americanos , Discriminação Percebida , Racismo , Abandono do Hábito de Fumar , Humanos , Estudantes , Universidades , Depressão/epidemiologia , Imagem Corporal
5.
J Health Care Poor Underserved ; 32(4): 2154-2166, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34803065

RESUMO

American Indians have the highest rates of smokeless tobacco (SLT) use of any racial/ethnic group in the United States, yet no proven effective cessation programs exist for them. Because tobacco is a sacred plant to many American Indians, cessation programs must not portray it in a completely negative manner. Based on our successful All Nations Breath of Life smoking cessation program, we developed and pilot-tested the All Nations Snuff Out Smokeless (ANSOS) program. Of 48 participants who began the program, 33 completed to six months (68.8% retention rate). Among participants who completed the program, 11 (34%) self-reported abstinence. When those lost to follow-up are considered current users, the cessation rate is 22.9%. An additional 14 individuals reported decreasing use (29.2% of all participants), with an average of 3.4 days per week decrease. All Nations Snuff Out Smokeless shows promise as a culturally appropriate SLT cessation program and is ready for efficacy testing.


Assuntos
Abandono do Hábito de Fumar , Abandono do Uso de Tabaco , Tabagismo , Tabaco sem Fumaça , Humanos , Estados Unidos , Indígena Americano ou Nativo do Alasca
6.
Cureus ; 12(8): e9618, 2020 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-32923219

RESUMO

Electronic cigarettes (E-Cigs) have been advertised as a safer alternative to smoking. However, E-Cigs use, like smoking, delivers ultra-small aerosol particles, which may be associated with cardiovascular disease. This study aimed to look into the association between E-Cigs use and cardiovascular disease outcomes. The study involved self-reported data from 16,855 participants from the National Health Interview Survey data from years 2014, 2016, 2017, and 2018. Results from the logistic regression analysis report E-Cigs users had higher odds of having myocardial infarction (OR 4.09, 95% CI [1.29, 12.98], P<0.05) when compared to non-users. Dual users had higher odds of myocardial infarction (OR 5.44, 95% CI [2.90, 10.22], P<0.05), stroke (OR 2.32, 95% CI [1.44, 3.74], P<0.05), and coronary artery disease (OR 2.27, 95% CI [1.37, 2.44], P<0.05) when compared to non-users.

7.
J Community Health ; 45(4): 812-819, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32279158

RESUMO

American Indians have higher rates of smokeless tobacco (SLT) use than other racial/ethnic groups in the US, yet no efficacious cessation program exists for them. Because tobacco is a sacred plant to many American Indians, it is imperative that a program respect the scared nature of tobacco while encouraging quitting recreational use. All Nations Snuff Out Smokeless (ANSOS) was designed to help American Indian SLT users quit recreational tobacco use while still using it for traditional purposes. We pilot tested the ANSOS 6-month group-based counseling program (N = 48) and a shortened version consisting of a one-time education session (N = 80). Here, we discuss the tobacco characteristics of participants at baseline in both studies. Participants across studies were more likely to be male (74.2%) and have at least a college education (65%). Participants in the one-time education sessions were younger (age 35 vs age 39) and used SLT fewer days per week (4.9 vs 5.7). Two-thirds of those in the full program reported that they often substitute SLT in locations where smoking is not allowed compared to 26%. Participants in the education sessions were more likely to report daily use of traditional tobacco (20% versus 0%). Results suggest that dual use of SLT and cigarettes needs to be addressed, as does the use of SLT to circumvent public smoking rules. The role of traditional tobacco and its relationship to lower SLT use also warrants further investigation.


