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1.
BMC Psychiatry ; 24(1): 237, 2024 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-38549096

RESUMEN

BACKGROUND: There is growing evidence that Technology Assisted Sexual Abuse (TASA) represents a serious problem for large numbers of children. To date, there are very few evidence-based interventions available to young people (YP) after they have been exposed to this form of abuse, and access to support services remains a challenge. Digital tools such as smartphones have the potential to increase access to mental health support and may provide an opportunity for YP to both manage their distress and reduce the possibility of further victimization. The current study explores the acceptability of a digital health intervention (DHI; the i-Minds app) which is a theory-driven, co-produced, mentalization-based DHI designed for YP aged 12-18 who have experienced TASA. METHODS: Semi-structured interviews were conducted with 15 YP recruited through Child and Adolescent Mental Health Services, a Sexual Assault Referral Centre and an e-therapy provider who had access to the i-Minds app as part of a feasibility clinical trial. Interviews focused on the acceptability and usability of i-Minds and were coded to themes based on the Acceptability of Healthcare Interventions framework. RESULTS: All participants found the i-Minds app acceptable. Many aspects of the app were seen as enjoyable and useful in helping YP understand their abuse, manage feelings, and change behavior. The app was seen as usable and easy to navigate, but for some participants the level of text was problematic and aspects of the content was, at times, emotionally distressing at times. CONCLUSIONS: The i-Minds app is useful in the management of TASA and helping change some risk-related vulnerabilities. The app was designed, developed and evaluated with YP who had experienced TASA and this may account for the high levels of acceptability seen. TRIAL REGISTRATION: The trial was registered on the ISRCTN registry on the 12/04/2022 as i-Minds: a digital intervention for young people exposed to online sexual abuse (ISRCTN43130832).


Asunto(s)
Salud Digital , Servicios de Salud Mental , Adolescente , Niño , Humanos , Salud Mental , Teléfono Inteligente
2.
J Clin Gastroenterol ; 2023 Nov 03.
Artículo en Inglés | MEDLINE | ID: mdl-37983815

RESUMEN

BACKGROUND: Liver biopsy is the gold standard to evaluate hepatic fibrosis; however, it has many drawbacks, especially in patients with severe obesity. Noninvasive testing such as the FIB-4 score is increasingly being used as the initial screening tool to identify patients at risk for advanced fibrosis. The broader applicability of FIB-4 and the precision of its cutoff values remain uncertain in metabolic dysfunction-associated steatotic liver disease and patients with severe obesity. Our study explored the correlation between FIB-4 scores and intraoperative liver biopsy in patients with severe obesity undergoing bariatric surgery. METHODS: A total of 632 patients with severe obesity underwent preoperative vibration-controlled transient elastography and intraoperative liver biopsy during bariatric surgery from January 2020 to August 2021. Variables collected included patient demographics, laboratory values, abdominal ultrasound, vibration-controlled transient elastography, and liver biopsy results. ANOVA 1-way test, χ2 tests, and Fisher exact tests were used for quantitative and qualitative variables, respectively. The 95% CIs for the mean FIB-4 scores were used to generate surrogate cutoff values. The proposed FIB-4 cutoffs for F0-1, F2, F3, and F4 were 0.62 (CI: 0.59, 0.64), 0.88 (0.74, 1.01), 1.24 (0.94, 1.54), and 1.53 (0.82, 2.24), respectively. Area under the curve (AUC) methods were used to compare traditional to proposed cutoff values. RESULTS: Applying the traditional FIB-4 cutoffs to approximate advanced fibrosis yielded an AUC of 0.5748. Use of the proposed FIB-4 cutoffs increased the AUC to 0.6899. The proposed FIB-4 cutoffs correctly identified 40 patients with biopsy-proven advanced fibrosis (F3-F4), all of which would have been missed using traditional cutoffs. CONCLUSION: Our study revealed that the use of the currently accepted FIB-4 cutoffs as the screening modality for identifying patients with advanced fibrosis due to metabolic dysfunction-associated steatotic liver disease is insufficient and will result in missing patients with histologically confirmed advanced fibrosis. Use of the revised FIB-4 scores should be considered to diagnose patients with severe obesity at high risk of liver disease progression.

