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1.
Int J Mol Sci ; 24(3)2023 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-36768359

RESUMEN

Long noncoding RNAs (lncRNAs) are involved in transcriptional regulation, and their deregulation is associated with the development of various human cancers, including prostate cancer (PCa). However, their underlying mechanisms remain unclear. In this study, lncRNAs that interact with DNA and regulate mRNA transcription in PCa were screened and identified to promote PCa development. First, 4195 protein-coding genes (PCGs, mRNAs) were obtained from the The Cancer Genome Atlas (TCGA) database, in which 1148 lncRNAs were differentially expressed in PCa. Then, 44,270 pairs of co-expression relationships were calculated between 612 lncRNAs and 2742 mRNAs, of which 42,596 (96%) were positively correlated. Among the 612 lncRNAs, 392 had the potential to interact with the promoter region to form DNA:DNA:RNA triplexes, from which lncRNA AD000684.2(AC002128.1) was selected for further validation. AC002128.1 was highly expressed in PCa. Furthermore, AD000684.2 positively regulated the expression of the correlated genes. In addition, AD000684.2 formed RNA-DNA triplexes with the promoter region of the regulated genes. Functional assays also demonstrated that lncRNA AD000684.2 promotes cell proliferation and motility, as well as inhibits apoptosis, in PCa cell lines. The results suggest that AD000684.2 could positively regulate the transcription of target genes via triplex structures and serve as a candidate prognostic biomarker and target for new therapies in human PCa.


Asunto(s)
Neoplasias de la Próstata , ARN Largo no Codificante , Masculino , Humanos , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Neoplasias de la Próstata/genética , ARN Mensajero/genética , ADN , Regulación Neoplásica de la Expresión Génica , Redes Reguladoras de Genes
2.
J Am Chem Soc ; 144(41): 18834-18843, 2022 10 19.
Artículo en Inglés | MEDLINE | ID: mdl-36201849

RESUMEN

We report a stable, water-soluble, mononuclear manganese(IV) complex [MnIV(H2L)]·5H2O (Mn-HDCL) that acts as an efficient photothermal material. This system is based on a hexahydrazide clathrochelate ligand (L/HDCL) and is obtained via an efficient one-pot templated synthesis that avoids the need for harsh reaction conditions. Scanning tunneling microscopy images reveal that Mn-HDCL exists as a 2D sheet-like structure. In Mn-HDCL, the manganese(IV) ion is trapped within the cavity of the cage-like ligand. This effectively shields the Mn(IV) ion from the external environment while providing adequate water solubility. As a result of orbital transitions involving the coordinated manganese(IV) ion, as well as metal-to-ligand charge transfer effects, Mn-HDCL possesses a large extinction coefficient and displays a photothermal performance comparable to single-wall carbon nanotubes in the solid state. A high photothermal conversion efficiency (ca. 71%) was achieved in aqueous solution when subjected to near-infrared 730 nm laser photo-irradiation. Mn-HDCL is paramagnetic and provides a modest increase in the T1-weighted contrast of magnetic resonance images both in vitro and in vivo. Mn-HDCL was found to target tumors passively and allow tumor margins to be distinguished in vivo in a mouse model. In addition, it also exhibited an efficient laser-triggered photothermal therapy effect in vitro and in vivo. We thus propose that Mn-HDCL could have a role to play as a tumor-targeting photothermal sensitizer.


Asunto(s)
Manganeso , Nanotubos de Carbono , Ratones , Animales , Manganeso/química , Ligandos , Rayos Infrarrojos , Iones , Agua
3.
Angew Chem Int Ed Engl ; 61(28): e202204568, 2022 Jul 11.
Artículo en Inglés | MEDLINE | ID: mdl-35506510

RESUMEN

Photoresponsive arylsilanes have been fascinating molecules for decades because of their unique photophysical characteristics and surface chemistry. Here we report the synthesis and fabrication of a crystalline two-dimensional trisilyl metal-organic framework (TSiMOF) orderly installed with the classical photoresponsive hexamethyltrisilane groups on the surface. Irradiated by UV light under air in minutes the fluorescence of the TSiMOF is turned on simultaneously with an intriguing surface transformation from superhydrophobic to hydrophilic. Thus, multifarious luminescent and hydrophilic patterns including logos, characters and Quick Response codes, etc. with good resolution are readily generated on the facilely fabricated TSiMOF film. The mechanism of this transformation is revealed by control experiments that the superficial trimethylsilyl groups suffering photochemical oxidation have been converted to hydroxyl groups.