Assuntos
Abandono do Uso de Tabaco , Tabagismo/terapia , Tabaco sem Fumaça , Adulto , Aconselhamento , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Fumar/psicologia , Produtos do Tabaco , Uso de Tabaco , Tabagismo/psicologia , Indígena Americano ou Nativo do Alasca
9.
J Community Health ; 45(3): 526-533, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-31773565

RESUMO

American Indian (AI) smokeless tobacco use rates are the highest of all racial/ethnic groups within the United States. Despite this, no effective cessation program currently exists that acknowledges the cultural significance of tobacco among many American Indian tribal nations. Participants were smokeless tobacco users, over 18 years of age, and were recruited through community partners. We modified the All Nations Snuff Out Smokeless Tobacco group-based program to be delivered as a one-time education session intervention. This was delivered to 80 participants and follow-up data was collected by self-report at 6-months. The mean age of participants was 35 and most were male (70%). A majority (69%) grew up on a AI reservation; the mean age of first smokeless tobacco use was 16 years of age. Of program completers reached for 6-month post baseline, 46% reported 0 days of SLT use; 13.5% of participants reduced; while 36% reported continued daily use. In intention to treat analysis those lost to follow-up are considered current users, the quit rate was 12.5% and among those who were still using, 4.0% reduced their use. In this study, a one-time education session intervention was effective for those who prefer an individual based approach to quitting SLT use. Follow up strategies to increase participant retention at 6-months should be explored.


Assuntos
Educação em Saúde , Abandono do Uso de Tabaco , Tabagismo , Tabaco sem Fumaça , Adolescente , Adulto , Escolaridade , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Autorrelato , Uso de Tabaco , Estados Unidos , Indígena Americano ou Nativo do Alasca
10.
Nicotine Tob Res ; 20(5): 552-560, 2018 04 02.
Artigo em Inglês | MEDLINE | ID: mdl-28177511

RESUMO

Introduction: Prevalence of cigarette smoking is highest among American Indians, yet few culturally appropriate smoking cessation programs have yet been developed and tested for multi-tribal American Indian adult populations. This study examined implementation of the All Nations Breath of Life culturally tailored smoking cessation program in multi-tribal urban and suburban American Indian communities in seven locations across five states (N = 312). Methods: This single-arm study used community-based participatory research to conduct a 12-week intervention whose primary purpose was to curb commercial tobacco use among American Indians. Participants were followed through month 6 in person and month 12 via telephone. The primary outcome was continuous abstinence from recreational cigarette smoking at 6 months post-baseline, verified through voluntary provision of salivary cotinine levels. Results: At program completion (12 weeks post-baseline), 53.3% of program completers remained abstinent; labeling those lost to follow-up as smokers resulted in a 41.4% quit rate. At 6 months post-baseline (primary endpoint), 31.1% of retained participants quit smoking (p < .0001 compared to the highest quit rates among multi-tribal populations reported in the literature, 7%); final quit rate was 22.1% labeling those lost to follow-up as smokers (p = .002). Retention rate at endpoint was 71.2%. 12-month follow-up was attempted with all participants and had a retention rate of 49.0%. Of those participants reached, 34.0% were smoke-free. Conclusions: All Nations Breath of Life shows promise as a smoking cessation program for multi-tribal urban American Indian communities. It can be successfully implemented in a variety of urban settings. Implications: This is the first large feasibility study of a culturally tailored smoking cessation program for American Indians with good cessation and retention rates in a multi-tribal urban American Indian population. It shows that All Nations Breath of Life can be implemented in multiple urban settings across five states. To our knowledge, this is the first program of its kind to be implemented across multiple heterogeneous urban locations and to include salivary cotinine testing for verification of self-report data across these locations.


Assuntos
Fumar Cigarros , Indígenas Norte-Americanos/etnologia , Abandono do Hábito de Fumar/métodos , Adolescente , Adulto , Idoso , Fumar Cigarros/etnologia , Fumar Cigarros/terapia , Competência Cultural , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , População Urbana , Adulto Jovem
11.
J Health Dispar Res Pract ; 11(1): 45-55, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30906672

RESUMO

This study describes a multiphasic approach to the development of a smokeless tobacco cessation program targeted for American Indians (AI) of different tribal nations. The authors gathered formative data from a series of focus groups and interviews to investigate the knowledge, attitudes, and beliefs of AI and smokeless tobacco (SLT) use. Predominant themes emerged from four major topic areas (SLT use, initiation and barriers, policy, and program development) across both studies. This study further assessed educational materials developed for the cessation program for scientific accuracy, readability, and cultural appropriateness. Program materials were scientifically accurate and culturally appropriate. The average corrected reading grade level was 6.3 using the Fry formula and 7.1 using the SMOG formula. Based on this research, a detailed approach to formative research can be used in combination with input from community members to develop health interventions that address health disparities for a specific population.