3.
Int J Mol Sci ; 25(1)2023 Dec 20.
Artículo en Inglés | MEDLINE | ID: mdl-38203243

RESUMEN

Small extracellular vesicles (sEVs) contain microRNAs (miRNAs) which have potential to act as disease-specific biomarkers. The current study uses an established method to maintain human thyroid tissue ex vivo on a tissue-on-chip device, allowing the collection, isolation and interrogation of the sEVs released directly from thyroid tissue. sEVs were analysed for differences in miRNA levels released from benign thyroid tissue, Graves' disease tissue and papillary thyroid cancer (PTC), using miRNA sequencing and quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) to identify potential biomarkers of disease. Thyroid biopsies from patients with benign tissue (n = 5), Graves' disease (n = 5) and PTC (n = 5) were perfused with medium containing sEV-depleted serum for 6 days on the tissue-on-chip device. During incubation, the effluents were collected and ultracentrifuged to isolate sEVs; miRNA was extracted and sequenced (miRNASeq). Out of the 15 samples, 14 passed the quality control and miRNASeq analysis detected significantly higher expression of miR-375-3p, miR-7-5p, miR-382-5p and miR-127-3p in the sEVs isolated from Graves' tissue compared to those from benign tissue (false discovery rate; FDR p < 0.05). Similarly, miR-375-3p and miR-7-5p were also detected at a higher level in the Graves' tissue sEVs compared to the PTC tissue sEVs (FDR p < 0.05). No significant differences were observed between miRNA in sEVs from PTC vs. those from benign tissue. These results were supported by Quantitative Reverse Transcriptase Polymerase Chain Reaction (qRT-PCR). The novel findings demonstrate that the tissue-on-chip technology is a robust method for isolating sEVs directly from the tissue of interest, which has permitted the identification of four miRNAs, with which further investigation could be used as biomarkers or therapeutic targets within thyroid disease.


Asunto(s)
Vesículas Extracelulares , Enfermedad de Graves , MicroARNs , Enfermedades de la Tiroides , Neoplasias de la Tiroides , Humanos , MicroARNs/genética , Enfermedades de la Tiroides/diagnóstico , Enfermedades de la Tiroides/genética , Control de Calidad , Biomarcadores , Vesículas Extracelulares/genética , Cáncer Papilar Tiroideo
4.
J Clin Gastroenterol ; 56(3): e171-e175, 2022 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-34653062

RESUMEN

BACKGROUND AND AIM: The third leading preventable cause of death in the United States is excessive alcohol consumption. Our study sought to assess the impact of the coronavirus disease 2019 (COVID-19) on hospitalizations for alcohol-related hepatitis at a community hospital system. We hypothesized an increase in cases of alcohol-related hepatitis requiring inpatient management, mirroring the strain on economic and societal norms imposed by the COVID-19 pandemic. APPROACH/RESULTS: We performed a retrospective chart review to study the incidence of alcohol-related hepatitis in patients presenting to 3 community hospitals in Fresno, California, before and during the COVID-19. Data including patient demographics, markers of disease severity, and clinical course were extracted from electronic medical records for 329 patients included in the study. There was a 51% increase in the overall incidence of alcohol-related hepatitis requiring hospitalization between 2019 and 2020 (P=0.003) and 69% increase (P<0.001) after implementation of the stay-at-home orders. In addition, 94% (P=0.028) increase in rehospitalizations was noted in 2020 (P=0.028), a 100% increase in patients under the age of 40 (P=0.0028), as well as a trend towards a 125% increase (P=0.06) of female patients admitted with this diagnosis during the COVID-19 pandemic. CONCLUSIONS: Our study revealed drastic increases in severe alcohol-related hepatitis requiring inpatient management, specifically in patients under the age of 40 and in women during the COVID-19 pandemic. Given the high morbidity and mortality associated with severe alcohol-related hepatitis, these findings have far-reaching and lasting implications for our already strained health care system extending beyond the COVID-19 pandemic timeframe. Urgent public health interventions are needed to combat the rising misuse of alcohol and its consequences.


Asunto(s)
COVID-19 , Hepatitis Alcohólica , Femenino , Hepatitis Alcohólica/epidemiología , Humanos , Pandemias , Estudios Retrospectivos , SARS-CoV-2 , Estados Unidos/epidemiología
5.
Matern Child Health J ; 25(7): 1147-1155, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33909207

RESUMEN

BACKGROUND: Underserved subgroups are less likely to have optimal health prior to pregnancy. We describe preconception health indicators (behavior, pregnancy intention, and obesity) among pregnant Latina women with and without chronic stress in metro Atlanta. DESIGN: We surveyed 110 pregnant Latina women enrolled in prenatal care at three clinics in Atlanta. The survey assessed chronic stress, pregnancy intention, preconception behavior changes (taking folic acid or prenatal vitamins, seeking healthcare advice, any reduction in smoking or drinking), and previous trauma. RESULTS: Specific behaviors to improve health prior to pregnancy were uncommon (e.g., taking vitamins (25.5%) or improving nutrition (20.9%)). Just under half of women were experiencing a chronic stressor at the time of conception (49.5%). Chronically stressed women were more likely to be obese (aOR: 3.0 (1.2, 7.4)), less likely to intend their pregnancy (aOR: 0.3 (0.1, 0.7)), and possibly less likely to report any PHB (45.5% vs. 57.4%; aOR: 0.5 (0.2-1.1)). CONCLUSIONS: Chronically stress women were less likely to enter prenatal care with optimal health. However, preconception behaviors were uncommon overall.