4.
J Am Chem Soc ; 143(21): 8129-8136, 2021 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-34011147

RESUMEN

Triplet carbenes (TCs) are of great interest due to their magnetic properties and reactivity, which descend from TCs' unique electronic state. However, the reactivity and stability of TCs are usually a trade-off, and it is difficult to achieve both at the same time. In this work, we were able to enhance the thermal stability of a TC species while maintaining its reactivity by confining them in the nanospace of a metal-organic framework (MOF). We synthesized a new MOF using a TC precursor; subsequently, TCs were generated by photostimulation. The TCs generated in the MOF nanospace were detectable up to 170 K, whereas their non-MOF-confined counterparts (bare ligand) could not be detected above 100 K. In addition, the reactivity of TC generated in MOF with O2 was drastically improved compared to that of bare ligand. Our approach is generally applicable to the stabilization of highly reactive species, whose reactivity needs to be preserved.

5.
Small ; 17(22): e2004351, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33135313

RESUMEN

Nanoporous materials can adsorb small molecules into their nanospaces. However, the trapping of light gas molecules dissolved in solvents suffers from low concentration and poor adsorption affinity. Here, the reversible trapping and releasing of dissolved oxygen are shown through integrating photosensitization and chemical capturing abilities into a metal-organic framework (MOF), MOMF-1. 9,10-Di(4-pyridyl)anthracene (dpa) ligands in MOMF-1 generates singlet oxygen from triplet oxygen under photoirradiation without additional photosensitizers, and successively reacts with it to produce anthracene endoperoxide, forming MOMF-2, which is proved crystallographically. The reverse reaction also proceeds quantitatively by heating MOMF-2. Moreover, MOMF-1 exhibits excellent water resistance, and completely removes oxygen of ppm order concentrations in water. The new material shown in this report allows controlling of the amount of dissolved oxygen, which can be applicable in various fields relating to numerous oxidation phenomena.

6.
Faraday Discuss ; 225: 70-83, 2021 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-33108427

RESUMEN

Molecular motions taking place in the nanospace of metal-organic frameworks (MOFs) are an interesting research subject, although not yet fully investigated. In this work, we utilized in situ Raman spectroscopy in the ultralow-frequency region to investigate the libration motion (including the rotational motion of phenylene rings) of MOFs, in particular [Cu2(bdc)2(dabco)] (Cu-JAST-1), where bdc = 1,4-benzenedicarboxylate and dabco = 1,4-diazabicyclo[2.2.2]octane. The libration mode of Cu-JAST-1 was found to be significantly suppressed by the adsorption of various guest molecules, such as CO2, Ar, and N2. In addition, an appreciable correlation between the libration mode and adsorption equilibrium time was identified, which provides useful novel tools in the design of MOFs acting as molecular adsorption and separation materials.

7.
BMC Med Inform Decis Mak ; 20(1): 212, 2020 09 07.
Artículo en Inglés | MEDLINE | ID: mdl-32894123

RESUMEN

BACKGROUND: The onset of silent diseases such as type 2 diabetes is often registered through self-report in large prospective cohorts. Self-reported outcomes are cost-effective; however, they are subject to error. Diagnosis of silent events may also occur through the use of imperfect laboratory-based diagnostic tests. In this paper, we describe an approach for variable selection in high dimensional datasets for settings in which the outcome is observed with error. METHODS: We adapt the spike and slab Bayesian Variable Selection approach in the context of error-prone, self-reported outcomes. The performance of the proposed approach is studied through simulation studies. An illustrative application is included using data from the Women's Health Initiative SNP Health Association Resource, which includes extensive genotypic (>900,000 SNPs) and phenotypic data on 9,873 African American and Hispanic American women. RESULTS: Simulation studies show improved sensitivity of our proposed method when compared to a naive approach that ignores error in the self-reported outcomes. Application of the proposed method resulted in discovery of several single nucleotide polymorphisms (SNPs) that are associated with risk of type 2 diabetes in a dataset of 9,873 African American and Hispanic participants in the Women's Health Initiative. There was little overlap among the top ranking SNPs associated with type 2 diabetes risk between the racial groups, adding support to previous observations in the literature of disease associated genetic loci that are often not generalizable across race/ethnicity populations. The adapted Bayesian variable selection algorithm is implemented in R. The source code for the simulations are available in the Supplement. CONCLUSIONS: Variable selection accuracy is reduced when the outcome is ascertained by error-prone self-reports. For this setting, our proposed algorithm has improved variable selection performance when compared to approaches that neglect to account for the error-prone nature of self-reports.


Asunto(s)
Diabetes Mellitus Tipo 2 , Medición de Resultados Informados por el Paciente , Teorema de Bayes , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiología , Diabetes Mellitus Tipo 2/genética , Femenino , Humanos , Polimorfismo de Nucleótido Simple , Estudios Prospectivos , Autoinforme
8.
Angew Chem Int Ed Engl ; 59(50): 22756-22762, 2020 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-32876973

RESUMEN

In comparison with the fast development of binary mixture separations, ternary mixture separations are significantly more difficult and have rarely been realized by a single material. Herein, a new strategy of tuning the gate-opening pressure of flexible MOFs is developed to tackle such a challenge. As demonstrated by a flexible framework NTU-65, the gate-opening pressure of ethylene (C2 H4 ), acetylene (C2 H2 ), and carbon dioxide (CO2 ) can be regulated by temperature. Therefore, efficient sieving separation of this ternary mixture was realized. Under optimized temperature, NTU-65 adsorbed a large amount of C2 H2 and CO2 through gate-opening and only negligible amount of C2 H4 . Breakthrough experiments demonstrated that this material can simultaneously capture C2 H2 and CO2 , yielding polymer-grade (>99.99 %) C2 H4 from single breakthrough separation.

9.
J Am Chem Soc ; 141(40): 15742-15746, 2019 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-31550888

RESUMEN

Reaction in well-designed solids allows yielding products with high selectivity and unique compounds that cannot be obtained in solution. However, the precise tuning of the arrangement of reactants in solids for the versatile application of solid-phase reactions remains a challenging subject. Here, a [2 + 2] photocyclization reaction at different positions of the carbon-carbon bonds is described in which the spatial arrangement of 4-styrylpyridines (4-spy) is changed by guest molecules in a flexible metal-organic framework. The 4-spy molecules undergo photodimerization between two carbon-carbon double bonds in the guest-free framework, whereas a reaction between olefinic and aromatic carbon-carbon bonds or the absence of reaction takes place in the solvent-incorporated form. This reactivity, which can be termed as "dynamic topochemistry" contributes to enforce the applicability of solid-phase reactions in synthetic chemistry.

10.
BMC Public Health ; 19(1): 686, 2019 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-31159776

RESUMEN

BACKGROUND: Traditional exercise [supervised exercise (SE)] intervention has been proved to be one of the most effective ways to improve metabolic health. However, most exercise interventions were on a high-cost and small scale, moreover lacking of the long-term effect due to low engagement. On the other hand, it was noteworthy that gamification and social incentives were promising strategies to increase engagement and sustain exercise interventions effects; as well as mobile technologies such as WeChat also can provide an appropriate platform to deploy interventions on a broader, low-cost scale. Thus, we aim to develop a novel exercise intervention ('S&G exercise intervention') that combines SE intervention with gamification and social incentives design through WeChat, with the aim of improving metabolic health and poor behaviors among overweight and obesity children. METHODS: We propose a randomized controlled trial of a 'S&G exercise intervention' among 420 overweight and obese children who have at least one marker of metabolic syndrome. Children will be randomized to control or intervention group in a 1:1 ratio. The exercise intervention package includes intervention designs based on integrated social incentives and gamification theory, involving targeted essential volume and intensity of activity (skipping rope) as well as monitoring daily information and providing health advice by WeChat. Participants will undertake assessments at baseline, at end of intervention period, in the follow-up time at months 3,6,12. The primary outcome is outcome of metabolic health. Secondary outcomes include behavioral (e.g., diary physical activity, diet) and anthropometric measures (e.g., body fat rate and muscle mass). DISCUSSIONS: This will be the first study to design an exercise intervention model that combines traditional supervised exercise (SE) intervention with gamification and social incentives theory through WeChat. We believed that this study could explore a low-cost, easy-to-popularize, and effective exercise intervention model for improving metabolic health and promote healthy among obese children. Furthermore, it will also provide important evidence for guidelines to prevent and improve metabolic health and health behaviors. TRIAL REGISTRATION: 10-04-2019;Registration number: ChiCTR1900022396 .


Asunto(s)
Conducta Infantil , Ejercicio Físico , Promoción de la Salud/métodos , Aplicaciones Móviles , Motivación , Obesidad Infantil/terapia , Medios de Comunicación Sociales , Terapia Conductista , Composición Corporal , Niño , Dieta , Terapia por Ejercicio , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Síndrome Metabólico/terapia , Sobrepeso , Obesidad Infantil/metabolismo , Proyectos de Investigación
11.
Prev Med ; 108: 53-59, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29277412

RESUMEN

This study aims to determine prospective effects of the childhood parent-child relationships on the development of cardiovascular risks in adolescence. Using available 917 parent-child dyads from the Study of Early Child Care and Youth Development (1991 to 2006), we analyzed the prospective effects of childhood parent-child relationships of Conflict and Closeness, as well as their categorized combinations (Harmonic, Dramatic, Hostile, and Indifferent) on the development of subscapular and triceps skinfold thickness (SST/TST), body mass index (BMI), systolic and diastolic blood pressure (SBP/DBP), and heart rate (HR) during adolescence. We found that higher levels of Conflict in the relationship with mothers (slope=0.05, P<0.001) and fathers (slope=0.04, P=0.03) increased the growth rate of TST among girls during adolescence, but not among boys. The maternal-girl dyadic with higher Conflict scores also increased girl's growth rate of BMI percentile (slope=0.10, P=0.02), though the paternal-boy dyadic with higher Conflict scores decreased boy's growth rate of BMI percentile (slope=-0.13, P=0.04). A Hostile maternal-son relationship lowered boy's growth rate of SBP (slope=-3.15, P<0.001) and DBP (slope=-4.42, P<0.001). A Dramatic maternal-son relationship increased boy's growth rate of SST (slope=0.89, P<0.001) and TST (slope=0.64, P=0.03). Hostile paternal-daughter relationships were positively associated with the growth rate of TST (slope=0.28, P=0.03). Overall, there was a significant influence of childhood parent-child relationships on the development of cardiovascular risks during adolescence, and the effect was further modified by both parents' and child's gender.


Asunto(s)
Presión Sanguínea/fisiología , Índice de Masa Corporal , Enfermedades Cardiovasculares/prevención & control , Conflicto Familiar/psicología , Frecuencia Cardíaca/fisiología , Relaciones Padres-Hijo , Adolescente , Niño , Femenino , Humanos , Masculino , Estudios Prospectivos , Factores de Riesgo , Factores Sexuales , Encuestas y Cuestionarios
12.
Eur J Nutr ; 57(3): 1073-1082, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28353070

RESUMEN

BACKGROUND: High added sugar consumption has been associated with the development of metabolic syndrome (MetS). The American Heart Association (AHA) diet is designed to prevent and treat MetS; however, it remains unclear whether the AHA diet is effective on decreasing added sugar consumption. The aim of our study was to evaluate the effect of the AHA dietary counselling on added sugar consumption among participants with MetS. METHODS: The AHA dietary counselling was conducted among 119 participants with MetS from June 2009 to January 2014 (ClinicalTrials.gov: NCT00911885). Unannounced 24-hour recalls were collected at baseline, 3, 6 and 12 months. Added sugar consumption patterns over time were examined using linear mixed models. RESULTS: After 1-year dietary counselling, intake of added sugars decreased by 23.8 g/day (95% CI 15.1, 32.4 g/day); intake of nonalcoholic beverages dropped from the leading contributor of added sugar intake to number 7 (from 11.9 to 4.4%); the Alternative Healthy Eating Index (AHEI) score increased by 5.4 (95% CI 2.9, 8.0); however, added sugar intake for 48% participants still exceeded the recommendation. Added sugar intake per meal among different meal type was similar (24.2-25.8%) at baseline. After the 1-year dietary counselling, breakfast became the major resource of added sugar intake (33.3%); the proportion of added sugar intake from snacks decreased from 25.8% (CI 23.1, 28.5%) to 20.9% (CI 19.6, 22.3%). CONCLUSION: Although the consumption of added sugars in participants with MetS decreased after the 1-year AHA dietary counselling, added sugar intake from majority of participants still exceeds recommended limits. Actions of successful public health strategies that focus on reducing added sugar intake are needed.


Asunto(s)
Dieta Baja en Carbohidratos , Dieta Saludable , Azúcares de la Dieta/administración & dosificación , Síndrome Metabólico/dietoterapia , Obesidad/dietoterapia , Cooperación del Paciente , Educación del Paciente como Asunto , American Heart Association , Índice de Masa Corporal , Azúcares de la Dieta/efectos adversos , Femenino , Estudios de Seguimiento , Procesos de Grupo , Hospitales Universitarios , Humanos , Masculino , Massachusetts , Persona de Mediana Edad , Educación del Paciente como Asunto/normas , Guías de Práctica Clínica como Asunto , Medicina de Precisión , Autoinforme , Caracteres Sexuales , Estados Unidos
13.
J Phys Chem A ; 122(47): 9171-9176, 2018 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-30394092

RESUMEN

High-lying quantum states of molecule are apt to be populated by translational-to-internal energy transfer in the collisions with atom, which usually becomes more significant with the increase of collision energy. However, in the charge exchange reaction Ar+ + NO → Ar + NO+, the products NO+ prefer a dominant population at the lowest triplet state a3Σ+, in particular, in the higher energy collisions; the higher states b3Π and w3Δ of NO+ are accessed only at the lower collision energies. Such a striking collision-energy dependence is attributed to two distinctly different processes: the former is controlled with an energetically resonant charge-transfer mechanism; while the latter experiences an intermediate complex (Ar-NO)+ which permits a more efficient translational-to-internal energy transfer.

14.
Am J Epidemiol ; 186(5): 514-523, 2017 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-28486621

RESUMEN

We examined the associations between changes in dietary inflammatory potential and risk of colorectal cancer (CRC) in 87,042 postmenopausal women recruited from 1993-1998 by the Women's Health Initiative, conducted in the United States. Food frequency questionnaire data were used to compute patterns of change in dietary inflammatory index (DII) scores and cumulative average DII scores over 3 years. Cox regression models were used to estimate hazard ratios for CRC risk. After a median of 16.2 years of follow-up, 1,038 CRC cases were diagnosed. DII changes were not substantially associated with overall CRC, but proximal colon cancer risk was higher in the proinflammatory-change DII group than in the antiinflammatory-stable DII group (hazard ratio = 1.32, 95% confidence interval: 1.01, 1.74). Among nonusers of nonsteroidal antiinflammatory drugs (NSAIDs) (Pinteraction = 0.055), the proinflammatory-stable DII group was at increased risk of overall CRC and proximal colon cancer. Also among nonusers of NSAIDs, risks of overall CRC, colon cancer, and proximal colon cancer were higher in the highest quintile compared with the lowest cumulative average DII quintile (65%, 61%, and 91% higher risk, respectively). Dietary changes toward, or a history of, proinflammatory diets are associated with an elevated risk of colon cancer, particularly for proximal colon cancer and among nonusers of NSAIDs.


Asunto(s)
Neoplasias Colorrectales/etiología , Dieta/efectos adversos , Inflamación/complicaciones , Anciano , Antiinflamatorios no Esteroideos/uso terapéutico , Índice de Masa Corporal , Neoplasias Colorrectales/epidemiología , Registros de Dieta , Ejercicio Físico , Conducta Alimentaria , Femenino , Humanos , Inflamación/tratamiento farmacológico , Inflamación/etiología , Estudios Longitudinales , Persona de Mediana Edad , Posmenopausia , Modelos de Riesgos Proporcionales , Factores de Riesgo , Estados Unidos/epidemiología , Salud de la Mujer
15.
Cell Immunol ; 311: 80-85, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27823764

RESUMEN

Chemokine (C-X-C motif) receptor 6 (CXCR6) is up-regulated in many malignancies, indicating that CXCR6 plays an important role in tumor progression. However, the expression and function of CXCR6 in osteosarcoma (OS) remains unclear. This study aimed to explore the expression levels and function of CXCR6 in OS tissues and osteosarcoma cell lines MG-63, HOS and U2OS. The protein expression levels of CXCR6 in OS patient tissues and three osteosarcoma cell lines MG-63, HOS and U2OS were assessed. CXCR6-overexpression MG-63 cell lines were established and then the proliferation, invasion and the epithelial-mesenchymal transition (EMT) in those cells were assessed. CXCR6 mRNA levels in OS tissues were significantly higher than those in normal bone tissues. Consistently, both of the mRNA and protein levels of CXCR6 in OS cell lines MG-63, HOS and U2OS were higher than those in normal bone cells hFOB1.19. CXCR6 overexpression not only promoted cell proliferation, invasion and EMT, but also enhanced the phosphorylation of Akt in MG-63 cells. After inhibition of Akt-phosphorylation by Akt inhibitor, LY2940023, CXCR6-induced cell proliferation and invasion were dramatically attenuated. In conclusion, the present study demonstrated that CXCR6 enhances OS cell proliferation and invasion through the Akt pathway.


Asunto(s)
Osteoblastos/fisiología , Osteosarcoma/inmunología , Receptores de Quimiocina/metabolismo , Receptores Virales/metabolismo , Carcinogénesis , Línea Celular Tumoral , Movimiento Celular , Proliferación Celular , Transición Epitelial-Mesenquimal , Regulación de la Expresión Génica , Humanos , Proteína Oncogénica v-akt/metabolismo , Fosforilación/efectos de los fármacos , Receptores CXCR6 , Receptores de Quimiocina/genética , Receptores Virales/genética , Transducción de Señal , Factor de Crecimiento Transformador beta/metabolismo
16.
Eur J Nutr ; 56(2): 683-692, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26644215

RESUMEN

BACKGROUND: Various dietary components have been studied in relation to overall mortality; however, little is known about the relationship between the inflammatory potential of overall diet and mortality. MATERIALS AND METHODS: We examined the association between the dietary inflammatory index (DII) and mortality in the National Health and Nutrition Examination Survey III follow-up study. The DII was computed from baseline dietary intake assessed using 24-h dietary recalls (1988-1994). Mortality was determined from the National Death Index records through 2006. Cox proportional hazards regression was used to estimate hazard ratios (HRs) and 95 % confidence interval (95 % CI). During the follow-up, 2795 deaths were identified, including 1233 due to cardiovascular disease (CVD), and 615 due to cancer, 158 of which were due to digestive-tract cancers. RESULTS: Multivariate Cox proportional hazards regression analyses, adjusting for age, race, diabetes status, hypertension, physical activity, body mass index, poverty index, and smoking, revealed positive associations between higher DII scores and mortality. Comparing subjects in DII tertile 3 versus tertile 1, significant associations were noted for all-cause mortality (HRTertile3vs1 1.34; 95 % CI 1.19-1.51, P trend < 0.0001), CVD mortality (HRTertile3vs1 1.46; 95 % CI 1.18-1.81, P trend = 0.0006), cancer mortality (HRTertile3vs1 1.46; 95 % CI 1.10-1.96, P trend = 0.01), and digestive-tract cancer mortality (HRTertile3vs1 2.10; 95 % CI 1.15-3.84, P trend = 0.03). CONCLUSION: These results indicate that a pro-inflammatory diet, as indicated by higher DII scores, was associated with higher risk of all-cause, CVD, and cancer mortality.


Asunto(s)
Proteína C-Reactiva/análisis , Enfermedades Cardiovasculares/etiología , Dieta/efectos adversos , Neoplasias/etiología , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores/sangre , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/inmunología , Enfermedades Cardiovasculares/mortalidad , Estudios de Cohortes , Neoplasias del Sistema Digestivo/sangre , Neoplasias del Sistema Digestivo/etiología , Neoplasias del Sistema Digestivo/inmunología , Neoplasias del Sistema Digestivo/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Mortalidad , National Center for Health Statistics, U.S. , Neoplasias/sangre , Neoplasias/inmunología , Neoplasias/mortalidad , Encuestas Nutricionales , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Riesgo , Estados Unidos/epidemiología , Adulto Joven
17.
Br J Cancer ; 114(11): 1277-85, 2016 05 24.
Artículo en Inglés | MEDLINE | ID: mdl-27100730

RESUMEN

BACKGROUND: Diet modulates inflammation and inflammatory markers have been associated with cancer outcomes. In the Women's Health Initiative, we investigated associations between a dietary inflammatory index (DII) and invasive breast cancer incidence and death. METHODS: The DII was calculated from a baseline food frequency questionnaire in 122 788 postmenopausal women, enrolled from 1993 to 1998 with no prior cancer, and followed until 29 August 2014. With median follow-up of 16.02 years, there were 7495 breast cancer cases and 667 breast cancer deaths. We used Cox regression to estimate multivariable-adjusted hazards ratios (HRs) and 95% confidence intervals (95% CIs) by DII quintiles (Q) for incidence of overall breast cancer, breast cancer subtypes, and deaths from breast cancer. The lowest quintile (representing the most anti-inflammatory diet) was the reference. RESULTS: The DII was not associated with incidence of overall breast cancer (HRQ5vsQ1, 0.99; 95% CI, 0.91-1.07; Ptrend=0.83 for overall breast cancer). In a full cohort analysis, a higher risk of death from breast cancer was associated with consumption of more pro-inflammatory diets at baseline, after controlling for multiple potential confounders (HRQ5vsQ1, 1.33; 95% CI, 1.01-1.76; Ptrend=0.03). CONCLUSIONS: Future studies are needed to examine the inflammatory potential of post-diagnosis diet given the suggestion from the current study that dietary inflammatory potential before diagnosis is related to breast cancer death.


Asunto(s)
Neoplasias de la Mama/epidemiología , Dieta/efectos adversos , Inflamación/epidemiología , Anciano , Biomarcadores , Neoplasias de la Mama/etiología , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/patología , Neoplasias de la Mama/prevención & control , Proteína C-Reactiva/análisis , Conducta Alimentaria , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Inflamación/sangre , Inflamación/complicaciones , Inflamación/etiología , Interleucinas/sangre , Persona de Mediana Edad , Posmenopausia , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Factores de Riesgo , Factores Socioeconómicos , Encuestas y Cuestionarios , Factor de Necrosis Tumoral alfa/análisis , Estados Unidos/epidemiología
18.
Breast Cancer Res Treat ; 159(1): 139-49, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27475089

RESUMEN

We utilized the dietary inflammatory index (DII) to investigate associations between patterns of change in, and history of the inflammatory potential of diet and risk of breast cancer in the Women's Health Initiative (WHI). We included 70,998 postmenopausal women aged 50-79 years recruited from 1993 to 1998 into the WHI Observational Study and Dietary Modification trial control group and followed through August 29, 2014. We utilized data from food frequency questionnaires administered at baseline and Year 3, to calculate average DII scores, patterns of change in DII, and used these measures in multivariable-adjusted Cox regression models to estimate hazards ratios (HR) and 95 % confidence intervals (CI) for incident invasive breast cancer and its subtypes. After 1,093,947 person-years of follow-up, 3471 cases of invasive breast cancer were identified. There was no substantial association between average DII scores or patterns of change in DII and risk of overall invasive breast cancer (HR, 1.03; 95 % CI, 0.90, 1.17; P-trend = 0.79; comparing extreme average DII quintiles). However, there was a significant nonlinear association between average DII scores and the ER-, PR-, HER2+, subtype (HR, 2.37; 95 % CI, 1.08, 5.20; P-trend = 0.18; comparing extreme quintiles). For patterns of change in DII, the age-adjusted association with ER-, PR-, HER2+ subtype comparing women in the proinflammatory stable to those in the anti-inflammatory stable categories (HR, 1.82; 95 % CI, 1.06, 3.13) persisted in the multivariable-adjusted model but was less precise (HR, 1.85; 95 % CI, 0.96, 3.55; P = 0.06). Dietary inflammatory potential may differentially influence the development of specific breast cancer phenotypes.


Asunto(s)
Neoplasias de la Mama/epidemiología , Conducta Alimentaria , Inflamación/complicaciones , Anciano , Neoplasias de la Mama/etiología , Femenino , Humanos , Inflamación/etiología , Persona de Mediana Edad , Posmenopausia , Autoinforme
19.
Org Biomol Chem ; 14(5): 1784-93, 2016 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-26750757

RESUMEN

A simple and efficient procedure for the synthesis of amides directly from aldehydes and amines catalyzed by heteropolyanion-based ionic liquids under solvent-free conditions has been reported. The practical protocol was found to tolerate a wide range of substrates with different functional groups. Moderate to excellent yields, solvent-free media, and operational simplicity are the main highlights. The proposed dual-catalysis mechanistic pathway was briefly investigated. Furthermore, the heteropolyanion-based ionic liquids were easily reusable for this oxidative amidation.

20.
Eur J Epidemiol ; 31(8): 747-61, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27188186

RESUMEN

To compare impact of incident diabetes on atherosclerotic cardiovascular disease (ASCVD) risk among postmenopausal women according to statin use. Prospective data from 120,499 postmenopausal women without prevalent diabetes or cardiovascular disease at baseline from the Women's Health Initiative were used. Incident diabetes was self-reported annually and defined as treatment with pills or injectable medication for diabetes. Current statin use was determined at enrollment and years 1, 3, 6, 9 and 13.5 in the three clinical trial arms, and at baseline, year 3, and 13.5 for the observational study. The primary outcome was incident ASCVD events, self-reported annually and adjudicated by blinded local and central physicians. Incident diabetes and statin use status were fitted as time-varying covariates in Cox regression models to assess ASCVD risk during an average follow-up of 13.6 years. For those not on statins at the time of diabetes diagnosis, there was a 42 % increased risk of ASCVD [hazard ratio (HR) 1.42, 95 % CI 1.28-1.58] among women with incident diabetes versus those without diabetes. Among women on statins, there was a 39 % increased risk of ASCVD (HR 1.39, 95 % CI 1.12-1.74) in women with incident diabetes versus those without diabetes. The increased ASCVD risk due to diabetes was similar between women before or after initiating statins (P = 0.89). Whether diabetes was diagnosed before or after statin use did not alter the increased risk of ASCVD associated with diabetes. Mitigating the increased incidence of diabetes in statin users could increase the ASCVD benefit-to-risk ratio of statins.


Asunto(s)
Enfermedad de la Arteria Coronaria/epidemiología , Diabetes Mellitus/epidemiología , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Posmenopausia , Comorbilidad , Femenino , Humanos , Incidencia , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Medición de Riesgo , Factores de Riesgo , Estados Unidos/epidemiología
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