12.
J Am Coll Health ; 66(2): 133-140, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29111947

RESUMO

OBJECTIVE: The purpose of this study was to examine knowledge, awareness, and support for campus smoke-free policies. PARTICIPANTS: 1,256 American Indian tribal college students from three tribal colleges in the Midwest and Northern Plains. METHODS: Data are from an observational cross-sectional study of American Indian tribal college students, collected through a web-based survey. RESULTS: Only 40% of tribal college students reported not being exposed to second hand smoke in the past 7 days. A majority of nonsmokers (66%) agreed or strongly agreed with having a smoke-free campus, while 34.2% of smokers also agreed or strongly agreed. Overall, more than a third (36.6%) of tribal college students were not aware of their campus smoking policies. CONCLUSIONS: Tribal campuses serving American Indian students have been much slower in adopting smoke-free campus policies. Our findings show that tribal college students would support a smoke-free campus policy.


Assuntos
Indígenas Norte-Americanos/psicologia , Política Antifumo , Prevenção do Hábito de Fumar/métodos , Fumar/psicologia , Atitude Frente a Saúde , Estudos Transversais , Feminino , Humanos , Indígenas Norte-Americanos/estatística & dados numéricos , Masculino , Fumar/epidemiologia , Estudantes/psicologia , Universidades/estatística & dados numéricos , Adulto Jovem
13.
J Community Health ; 42(6): 1133-1140, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28447180

RESUMO

Though smokeless tobacco (SLT) use has decreased in many communities, concern for American Indian (AI) SLT use remains, as this population continues to be disproportionally affected by SLT-related diseases. Tobacco has cultural significance to many AI tribes, therefore tobacco cessation messages portraying tobacco as entirely negative may be ineffective. As a part of our formative research for an SLT cessation intervention, we sought to gain a better understanding of the knowledge, attitudes, and beliefs about SLT among AI community members. We describe two independent focus group studies conducted in Montana (ten focus groups, 54 participants) and Kansas (six focus groups, 27 participants). Predominant themes emerged from three major topic areas (SLT use, program development, and recreational SLT use) during the discussions from both studies. The formative approach and data from these studies will allow us to more appropriately address SLT-related health disparities across multiple AI communities.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Indígenas Norte-Americanos/estatística & dados numéricos , Tabaco sem Fumaça , Adolescente , Adulto , Feminino , Grupos Focais , Humanos , Masculino , Adulto Jovem
14.
Artigo em Inglês | MEDLINE | ID: mdl-30637377

RESUMO

INTRODUCTION: American Indians (AI) have the highest smoking rates of any racial/ethnic group in the U.S., in addition to low success rates of tobacco cessation. The substitution of commercial tobacco for traditional tobacco may have played a role in the prevalence rates of recreational tobacco use among AI. The present study explored the impact of tribal college students' knowledge, attitudes and beliefs about traditional tobacco use on their recreational cigarette smoking behaviors. METHODS: Multiple methods were used to recruit participants attending a tribal college. A total of 101 AI tribal college students completed a demographic survey and participated in focus groups or individual interviews assessing traditional and recreational tobacco use. RESULTS: AI tribal college student's recreational smoking has an influence on various health behaviors, including poor eating habits, decreased physical activity, and elevated tobacco use in association with alcohol consumption. Differences between the use of and motivation behind smokeless tobacco and cigarette use were seen. In addition, participants reported differences between using tobacco for traditional purposes such as in ceremony or during prayer in comparison to recreational tobacco use. Conclusion: These findings highlight AI students' beliefs about recreational tobacco, smokeless tobacco, and traditional tobacco use. Differences related to behaviors associated with traditional tobacco use have important implications for future cessation efforts for AI smokers.