Asunto(s)
Atención Preconceptiva , Atención Prenatal , Femenino , Hispánicos o Latinos , Humanos , Embarazo , Mujeres Embarazadas , Prohibitinas , Fumar
6.
N Engl J Med ; 376(4): 342-353, 2017 01 26.
Artículo en Inglés | MEDLINE | ID: mdl-28121512

RESUMEN

BACKGROUND: Noncigarette tobacco products are evolving rapidly, with increasing popularity in the United States. METHODS: We present prevalence estimates for 12 types of tobacco products, using data from 45,971 adult and youth participants (≥12 years of age) from Wave 1 (September 2013 through December 2014) of the Population Assessment of Tobacco and Health (PATH) Study, a large, nationally representative, longitudinal study of tobacco use and health in the United States. Participants were asked about their use of cigarettes, e-cigarettes, traditional cigars, cigarillos, filtered cigars, pipe tobacco, hookah, snus pouches, other smokeless tobacco, dissolvable tobacco, bidis, and kreteks. Estimates of the prevalence of use for each product were determined according to use category (e.g., current use or use in the previous 30 days) and demographic subgroup, and the prevalence of multiple-product use was explored. RESULTS: More than a quarter (27.6%) of adults were current users of at least one type of tobacco product in 2013 and 2014, although the prevalence varied depending on use category. A total of 8.9% of youths had used a tobacco product in the previous 30 days; 1.6% of youths were daily users. Approximately 40% of tobacco users, adults and youths alike, used multiple tobacco products; cigarettes plus e-cigarettes was the most common combination. Young adults (18 to 24 years of age), male adults and youths, members of racial minorities, and members of sexual minorities generally had higher use of tobacco than their counterparts. CONCLUSIONS: During this study, 28% of U.S. adults were current users of tobacco, and 9% of youths had used tobacco in the previous 30 days. Use of multiple products was common among tobacco users. These findings will serve as baseline data to examine between-person differences and within-person changes over time in the use of tobacco products. (Funded by the National Institute on Drug Abuse and the Food and Drug Administration.).


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina/estadística & datos numéricos , Fumar/epidemiología , Productos de Tabaco/estadística & datos numéricos , Adolescente , Adulto , Anciano , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estados Unidos/epidemiología , Adulto Joven
7.
J Vasc Interv Radiol ; 31(8): 1292-1299, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32654960

RESUMEN

PURPOSE: To assess the use of opioid analgesics and/or antiemetic drugs for pain and nausea following selective chemoembolization with doxorubicin-based conventional (c)-transarterial chemoembolization versus drug-eluting embolic (DEE)-transarterial chemoembolization for hepatocellular carcinoma (HCC). MATERIALS AND METHODS: From October 2014 to 2016, 283 patients underwent 393 selective chemoembolization procedures including 188 patients (48%) who underwent c-transarterial chemoembolization and 205 (52%) who underwent DEE-transarterial chemoembolization. Medical records for all patients were retrospectively reviewed. Administration of postprocedural opioid and/or antiemetic agents were collated. Time of administration was stratified as phase 1 recovery (0-6 hours) and observation (6-24 hours). Logistic regression model was used to investigate the relationship of transarterial chemoembolization type and use of intravenous and/or oral analgesic and antiemetic medications while controlling for other clinical variables. RESULTS: More patients treated with DEE-transarterial chemoembolization required intravenous analgesia in the observation (6-24 hours) phase (18.5%) than those treated with c-transarterial chemoembolization (10.6%; P = .033). Similar results were noted for oral analgesic agents (50.2% vs. 31.4%, respectively; P < .001) and antiemetics (17.1% vs. 7.5%, respectively; P = .006) during the observation period. Multivariate regression models identified DEE-transarterial chemoembolization as an independent predictor for oral analgesia (odds ratio [OR], 1.84; P = .011), for intravenous and oral analgesia in opioid-naïve patients (OR, 2.46; P = .029) and for antiemetics (OR, 2.56; P = .011). CONCLUSIONS: Compared to c-transarterial chemoembolization, DEE-transarterial chemoembolization required greater amounts of opioid analgesic and antiemetic agents 6-24 hours after the procedure. Surgical data indicate that a persistent opioid habit can develop even after minor surgeries, therefore, caution should be exercised, and a regimen of nonopiate pain medications should be considered to reduce postprocedural pain after transarterial chemoembolization.


Asunto(s)
Analgésicos Opioides/administración & dosificación , Carcinoma Hepatocelular/tratamiento farmacológico , Quimioembolización Terapéutica , Neoplasias Hepáticas/tratamiento farmacológico , Dolor/prevención & control , Adulto , Anciano , Anciano de 80 o más Años , Analgésicos Opioides/efectos adversos , Antieméticos/administración & dosificación , Antieméticos/efectos adversos , Carcinoma Hepatocelular/patología , Quimioembolización Terapéutica/efectos adversos , Femenino , Humanos , Neoplasias Hepáticas/patología , Masculino , Persona de Mediana Edad , Náusea/inducido químicamente , Náusea/prevención & control , Dolor/diagnóstico , Dolor/etiología , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Vómitos/inducido químicamente , Vómitos/prevención & control
8.
Tob Control ; 29(4): 432-446, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-31542778

RESUMEN

BACKGROUND: Most youth and young adult (YA) tobacco users use flavoured products; however, little is known about specific flavours used. METHODS: We report flavour types among US tobacco users from the Population Assessment of Tobacco and Health Study, wave 2, 2014-2015. At wave 2, we examined (1) flavour use and type at past 30-day use; (2) new flavoured tobacco product use and type; (3) product-specific flavour patterns across youth (ages 12-17) (n=920), YA (18-24) (n=3726) and adult (25+) (n=10 346) past 30-day and new tobacco users and (4) concordance between self-coded and expert-coded brand flavour type among all adults (18+). RESULTS: Prevalence of flavoured tobacco product use was highest among youth, followed by YA and adult 25+ any tobacco users. Within each age group, flavoured use was greatest among hookah, e-cigarette and snus users. Overall, menthol/mint, fruit and candy/sweet were the most prevalent flavour types at first and past 30-day use across age groups. For past 30-day use, all flavour types except menthol/mint exhibited an inverse age gradient, with more prevalent use among youth and YAs, followed by adults 25+. Prevalence of menthol/mint use was high (over 50% youth, YAs; 76% adults 25+) and exhibited a positive age gradient overall, though the reverse for cigarettes. Brand-categorised and self-reported flavour use measures among adults 18+ were moderately to substantially concordant across most products. CONCLUSIONS: Common flavours like menthol/mint, fruit and candy/sweet enhance appeal to young tobacco users. Information on flavour types used by product and age can inform tobacco flavour regulations to addess flavour appeal especially among youth.


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina/estadística & datos numéricos , Aromatizantes , Estado de Salud , Vigilancia de la Población , Uso de Tabaco/tendencias , Vapeo/epidemiología , Vapeo/tendencias , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Predicción , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Encuestas y Cuestionarios , Estados Unidos , Adulto Joven
9.
Am J Primatol ; 82(9): e23178, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32700383

RESUMEN

While the process of habituation is essential for researchers to observe primates in their natural habitats, ethical dilemmas may arise from its consequences. We collected data from 286 participants via an online survey to investigate: (a) how primatologists perceive their ethical duties toward their subjects; (b) the extent to which primatologists are concerned about the potential ethical consequences of habituation; and (c) the methods primatologists use to reduce potential harms caused by habituation. Overall, primatologists felt an extremely strong duty to mitigate harms that they may cause (e.g., to not stress individuals during observation, treat injuries, and reunite separated individuals) and expressed very high concern for habituation's potential to increase the vulnerability of their subjects to poaching and disease transfer. Ratings for those items were so high that they could not be included in subsequent exploratory factor analyses that were designed to reveal constructs underlying respondents' ratings of their ethical duties and concerns. Factor analysis of ratings of ethical duties revealed that primatologists reported a strong duty to mitigate harms caused by other humans and a lower perceived duty to mitigate naturally occurring harmful events. Factor analysis on ethical concern ratings revealed that respondents were concerned about harms during the habituation process, the presence of unhabituated behavior after habituation had been established, and indirect harms of habituation. Concerns for unhabituated behavior and indirect harms were rated slightly higher than concern for harms during the habituation process. To mitigate potential harms, primatologists primarily reported engaging in strategies to reduce stress in their subjects. Our findings reveal a disconnect between primatologists' ratings of their ethical concerns and their reported mitigation practices that may, in part, stem from gaps in knowledge about the true impacts of habituation. We suggest areas of discussion and research in the field necessary to address those gaps.


Asunto(s)
Ética en Investigación , Habituación Psicofisiológica/ética , Primates/fisiología , Animales , Actividades Humanas , Humanos , Encuestas y Cuestionarios , Zoología/ética
10.
BMC Cancer ; 19(1): 259, 2019 Mar 22.
Artículo en Inglés | MEDLINE | ID: mdl-30902086

RESUMEN

BACKGROUND: Though the management of malignancies has improved vastly in recent years, many treatment options lack the desired efficacy and fail to adequately augment patient morbidity and mortality. It is increasingly clear that patient response to therapy is unique to each individual, necessitating personalised, or 'precision' medical care. This demand extends to thyroid cancer; ~ 10% patients fail to respond to radioiodine treatment due to loss of phenotypic differentiation, exposing the patient to unnecessary ionising radiation, as well as delaying treatment with alternative therapies. METHODS: Human thyroid tissue (n = 23, malignant and benign) was live-sliced (5 mm diameter × 350-500 µm thickness) then analysed or incorporated into a microfluidic culture device for 96 h (37 °C). Successful maintenance of tissue was verified by histological (H&E), flow cytometric propidium iodide or trypan blue uptake, immunohistochemical (Ki67 detection/ BrdU incorporation) and functional analysis (thyroxine [T4] output) in addition to analysis of culture effluent for the cell death markers lactate dehydrogenase (LDH) and dead-cell protease (DCP). Apoptosis was investigated by Terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL). Differentiation was assessed by evaluation of thyroid transcription factor (TTF1) and sodium iodide symporter (NIS) expression (western blotting). RESULTS: Maintenance of gross tissue architecture was observed. Analysis of dissociated primary thyroid cells using flow cytometry both prior to and post culture demonstrated no significant change in the proportion of viable cells. LDH and DCP release from on-chip thyroid tissue indicated that after an initial raised level of release, signifying cellular damage, detectable levels dropped markedly. A significant increase in apoptosis (p < 0.01) was observed after tissue was perfused with etoposide and JNK inhibitor, but not in control tissue incubated for the same time period. No significant difference in Ki-67 positivity or TTF1/NIS expression was detected between fresh and post-culture thyroid tissue samples, moreover BrdU positive nuclei indicated on-chip cellular proliferation. Cultured thyroid explants were functionally viable as determined by production of T4 throughout the culture period. CONCLUSIONS: The described microfluidic platform can maintain the viability of thyroid tissue slices ex vivo for a minimum of four days, providing a platform for the assessment of thyroid tissue radioiodine sensitivity/adjuvant therapies in real time.


Asunto(s)
Antineoplásicos/farmacología , Ensayos de Selección de Medicamentos Antitumorales/instrumentación , Dispositivos Laboratorio en un Chip , Técnicas de Cultivo de Tejidos/instrumentación , Antineoplásicos/uso terapéutico , Resistencia a Antineoplásicos , Humanos , Glándula Tiroides/efectos de los fármacos , Glándula Tiroides/patología , Neoplasias de la Tiroides/tratamiento farmacológico , Neoplasias de la Tiroides/patología
11.
Prev Med ; 101: 8-14, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28526392

RESUMEN

The purpose of this study was to investigate susceptibility and ever use of tobacco products among adolescents and young adults in the US. Cross-sectional analysis of Wave 1(2013-2014) adolescent (12-17year-olds; n=13,651) and young adult (18-24year-olds; n=9112) data from the nationally-representative Population Assessment of Tobacco and Health (PATH) Study was conducted. At 12years, 5% were ever tobacco users and 36% were susceptible to use. Seventy percent were susceptible at age 17years, and the same proportion were ever users at age 22years. Susceptibility levels were comparable for cigarettes and e-cigarette (28.6% and 27.4%, respectively), followed by hookah (22.0%), pipes (17.5%), cigars (15.2%), and smokeless tobacco (9.7%). Non-Hispanic (NH) Black (Adjusted Odds Ratio [ORadj]=1.36; 95% Confidence Limit [CL], 1.18-1.56) and Hispanic (ORadj=1.34: 95% CL,1.19-1.49) adolescent never- users were more likely to be susceptible to future use of a tobacco product than NH Whites. Susceptibility was higher with age (15-17yrs. vs 12-14yrs.: ORadj=1.69; 95% CL, 1.55-1.85) and parental education (college graduates vs less than HS education: ORadj=1.22, 95% CL, 1.08-1.39). Compared to exclusive users of hookah, cigars, or smokeless products, larger proportions of exclusive e-cigarette ever users were also susceptible to cigarette use. Among adolescents, lower levels of ever use of tobacco products are often counterbalanced by higher levels of susceptibility for future use, which may suggest delayed initiation in some groups. Ever users of a given tobacco product were more susceptible to use other tobacco products, putting them at risk for future multiple tobacco product use.


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina/estadística & datos numéricos , Fumar/epidemiología , Productos de Tabaco/estadística & datos numéricos , Adolescente , Conducta del Adolescente , Niño , Estudios Transversales , Femenino , Encuestas Epidemiológicas , Humanos , Masculino , Fumar/etnología , Estados Unidos/epidemiología , Adulto Joven
12.
Tob Control ; 26(4): 371-378, 2017 07.
Artículo en Inglés | MEDLINE | ID: mdl-27507901

RESUMEN

BACKGROUND: This paper describes the methods and conceptual framework for Wave 1 of the Population Assessment of Tobacco and Health (PATH) Study data collection. The National Institutes of Health, through the National Institute on Drug Abuse, is partnering with the Food and Drug Administration's (FDA) Center for Tobacco Products to conduct the PATH Study under a contract with Westat. METHODS: The PATH Study is a nationally representative, longitudinal cohort study of 45 971 adults and youth in the USA, aged 12 years and older. Wave 1 was conducted from 12 September 2013 to 15 December 2014 using Audio Computer-Assisted Self-Interviewing to collect information on tobacco-use patterns, risk perceptions and attitudes towards current and newly emerging tobacco products, tobacco initiation, cessation, relapse behaviours and health outcomes. The PATH Study's design allows for the longitudinal assessment of patterns of use of a spectrum of tobacco products, including initiation, cessation, relapse and transitions between products, as well as factors associated with use patterns. Additionally, the PATH Study collects biospecimens from consenting adults aged 18 years and older and measures biomarkers of exposure and potential harm related to tobacco use. CONCLUSIONS: The cumulative, population-based data generated over time by the PATH Study will contribute to the evidence base to inform FDA's regulatory mission under the Family Smoking Prevention and Tobacco Control Act and efforts to reduce the Nation's burden of tobacco-related death and disease.


Asunto(s)
Salud Pública/estadística & datos numéricos , Fumar/epidemiología , Adolescente , Adulto , Anciano , Niño , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Proyectos de Investigación , Estados Unidos/epidemiología , Adulto Joven
13.
Clin Obstet Gynecol ; 59(2): 419-38, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26992182

RESUMEN

Breast density has emerged as a critical phenotypic marker of increased breast cancer risk. The breast density legislation, passed in multiple states, requires patient notification of the implications of the breast density on breast cancer risk and screening. Supplemental screening may be suggested in the state regulation; however, there are limited data to guide conversations with patients. This article will review the current state of supplemental screening in women with dense breasts and discuss theories of the mechanism of action. Guidance is provided to assist in shared decision making and appropriate patient counseling.


Asunto(s)
Densidad de la Mama , Neoplasias de la Mama/diagnóstico por imagen , Detección Precoz del Cáncer/métodos , Legislación como Asunto , Mamografía , Densidad de la Mama/fisiología , Femenino , Humanos , Imagen por Resonancia Magnética , Mamografía/métodos , Imagen Molecular , Cintigrafía , Factores de Riesgo , Tecnecio Tc 99m Sestamibi , Ultrasonografía
14.
Clin Obstet Gynecol ; 59(2): 439-46, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27101242

RESUMEN

Breast cancer is a leading source of malpractice claims for radiologists and gynecologists. Delay in or failure to diagnosis was the second most common cause for allegations of malpractice and failure to diagnosis breast cancer accounted for the majority of these claims. The amount paid in indemnity for such claims was only second to claims paid for neurologically impaired newborns. Issues involved in documentation and communication are reviewed with a focus on specific medical legal cases. Obstetrician gynecologists must remain cognizant of the potential for liability.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Ginecología/legislación & jurisprudencia , Responsabilidad Legal , Mala Praxis/legislación & jurisprudencia , Radiología/legislación & jurisprudencia , Gestión de Riesgos/métodos , Comunicación , Documentación , Detección Precoz del Cáncer , Femenino , Humanos , Gestión de Riesgos/legislación & jurisprudencia
15.
Clin Obstet Gynecol ; 59(2): 412-8, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26982251

RESUMEN

The purpose of this article is to review the fetal and long-term implications of diagnostic radiation exposure during pregnancy. Evidence-based recommendations for radiologic imaging modalities utilizing exposure of diagnostic radiation during pregnancy, including conventional screen-film mammography, digital mammography, tomosynthesis, and contrast-enhanced mammography are described.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Imagen por Resonancia Magnética , Mamografía/métodos , Complicaciones Neoplásicas del Embarazo/diagnóstico por imagen , Efectos Tardíos de la Exposición Prenatal/prevención & control , Ultrasonografía , Neoplasias de la Mama/terapia , Medicina Basada en la Evidencia , Femenino , Edad Gestacional , Humanos , Embarazo , Complicaciones Neoplásicas del Embarazo/terapia , Efectos Tardíos de la Exposición Prenatal/etiología , Dosis de Radiación
16.
Mol Microbiol ; 89(6): 1240-58, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23888987

RESUMEN

Viral and bacterial Holliday junction resolvases differ in specificity with the former typically being more promiscuous, acting on a variety of branched DNA substrates, while the latter exclusively targets Holliday junctions. We have determined the crystal structure of a RuvC resolvase from bacteriophage bIL67 to help identify features responsible for DNA branch discrimination. Comparisons between phage and bacterial RuvC structures revealed significant differences in the number and position of positively-charged residues in the outer sides of the junction binding cleft. Substitutions were generated in phage RuvC residues implicated in branch recognition and six were found to confer defects in Holliday junction and replication fork cleavage in vivo. Two mutants, R121A and R124A that flank the DNA binding site were purified and exhibited reduced in vitro binding to fork and linear duplex substrates relative to the wild-type, while retaining the ability to bind X junctions. Crucially, these two variants cleaved Holliday junctions with enhanced specificity and symmetry, a feature more akin to cellular RuvC resolvases. Thus, additional positive charges in the phage RuvC binding site apparently stabilize productive interactions with branched structures other than the canonical Holliday junction, a feature advantageous for viral DNA processing but deleterious for their cellular counterparts.


Asunto(s)
Bacteriófagos/enzimología , ADN Cruciforme/metabolismo , Resolvasas de Unión Holliday/genética , Resolvasas de Unión Holliday/metabolismo , Sustitución de Aminoácidos , Sitios de Unión , Cristalografía por Rayos X , Resolvasas de Unión Holliday/química , Mutagénesis Sitio-Dirigida , Proteínas Mutantes/genética , Proteínas Mutantes/aislamiento & purificación , Proteínas Mutantes/metabolismo , Unión Proteica , Conformación Proteica , Especificidad por Sustrato
17.
Ann Surg Oncol ; 21(10): 3342-7, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25047474

RESUMEN

BACKGROUND: The Georgia Breast Cancer Genomic Health Consortium is a partnership created with funding from the Centers for Disease Control and Prevention (CDC) to the Georgia Department of Public Health to reduce cancer disparities among high-risk minority women. The project addresses young women at increased risk for hereditary breast and ovarian cancer (HBOC) syndrome through outreach efforts. METHODS: The consortium provides education and collects surveillance data using the breast cancer genetics referral screening tool (B-RST) available at www.BreastCancerGeneScreen.org . The HBOC educational protocol was presented to 73 staff in 6 public health centers. Staff used the tool during the collection of medical history. Further family history assessments and testing for mutations in the BRCA1/2 genes were facilitated if appropriate. RESULTS: Data was collected from November 2012 through December 2013, including 2,159 screened women. The majority of patients identified as black/African American and were 18-49 years old. Also, 6.0 % (n = 130) had positive screens, and 60.9 % (n = 67) of the 110 patients who agreed to be contacted provided a detailed family history. A total of 47 patients (42.7 %) met National Comprehensive Cancer Network guidelines when family history was clarified. Fourteen (12.7 %) underwent genetic testing; 1 patient was positive for a BRCA2 mutation, and 1 patient was found to carry a variant of uncertain significance. CONCLUSIONS: The introduction of genomics practice within public health departments has provided access to comprehensive cancer care for uninsured individuals. The successful implementation of the B-RST into public health centers demonstrates the opportunity for integration of HBOC screening into primary care practices.


Asunto(s)
Proteína BRCA1/genética , Proteína BRCA2/genética , Detección Precoz del Cáncer , Predisposición Genética a la Enfermedad , Mutación/genética , Programas Nacionales de Salud/legislación & jurisprudencia , Neoplasias Ováricas/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/genética , Femenino , Estudios de Seguimiento , Implementación de Plan de Salud , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/genética , Pronóstico , Estados Unidos/epidemiología , Adulto Joven
18.
Phys Chem Chem Phys ; 16(13): 6068-74, 2014 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-24557156

RESUMEN

Energy- and angle-resolved photofragment distributions for ground-state Cl ((2)P3/2) and spin-orbit excited Cl* ((2)P1/2) have been recorded using the velocity map imaging technique after photodissociation of chloroform at wavelengths of 193 and ∼235 nm. Translational energy distributions are rather broad and peak between 0.6 and 1.0 eV. The spin-orbit branching ratios [Cl*]/[Cl] are 1 and 0.3 at 193 and 235 nm, respectively, indicating the involvement of two or more excited state surfaces. Considering the anisotropy parameters and branching ratios collectively, we conclude that the reaction at 193 nm takes place predominantly on the (1)Q1 surface, while the (3)Q1 surface gains importance at lower dissociation energies around 235 nm.


Asunto(s)
Cloroformo/química , Cinética , Fotólisis , Teoría Cuántica , Rayos Ultravioleta
19.
Drug Alcohol Depend ; 254: 111041, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-38043227

RESUMEN

INTRODUCTION: In the United States (US), pregnant females who use substances face increased morbidity and mortality risks compared to non-pregnant females. This study provides a national snapshot of substance use and treatment characteristics among US reproductive-aged females, including those who are pregnant. METHODS: Our sample included females aged 15-44 years (n=97,830) from the 2015-2019 National Survey on Drug Use and Health (NSDUH) data. We calculated weighted percentages of past-month alcohol or drug use and past-year substance use disorder (SUD), stratified by pregnancy status. We also calculated weighted percentages of past-year treatment setting and payer. Pearson chi-square tests were conducted to determine if percentages were statistically significantly different. RESULTS: Compared to non-pregnant females, pregnant females had lower prevalence of past-month illicit drug use excluding cannabis (1.6% vs. 4.3%, p<0.01), cannabis use (5.3% vs. 12.5%, p<0.01), binge drinking (4.5% vs. 29.3%, p<0.01) and past-year SUD (7.1 vs. 8.8%, p<0.01). Less than 13% of females with SUD received treatment regardless of pregnancy status, but treatment use was higher among pregnant females compared to non-pregnant females (12.8% vs. 10.5%). However, there were no statistically significant differences in past-year treatment use, setting, or treatment payer. DISCUSSION: The prevalence of substance use and SUD was lower among pregnant females compared to non-pregnant females in 2015-2019. Low uptake of substance use treatment suggests that barriers exist to treatment-seeking among reproductive-aged women. Further exploration of stigma, payment, and access to treatment, and how they differ by pregnancy status, is needed.


Asunto(s)
Cannabis , Trastornos Relacionados con Sustancias , Femenino , Embarazo , Humanos , Estados Unidos/epidemiología , Adulto , Trastornos Relacionados con Sustancias/epidemiología , Trastornos Relacionados con Sustancias/terapia , Encuestas Epidemiológicas , Prevalencia , Etanol
20.
Child Abuse Negl ; 154: 106883, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38870708

RESUMEN

BACKGROUND: The internet has become a place of increased risk of abuse, including sexual abuse, for young people (YP). One potential risk factor to online abuse and exploitation is the ability to mentalise. We developed the i-Minds app, a mentalisation-based digital health intervention (DHI) for YP who have experienced technology assisted sexual abuse (TASA), which we tested in a clinical feasibility trial. Nested within the trial was a qualitative implementation study with clinicians who referred to the trial. OBJECTIVE: To explore the barriers and enablers to the future integration of i-Minds into clinical practice. PARTICIPANTS AND SETTING: Twelve HCPs were recruited from across two trial recruitment sites (Manchester and Edinburgh). METHODS: Semi-structured interviews were informed by Normalisation Process Theory (NPT). Framework analysis was used; transcripts were coded deductively to NPT constructs. RESULTS: Practitioners were positive about the need for, and added value of, the i-Minds app over existing interventions, including other DHIs. While they felt confident with the app, concerns remained around the safety of using the app without practitioner support. i-Minds promoted changes in practitioners' work and impacted online behaviour of YP. There was an identified need for further training and organisational support. CONCLUSIONS: Practitioners are aware of TASA but have limited knowledge, skills and tools to work with TASA in clinical practice with YP. There is a need for awareness raising and education about TASA and DHI. i-Minds offers a theory-informed DHI for working with YP exposed to TASA that is acceptable to practitioners and YP.

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