15.
Int J Womens Health ; 8: 453-62, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27660494

RESUMO

INTRODUCTION: Korean women are reluctant to pursue in-person smoking cessation treatment due to stigma attached to women smokers and prefer treatment such as telephone and online smoking cessation programs that they can access secretively at home. However, there is some evidence that face-to-face interaction is the most helpful intervention component for them to quit smoking. METHODS: This study is a pilot clinical trial that examined the acceptability and feasibility of a videoconferencing smoking cessation intervention for Korean American women and compared its preliminary efficacy with a telephone-based intervention. Women of Korean ethnicity were recruited nationwide in the United States and randomly assigned at a ratio of 1:1 to either a video arm or a telephone arm. Both arms received eight 30-minute weekly individualized counseling sessions of a deep cultural smoking cessation intervention and nicotine patches for 8 weeks. Participants were followed over 3 months from the quit day. RESULTS: The videoconferencing intervention was acceptable and feasible for Korean women aged <50 years, whereas it was not for older women. Self-reported abstinence was high at 67% and 48% for the video and telephone arm at 1 month post-quit, respectively. The rates declined to 33% for the video arm and 28% for the telephone arm at 3 months post-quit when salivary cotinine test was performed. CONCLUSION: Findings support that both videoconferencing and telephone counseling can be effective, and personal preference is likely an important factor in treatment matching. The deep cultural smoking cessation intervention may account for the outcomes of telephone counseling being better than prior studies in the literature for Korean women.

16.
Am J Prev Med ; 51(5): e139-e144, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27450725

RESUMO

INTRODUCTION: National data indicate a higher prevalence of obesity among American Indian (AI) populations and greater disparity of morbidity and mortality among younger age groups compared with other ethnicities. Diet and physical activity are important obesity preventive behaviors, but no published data exist that describe these behaviors in relation to obesity in AI young adults at tribal colleges. Study purposes were to: (1) identify fruit and vegetable intake and physical activity practices of AI young adults from three U.S. tribal colleges according to BMI categories; (2) identify the accuracy of body weight perceptions; and (3) identify predictor variables for weight misperception. METHODS: In this observational study during 2011-2014, a total of 1,256 participants were recruited from three participating U.S. tribal colleges to complete an online survey addressing issues related to diet, physical activity, and weight perception. Reported height and weight were used to calculate BMI categories, and differences between BMI categories were examined. Gender differences related to accuracy of weight perception by BMI categories were also examined. Analyses were conducted in 2016. RESULTS: Based on self-reported height and weight, 68% of the sample was overweight or obese (BMI ≥25) and mean BMI was 28.9 (SD=6.9). Most did not meet recommendations for fruit intake (78.7%), vegetable intake (96.6%), or physical activity (65.6%). More than half (53.7%%) who were overweight/obese underestimated their weight category. Men more often underestimated their weight category (54.2%) than women (35.1%). CONCLUSIONS: Interventions are needed to improve weight-related lifestyle behaviors of AI tribal college students.


Assuntos
Índice de Massa Corporal , Dieta/estatística & dados numéricos , Indígenas Norte-Americanos/estatística & dados numéricos , Percepção de Peso , Adolescente , Adulto , Feminino , Frutas , Humanos , Indígenas Norte-Americanos/psicologia , Masculino , Estudantes/psicologia , Estudantes/estatística & dados numéricos , Verduras , Adulto Jovem
17.
Am J Prev Med ; 51(5): 743-751, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27436332

RESUMO

INTRODUCTION: American Indians have the highest cigarette smoking prevalence of any racial/ethnic group in the U.S. There is currently no effective empirically based smoking-cessation program for American Indians. The purpose of this study was to determine if a culturally tailored smoking-cessation program, All Nations Breath of Life (ANBL), is more effective than a non-tailored cessation program among American Indian smokers. DESIGN: A multisite RCT was conducted from September 2009 to July 2014; analysis was conducted in 2015. SETTING/PARTICIPANTS: Participants were rural or reservation-based American Indian smokers aged ≥18 years. INTERVENTION: Smokers were group randomized to either the culturally tailored ANBL or non-tailored current best practices (CBP) for a total enrolled sample size of 463 (ANBL, n=243; CBP, n=220). MAIN OUTCOME MEASURES: The primary outcome of interest was salivary cotinine-verified 7-day point prevalence smoking abstinence at 6 months. Results for both responder-only and intent-to-treat analyses for self-reported and cotinine-verified abstinence are presented. RESULTS: Intention-to-treat, imputing all non-responses as smokers, the self-reported point prevalence abstinence rates at 12 weeks were 27.9% in the ANBL arm and 17.4% in the CBP arm (p=0.028). There was a statistically significant difference in self-reported 6-month intent-to-treat point prevalence abstinence rates between ANBL (20.1%) and CBP (12.0%) arms (p=0.029). None of the cotinine-verified results were statistically significant. CONCLUSIONS: The culturally tailored smoking-cessation program ANBL may or may not be an effective program in promoting cessation at 12 weeks and 6 months. Participants in the culturally tailored ANBL program were approximately twice as likely to quit smoking at 6 months compared with the CBP program, using self-reported abstinence.


Assuntos
Abandono do Hábito de Fumar/etnologia , Adulto , Feminino , Humanos , Indígenas Norte-Americanos/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Abandono do Hábito de Fumar/estatística & dados numéricos
18.
J Clin Microbiol ; 54(6): 1512-1519, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-27030491

RESUMO

Commutability of quantitative standards allows patient results to be compared across molecular diagnostic methods and laboratories. This is critical to establishing quantitative thresholds for use in clinical decision-making. A matrix effect associated with the 1st cytomegalovirus (CMV) WHO international standard (IS) was identified using the Abbott RealTime CMV assay. A commutability study was performed to compare the CMV WHO IS and patient specimens diluted in plasma and whole blood. Patient specimens showed similar CMV DNA quantitation values regardless of the diluent or extraction procedure used. The CMV WHO IS, on the other hand, exhibited a matrix effect. The CMV concentration reported for the WHO IS diluted in plasma was within the 95% prediction interval established with patient samples. In contrast, the reported DNA concentration of the CMV WHO IS diluted in whole blood was reduced approximately 0.4 log copies/ml, and values fell outside the 95% prediction interval. Calibrating the assay by using the CMV WHO IS diluted in whole blood would introduce a bias for CMV whole-blood quantitation; samples would be reported as having higher measured concentrations, by approximately 0.4 log IU/ml. Based on the commutability study with patient samples, the RealTime CMV assay was standardized based on the CMV WHO IS diluted in plasma. A revision of the instructions for use of the CMV WHO IS should be considered to alert users of the potential impact from the diluent matrix. The identification of a matrix effect with the CMV WHO IS underscores the importance of assessing commutability of the IS in order to achieve consistent results across methods.


Assuntos
Infecções por Citomegalovirus/virologia , Reação em Cadeia da Polimerase em Tempo Real/métodos , Reação em Cadeia da Polimerase em Tempo Real/normas , Padrões de Referência , Carga Viral/normas , Humanos , Projetos Piloto
19.
Mod Pathol ; 29(2): 194-208, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26743476

RESUMO

Intestinal metaplasia in gastric mucosa is considered a preneoplastic lesion that progresses to gastric cancer. However, the molecular networks underlying this lesion formation are largely unknown. NKX6.3 is known to be an important regulator in gastric mucosal epithelial differentiation. In this study, we characterized the effects of NKX6.3 that may contribute to gastric intestinal metaplasia. NKX6.3 expression was significantly reduced in gastric mucosae with intestinal metaplasia. The mRNA expression levels of both NKX6.3 and CDX2 predicted the intestinal metaplasia risk, with an area under the receiver operating characteristic curve value of 0.9414 and 0.9971, respectively. Notably, the NKX6.3 expression level was positively and inversely correlated with SOX2 and CDX2, respectively. In stable AGS(NKX6.3) and MKN1(NKX6.3) cells, NKX6.3 regulated the expression of CDX2 and SOX2 by directly binding to the promoter regions of both genes. Nuclear NKX6.3 expression was detected only in gastric epithelial cells without intestinal metaplasia. Furthermore, NKX6.3-induced TWSG1 bound to BMP4 and inhibited BMP4-binding activity to BMPR-II. These data suggest that NKX6.3 might function as a master regulator of gastric differentiation by affecting SOX2 and CDX2 expression and the NKX6.3 inactivation may result in intestinal metaplasia in gastric epithelial cells.


Assuntos
Transdiferenciação Celular , Transformação Celular Neoplásica/genética , Inativação Gênica , Proteínas de Homeodomínio/genética , Lesões Pré-Cancerosas/genética , Fatores de Transcrição SOXB1/genética , Neoplasias Gástricas/genética , Fatores de Transcrição/genética , Animais , Antígenos de Bactérias/genética , Antígenos de Bactérias/metabolismo , Área Sob a Curva , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Sítios de Ligação , Proteína Morfogenética Óssea 4/genética , Proteína Morfogenética Óssea 4/metabolismo , Fator de Transcrição CDX2 , Linhagem Celular Tumoral , Transformação Celular Neoplásica/metabolismo , Transformação Celular Neoplásica/patologia , Modelos Animais de Doenças , Feminino , Mucosa Gástrica/metabolismo , Mucosa Gástrica/microbiologia , Mucosa Gástrica/patologia , Regulação Neoplásica da Expressão Gênica , Predisposição Genética para Doença , Infecções por Helicobacter/genética , Infecções por Helicobacter/metabolismo , Infecções por Helicobacter/patologia , Helicobacter pylori/genética , Helicobacter pylori/metabolismo , Proteínas de Homeodomínio/metabolismo , Humanos , Metaplasia , Camundongos Endogâmicos C57BL , Fenótipo , Lesões Pré-Cancerosas/metabolismo , Lesões Pré-Cancerosas/microbiologia , Lesões Pré-Cancerosas/patologia , Regiões Promotoras Genéticas , Proteínas/genética , Proteínas/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Curva ROC , Medição de Risco , Fatores de Risco , Fatores de Transcrição SOXB1/metabolismo , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/microbiologia , Neoplasias Gástricas/patologia , Fatores de Transcrição/metabolismo , Transfecção
20.
Nicotine Tob Res ; 18(6): 1488-93, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26438647

RESUMO

INTRODUCTION: American Indians (AIs) have the highest cigarette smoking rates of any racial/ethnic group in the United States. Although the overall smoking prevalence in the United States for nonminority populations has decreased over the past several decades, the same pattern is not observed among AIs. The purpose of this observational study was to collect cigarette smoking and related information from American Indian tribal college students to inform tailored interventions. METHODS: We conducted a repeated cross-sectional survey of American Indian tribal college students, Tribal College Tobacco and Behavior Survey (TCTABS), with a focus on recruiting all incoming freshman at three participating tribal colleges in the Midwest and Northern Plains regions. A total of 1256 students participated in the baseline surveys between April 2011 and October 2014. RESULTS: The overall smoking prevalence of this sample was 34.7%, with differences by region (Northern Plains-44.0% and Midwest-28%). The majority, 87.5% of current smokers reported smoking 10 or less cigarettes per day, 41% reported smoking menthol cigarettes, 52% smoked Marlboro brand, and the mean age of their first cigarette was 14 years. The majority, 62% had made at least one quit attempt in the past year. The overwhelming majority of respondents, regardless of their smoking status, thought that the current smoking prevalence on campus was greater than 41% and approximately one-third believed that it was as high as 61%. CONCLUSIONS: Very few studies of smoking have been conducted in this population and results from our study confirm the need for effective interventions. IMPLICATIONS: AIs have the highest cigarette smoking rates compared to other racial/ethnic groups in the United States. Furthermore, limited studies have examined the epidemiology of cigarette smoking among tribal college students. This study addresses health disparities related to smoking among college students by examining the demographic, cultural, and environmental characteristics of smoking and quitting. Results from this study could lead to the development of a culturally-tailored smoking cessation and prevention program for American Indian tribal college students.


Assuntos
Comportamentos Relacionados com a Saúde , Indígenas Norte-Americanos/estatística & dados numéricos , Fumar/epidemiologia , Estudantes/estatística & dados numéricos , Adolescente , Adulto , Estudos Transversais , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , Estados Unidos/epidemiologia , Universidades , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA