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INTRODUCTION: Genetic tests, including germline and tumor (somatic) testing, can optimize the clinical care and outcomes for cancer patients and their family members. However, evidence on cancer patients' use of genetic testing and discussions about it with healthcare providers is limited. METHODS: Study participants included cancer survivors aged 18 or older, drawn from the 2021 Health Information and National Trends Survey (HINTS)-Surveillance, Epidemiology, and End Results (SEER) linked database, which comprises three US cancer registries: Iowa, New Mexico, and the Greater Bay Area. Sociodemographic factors (e.g., age, sex, income, education) at the time of the survey and clinical characteristics (e.g., cancer site, stage) at the time of diagnosis were compared based on self-reported genetic testing status and provider discussions, using survey design-adjusted analysis. RESULTS: The weighted study sample comprised 415,978 cancer survivors with a mean age of 70.5 years at the time of the survey. Overall, 17.0% reported having germline testing, 8.5% having tumor testing, and 8.6% discussing tumor testing with their healthcare providers. Higher proportions of germline genetic testing were observed among survivors under age 65 at the time of the survey, females, holding college degrees, and with private insurance coverage compared to their respective counterparts - males, aged 65 or above when surveyed, with lower educational attainment, and with public insurance or uninsured. The proportion of those who reported tumor testing was greater for those diagnosed in recent years (2015-2017 vs. before 2002). Regarding clinical characteristics, survivors with ovarian and breast cancers had a 7.0-36.4% higher prevalence of both testing compared to those with other cancer types lacking germline indication. More cancer survivors diagnosed at distant stages (vs. regional) or between 2015 and 2017 (vs. 2003-2010) reported having provider discussions about tumor testing. CONCLUSION: Findings showed that the highest reports of germline testing were among young female cancer survivors and those with higher education and private insurance. Survivors diagnosed in recent years or with advanced-stage disease were more likely to report discussing tumor testing with providers. Further research is warranted to better understand the barriers and educational needs of cancer patients, caregivers, and providers to optimize genetic testing strategies.
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Supervivientes de Cáncer , Pruebas Genéticas , Neoplasias , Sistema de Registros , Humanos , Femenino , Pruebas Genéticas/estadística & datos numéricos , Pruebas Genéticas/métodos , Masculino , Supervivientes de Cáncer/estadística & datos numéricos , Anciano , Persona de Mediana Edad , Neoplasias/genética , Neoplasias/diagnóstico , Adulto , Factores Sociodemográficos , Adolescente , Adulto Joven , Programa de VERF , Anciano de 80 o más AñosRESUMEN
Background. Despite the potential of palliative care (PC) to enhance the quality of life for patients with advanced dementia, there is limited knowledge of its inpatient utilization patterns. This study investigated inpatient PC consultation utilization patterns and evaluated its impact on hospital length of stay (LOS) and medical costs among older patients diagnosed with Alzheimer's Disease and Related Dementia who were at a high risk of mortality (ADRD-HRM). Methods. Using the 2016-2019 National Inpatient Sample database, we conducted multivariable logistic regression analyses to identify individual and hospital characteristics influencing PC consultation utilization. We subsequently performed generalized linear models to estimate LOS (using Poisson distribution) and hospital charges (via log-transformation). Results. Our sample encompassed 965,644 hospital discharges (weighted n = 4,828,219) of patients aged 65 years and above with ADRD-HRM. Among them, 14.6% received inpatient PC. There was a notable uptrend in PC consultation utilization from 13.3% in 2016 to 16.3% in 2019 (p trend<.001). Factors positively influencing and associated with PC utilization included patients that are older, non-Hispanic White, with higher income, receiving care from teaching hospitals, and facilitated with greater bed capacity (all P < .05). Although patients who received PC were more likely to have 3.0% longer LOS (P < .001), they had 19.2% lower hospital charges (P < .001). Conclusions. PC substantially reduced hospital expenditures for older patients with ADRD-HRM, but the prevalence remained low at 14.6% in the study period. Future studies should explore the unmet needs of patients with lower sociodemographic status and those in rural hospitals to further increase their PC consultation utilization.
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INTRODUCTION: We evaluated whether Medicaid expansion (ME) was associated with improved 2-year survival and time to treatment initiation (TTI) among patients with gastrointestinal (GI) cancer. METHODS: GI cancer patients diagnosed 40-64 years were queried from the National Cancer Database. Those diagnosed from 2010 to 2012 were considered pre-expansion; those diagnosed from 2014 to 2016 were considered post-expansion. Cox models estimated hazard ratios and 95% confidence intervals (CIs) for 2-year overall survival. Generalized estimating equations (GEE) estimated odds ratios (OR) and 95% CI of TTI within 30- and 90 days. Multivariable Difference-in-Difference models were used to compare expansion/nonexpansion cohorts pre-/post-expansion, adjusting for patient, clinical, and hospital factors. RESULTS: 377,063 patients were included. No significant difference in 2-year survival was demonstrated across ME and non-ME states overall or in site-based subgroup analysis. In stage-based subgroup analysis, 2-year survival significantly improved among stage II cancer, with an 8% decreased hazard of death at 2 years (0.92; 0.87-0.97). Those with stage IV had a 4% increased hazard of death at 2 years (1.04; 1.01-1.07). Multivariable GEE models showed increased TTI within 30 days (1.12; 1.09-1.16) and 90 days (1.22; 1.17-1.27). Site-based subgroup analyses indicated increased likelihood of TTI within 30 and 90 days among colon, liver, pancreas, rectum, and stomach cancers, by 30 days for small intestinal cancer, and by 90 days for esophageal cancer. In subgroup analyses, all stages experienced improved odds of TTI within 30 and 90 days. CONCLUSION: ME was not associated with significant improvement in 2-year survival for those with GI cancer. Although TTI increased after ME for both cohorts, the 30- and 90-day odds of TTI was higher for those from ME compared with non-ME states. Our findings add to growing evidence of associations with ME for those diagnosed with GI cancer.
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Neoplasias Esofágicas , Neoplasias Gastrointestinales , Estados Unidos/epidemiología , Humanos , Medicaid , Tiempo de Tratamiento , Neoplasias Gastrointestinales/terapia , Modelos de Riesgos ProporcionalesRESUMEN
BACKGROUND: Understanding the disparities in utilization and weight loss outcomes of metabolic and bariatric surgery (MBS) by demographics will inform strategies targeting potential treatment gaps and enhance overall clinical obesity treatment. OBJECTIVE: To identify factors associated with utilization and longitudinal weight loss after MBS. SETTING: OneFlorida Clinical Research Consortium Database. METHODS: We performed a retrospective study using data from the OneFlorida Clinical Research Consortium between 2012 and 2018. We used logistic regression with intersectional effects to identify factors associated with utilization of MBS. Mixed-effect models were used to estimate longitudinal percentage total weight loss among those who underwent MBS with up to 18 months of follow-up. RESULTS: Among 429,821 patients eligible for MBS, 8290 (1.9%) underwent MBS between 2012 and 2018. Intersectional analysis revealed that non-Hispanic Black patients experienced an inferior utilization of MBS compared with non-Hispanic White and Hispanic counterparts, defined by the interaction between race/ethnicity and demographic factors, including male sex, older age, and insurance coverage. In the longitudinal weight loss assessment, 4016 patients (48.3% Roux-en-Y gastric bypass, 51.7% sleeve gastrectomy) were included. We found that non-Hispanic Black patients experienced significantly less weight loss than non-Hispanic White and Hispanic counterparts. Other factors associated with less weight loss over time included undergoing sleeve gastectomy, male sex, lower preoperative body mass index, and having type 2 diabetes at the time of surgery. CONCLUSIONS: Our findings will help to design new strategies focusing on the intersection of race/ethnicity and sociodemographic factors to improve access and effectiveness of MBS.
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Cirugía Bariátrica , Diabetes Mellitus Tipo 2 , Derivación Gástrica , Obesidad Mórbida , Humanos , Masculino , Etnicidad , Obesidad Mórbida/complicaciones , Estudios Retrospectivos , Diabetes Mellitus Tipo 2/cirugía , Pérdida de Peso , Gastrectomía , Resultado del TratamientoRESUMEN
Anti-PD-1 therapy has shown promising outcomes in the treatment of different types of cancer. It is of fundamental interest to analyze the efficacy of anti-PD-1 therapy in cancer patients infected with hepatitis B virus (HBV) since the comorbidity of HBV and cancer is widely documented. We designed a multicenter retrospective study to evaluate the efficacy of anti-PD-1 therapy on non-liver cancer patients infected with HBV. We found anti-PD-1 therapy achieved much better outcomes in HBV+ non-liver cancer patients than their HBV- counterparts. We performed single-cell RNA sequencing (scRNA-seq) on peripheral blood mononuclear cells (PBMCs) from esophageal squamous cell carcinoma (ESCC) patients. We found both cytotoxicity score of T cells and MHC score of B cells significantly increased after anti-PD-1 therapy in HBV+ ESCC patients. We also identified CX3CR1high TEFF, a subset of CD8+ TEFF, associated with better clinical outcome in HBV+ ESCC patients. Lastly, we found CD8+ TEFF from HBV+ ESCC patients showing higher fraction of Exhaustionhi T than their HBV- counterpart. In summary, anti-PD-1 therapy on HBV+ non-liver cancer patients is safe and achieves better outcomes than that on HBV- non-liver cancer patients, potentially because HBV+ patients had higher fraction of Exhaustionhi T, which made them more efficiently respond to anti-PD-1 therapy.
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OBJECTIVES: Palliative care can improve the quality of life of adolescents and young adults (AYA) with cancer. However, little is known about the utilization of palliative care among AYA cancer patients. Identifying factors associated with the utilization of palliative care could inform efforts to improve palliative care access among AYA patients living with cancer. METHODS: Using data from the National Inpatient Sample 2016-2019, a representative sample of US hospitalizations, we examined palliative care encounters and associated characteristics among hospitalizations of AYA with cancer and high inpatient mortality risk. Survey design-adjusted bivariate and multivariable logistic regression models were used to examine associations of patient- and hospital-level characteristics with palliative care. RESULTS: Of 10,979 hospitalizations by AYA cancer patients with high mortality risk, 19.9% received palliative care services between 2016 and 2019. After adjusting for all characteristics, independent predictors of palliative care use were as follows: older age (25-39 years old vs. 25-39 years; odds ratio [OR] 1.31, 95% confidence interval [CI] 1.15-1.49), Hispanic/Latinx (vs. non-Hispanic White; OR 1.16, 95% CI 1.01-1.34), female (vs. male; OR 1.27, 95% CI 1.14-1.41), public insurance (vs. private insurance; OR 1.23, 95% CI 1.10-1.38), hospital location in the US South (vs. Northeast; OR 0.78, 95% CI 0.66-0.94), and a large hospital (vs. small; OR 0.83, 95% CI 0.72-0.96). SIGNIFICANCE OF RESULTS: Less than 20% of AYAs with cancer and high risk of mortality received inpatient palliative care services. Further research is needed to explore the reasons for lower palliative care utilization in the younger age groups.
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BACKGROUND: Literature shows that limited English proficiency (LEP) influences individual healthcare-seeking behaviors. The Asian population is the fastest-growing racial/ethnic group in the US, and approximately 50% of foreign-born Asians are estimated to live with LEP. OBJECTIVE: To examine associations of LEP and patient-provider language concordance (PPLC) with evidence-based cancer screening utilization for cervical, breast, and colorectal cancers among Asian American adults. METHODS: We obtained LEP, PPLC, and up-to-date status on the three types of cancer screening from a nationally representative sample of Asian Americans aged ≥ 18 years in the 2010-2016 and 2018 Medical Expenditure Panel Surveys. We used multivariable logistic regression models with recommended survey weighting to examine associations of LEP and PPLC with the cancer screening uptake based on USPSTF guidelines. RESULTS: The study population comprised 8953 respondents, representing 8.17 million Asian American adults. Overall, 11.9% of respondents experienced LEP; of those with LEP, 20% were with PPLC. In multivariable models, compared to respondents without LEP, respondents with LEP and without PPLC were significantly less likely to report up-to-date status on breast (OR = 0.44; 95% CI: 0.26-0.76), cervical (OR = 0.44; 95% CI: 0.26-0.75), or colorectal cancer screening (OR = 0.46; 95% CI: 0.26-0.80). However, these differences were not detected in respondents with LEP and with PPLC. CONCLUSION: LEP is associated with lower up-to-date status on cancer screening among Asian Americans, while PPLC seems to moderate this association. These findings suggest the enhancement for language-appropriate and culturally competent healthcare for Asian Americans with LEP, which helps accommodate their communication needs and promotes cancer screening.
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Neoplasias de la Mama , Neoplasias Colorrectales , Barreras de Comunicación , Dominio Limitado del Inglés , Neoplasias del Cuello Uterino , Adulto , Humanos , Asiático , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/etnología , Detección Precoz del Cáncer , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/etnología , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/etnología , Femenino , Aceptación de la Atención de Salud/etnologíaRESUMEN
Less is known whether bariatric surgery (BS) is associated with improved outcomes of COVID-19 complications among patients with class III obesity. Using data from the Florida's state inpatient database (SID) in 2020, we performed multivariable logistic regressions to investigate the impact of prior BS on three separate events, including admission due to COVID-19 among patients eligible for BS (non-BS) and those with prior BS, ventilator usage, and all-cause mortality among those admitted due to COVID-19. Of 409,665 patients included in this study, 25,116 (6.1%) had a history of BS. Results from adjusted logistic regression showed that prior BS was associated with decreased risk of admission due to COVID-19 than that in non-BS group. The risk reduction was smaller among those with class III obesity (adjusted odds ratio [aOR]: 0.58; 95% CI: 0.51-0.66; p < 0.001) than those without (aOR: 0.32; 95% CI: 0.28-0.38; p < 0.001). Compared with the non-BS group, aOR of ventilator use and all-cause mortality for patients without class III obesity decreased by 58% and 78% (p < 0.05), respectively. However, these significances disappeared among patients with continued class III obesity after BS. Our findings suggest that patients with continued class III obesity after BS were still at higher risk of severe COVID-19 outcomes than those without.
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Cirugía Bariátrica , COVID-19 , Obesidad Mórbida , Humanos , Obesidad Mórbida/cirugía , Florida/epidemiología , COVID-19/epidemiología , Cirugía Bariátrica/métodos , Obesidad/complicaciones , Obesidad/epidemiología , Obesidad/cirugía , Estudios RetrospectivosAsunto(s)
Psoriasis , Estilbenos , Niño , Emolientes , Femenino , Humanos , Psoriasis/diagnóstico , Psoriasis/tratamiento farmacológico , ResorcinolesRESUMEN
Accumulating evidence has presented that microRNA-148a/152 (miR-148a/152) acts as the tumor inhibitor in various cancers. In this article, we aimed to probe the inhibition of colon cancer stem cells by miR-148a/152 cluster via regulation of CCT6A. miR-148a/152 and CCT6A expression in colon cancer tissues and cells was detected. The relationship between miR-148a/152 expression and the clinicopathological features of patients with colon cancer was analyzed. Colon cancer stem cells (CD44+/CD133+) were selected and high/low expression of miR-148a/152 plasmids were synthesized to intervene CD44+/CD133+ colon cancer stem cells to investigate the function of miR-148a/152 in invasion, migration, proliferation, colony formation and apoptosis of cells. The growth status of nude mice was observed to verify the in-vitro results. The relationship between miR-148a/152 and CCT6A was analyzed. CCT6A upregulated and miR-148a/152 downregulated in colon cancer tissues. MiR-148a/152 expression was correlated with tumor node metastasis stage, lymph node metastasis and differentiation degree. Upregulated miR-148a/152 depressed CCT6A expression and restrained invasion and migration ability, colony formation and proliferation, induced cell apoptosis, depressed OCT4, Nanog and SOX2 mRNA expression of colon cancer stem cells, and descended tumor weight and volume in nude mice. CCT6A was a target gene of miR-148a/152. Overexpression of CCT6A protected colon cancer stem cells. Functional studies showed that upregulation of miR-148a/152 can suppress the migration, invasion and proliferation of CD44+/CD133+ colon cancer stem cells, advance its apoptosis via inhibition of CCT6A expression.
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Chaperonina con TCP-1/efectos de los fármacos , Neoplasias del Colon/patología , MicroARNs/farmacología , Células Madre Neoplásicas/efectos de los fármacos , Células Madre Neoplásicas/patología , Anciano , Animales , Apoptosis/efectos de los fármacos , Línea Celular Tumoral , Movimiento Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Regulación hacia Abajo , Femenino , Humanos , Masculino , Ratones , Ratones Endogámicos BALB C , Ratones Desnudos , Persona de Mediana Edad , Carga Tumoral , Regulación hacia Arriba , Ensayos Antitumor por Modelo de XenoinjertoRESUMEN
Hyperbilirubinemia caused severe hepatobiliary diseases with various causes, especially hepatic fibrosis and cirrhosis caused by end-stage hepatitis B and C. Plasma adsorption perfusion (PP) has a tremendous advantage in treating patients with hyperbilirubinemia and liver failure, wherein, a safe and effective adsorbent is the key to filter out bilirubin successfully in PP. In this work, a simple engineering strategy, a new porous polymer adsorption resin ERM-0100 based on the homopolymer predispersion system, is proposed to produce high-performance bilirubin adsorbents. Preliminary experimental results show that ERM-0100 exhibits a large surface area and uniformly porous structure. Experimental results verify that ERM-0100 has high biocompatibility and bilirubin adsorption efficiency (TBIL:35%, direct bilirubin [DBIL]:30%, IBIL:87%) that is significantly higher than most of the reported adsorbents. Animal experiments prove that ERM-0100 has high bilirubin adsorption efficiency and can improve the liver function of animals. The combination of high biocompatibility and high adsorption capacity positions the ERM-0100 as a promising candidate for bilirubin removal.
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Bilirrubina , Enfermedades del Sistema Digestivo , Adsorción , Animales , Humanos , Hiperbilirrubinemia/terapia , Modelos AnimalesRESUMEN
Rural dog populations have long been recognized to be inadequately managed in terms of disease control and prevention. In this study we consider dog management in rural Shanghai and its implications for rabies control in the entire metropolitan area of Shanghai. The prerequisite to improve rabies vaccination coverage in rural Shanghai depends on a proper enumeration of the total rural dog population. In this study we selected one of the nine administrative districts in Shanghai (Jiading), within which there are 7 towns and 2 industrial zones (township-level division) that contain agricultural areas. A total of 9 villages (rabies model villages) were chosen from each township-level division in Jiading, and an additional 3 non-model villages were also included in the study. A household questionnaire survey was implemented in all 12 villages recruited. In 3 of the model villages and the 3 non-model villages chosen as a comparison, two methods of enumeration-a sight-resight survey and a household census survey-were implemented. Results from the household survey in these 6 villages showed that among the total 1,560 owned dogs, 80.4% were Chinese Garden Dogs, 69.1% were aged 1 to 3 years, 49.2% were homebred, and 88.3% were kept for the purpose of guarding the house. However, only 3.7% of the owned dogs were desexed. There was a higher proportion of chained or confined dogs in model compared to non-model villages. The model villages had an absolute rabies vaccination coverage of 100% among its owned dog population and a smaller number of stray dogs. It was also identified that the two enumeration methods yielded similar counts (P = 0.12), particularly within smaller villages. From the questionnaire survey implemented within all 12 villages and based on the average human-to-dog ratio, the total rural dog population of Jiading district was estimated to be 24,058. This study generated information on the general demographics of the rural dog population in Jiading, and demonstrates an approach to the study of rural dog populations within the context of a megacity. In such a context, rural dog populations need to be considered as a critical component of animal and public health.
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BACKGROUND: Public knowledge and awareness of palliative care (PC) is important to its effective use. However, it remains unclear whether the geographic variation in knowledge of PC exits in the United States. This study examined the national geographic variation in knowledge of PC. METHODS: The study sample was obtained from the 2018 National Cancer Institute's Health Information National Trends Survey. Basic knowledge of PC, goal concordant treatment, misconceptions, and primary information source of PC were compared across 4 census regions. Multivariable logistic regression was used to examine factors associated with awareness of PC among 9 census divisions. RESULTS: A total of 3194 respondents (weighted sample size: 229 591 005) were included in this study. Overall, 29% of all respondents reported having knowledge of PC; 32.9% of those residing in Northeast had some knowledge of PC, followed by 30.8% in the South, 26.2% in Midwest, and 25.6% in West. By census divisions, respondents residing in 3 divisions were more likely to have PC knowledge (New England, odds ratio: 3.06, 95% CI: 1.48-6.32, P = .003; South Atlantic, odds ratio: 1.96, 95% CI: 1.15-3.35, P = .014; Pacific, odds ratio: 1.86, 95% CI: 1.12-3.09, P = .018) compared to those in the Mountain division. CONCLUSIONS: The variation of PC knowledge on census division and state level in 2018 was consistent with the real-world geographic disparities in the availability of PC programs. These findings represent an opportunity for minimizing the gap of geographic disparity by initiating strategic programs and promoting PC programs nationwide.
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Enfermería de Cuidados Paliativos al Final de la Vida , Neoplasias , Adulto , Conocimientos, Actitudes y Práctica en Salud , Humanos , Cuidados Paliativos , Encuestas y Cuestionarios , Estados UnidosRESUMEN
BACKGROUND: Pregnant women are a vulnerable population exposed to opioids in the United States. OBJECTIVE: To examine trends and factors associated with opioid prescribing to women proximal to pregnancy. METHODS: The 2011 to 2015 Medical Expenditure Panel Survey (MEPS) was used to identify participants (n = 3020) with self-reported pregnancy or pregnancy-relevant events aged between 18 and 44 years old. To investigate factors associated with opioid prescriptions, we categorized participants into two subgroups: having one or more opioid prescription or having none during the observational period. We used survey multivariable logistic regression to identify factors associated with opioid prescribing accounting for the complex survey design in MEPS. RESULTS: From 2011 to 2015, the prevalence of opioid prescribing among study participants was 31%. Opioids were more likely to be prescribed to women who had psychiatric conditions (odds ratio, 1,76, 95%CI: 1.27-2.44, p < 0.001). Other significant factors included being non-Hispanic white or black, living in the South, active tobacco users, and those with lower Physical Component Summary Scores. CONCLUSION: Receipt of an opioid prescription in the perinatal period is associated with maternal psychiatric disorders in the United States. Study findings add new data to the literature on opioid use among pregnant women and provide evidence for healthcare providers and policy makers to tailor treatment and educational programs to avoid opioid overuse among pregnant women.
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Analgésicos Opioides , Trastornos Relacionados con Opioides , Adolescente , Adulto , Analgésicos Opioides/uso terapéutico , Prescripciones de Medicamentos , Femenino , Gastos en Salud , Humanos , Trastornos Relacionados con Opioides/tratamiento farmacológico , Trastornos Relacionados con Opioides/epidemiología , Pautas de la Práctica en Medicina , Embarazo , Prescripciones , Estados Unidos , Adulto JovenRESUMEN
Flavonoids in tea plant are the important bioactive compounds for both human health and taste quality. Multidrug and Toxic compound Extrusion (MATE) proteins could improve flavonoid accumulations by transporting and sequestering the flavonoid in vacuoles. We identified 41 putative MATE genes in tea plants. The similar intron-exon structures of tea MATEs clustered within the same gene clade. The correlation analysis of tea flavonoid and transcriptome data showed that TEA006173 might be involve in the tea flavonoid accumulation. The RT-PCR results confirmed that TEA006173 showed high expression in the young leaf tissues. Tertiary structure prediction has shown that TEA006173 contained the 12 helices with three active pockets, comprising 13 critical residues. The present study provided the structural variations and expression patterns of tea MATEs and it would be helpful for taste and nutrient quality improvement in tea plant.
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Camellia sinensis/metabolismo , Simulación por Computador , Flavonoides/metabolismo , Proteínas de Transporte de Membrana/metabolismo , Proteínas de Plantas/metabolismo , Secuencias de Aminoácidos , Secuencia de Aminoácidos , Camellia sinensis/genética , Secuencia Conservada , Exones/genética , Regulación de la Expresión Génica de las Plantas , Genoma de Planta , Intrones/genética , Proteínas de Transporte de Membrana/química , Filogenia , Hojas de la Planta/genética , Hojas de la Planta/crecimiento & desarrollo , Proteínas de Plantas/química , Proteínas de Plantas/genética , Estructura Terciaria de Proteína , Transcriptoma/genéticaRESUMEN
The aim of this study is to explore the effects of Manganese addition and homogenization treatment on the microstructures and mechanical properties of the Al-7Mg-0.15Ti (B535.0) alloy. The optical microscopy, electrical conductivity measurements, transmission electron microscopy, scanning electron microscopy (SEM + EBSD), as well as Rockwell hardness and tensile tests, were exploited for this purpose. The main objectives are to refine the grain size, inhibit grain growth in the annealed state, and enhance the mechanical strength of the alloy. The results show that the addition of manganese to the Al-7Mg-0.15Ti alloys refined the as-cast and recrystallized grains of the alloys. During the homogenization process, Al4Mn high-temperature stable dispersoids were precipitated in the aluminum matrix. After annealing, the Al4Mn particles blocked the movement of grain boundaries during the growth of the recrystallized grains and inhibited grain growth. Consequently, the annealed alloys showed grain refinement and dispersion strengthening. The Al4Mn dispersoids of the alloys with manganese added were smaller and denser after a two-stage homogenization process compared to those that underwent a one-stage homogenization process. By contrast, for the alloys without the addition of manganese, the recrystallized grains showed normal growth after annealing, and different homogenization processes had no significantly different effects.
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Aleaciones/química , Aluminio/química , Manganeso/química , Titanio/química , Ensayo de Materiales , Estrés Mecánico , Propiedades de Superficie , Resistencia a la TracciónRESUMEN
The objective of this study was to compare the effect of pulsatile gonadorelin pump (PGP) and cyclical gonadotropin (human chorionic gonadotropin [HCG]/human menopausal gonadotropin [HMG]) therapy (CGT) on spermatogenesis in congenital hypogonadotropic hypogonadism (CHH) men. Twenty-eight azoospermic CHH males were included in this nonrandomized study. Ten received PGP and 18 received CGT. The primary endpoint was the earliest time spermatogenesis occurred during 24 months of treatment. Spermatogenesis time was significant earlier in the PGP group than the CGT group (median of 6 and 14 months, respectively, χ2 = 6.711, p = .01). Spermatogenesis occurred in 90% of the PGP group and 83.3% of the CGT group and showed statistically insignificant difference in the superiority analysis and the no-inferior test. Contributing factors significant for spermatogenesis were previous HCG/or testosterone treatment and the peak serum luteinizing hormone level of triptorelin stimulation test at baseline. Although testis volume and penile length increased significantly from baseline, the differences between the two therapies were not significant. There was a tendency for high serum testosterone level, associated with more facial acne and breast tenderness in the CGT group. Skin allergic erythema scleroma was a common side effect of the PGP. In summary, PGP resulted in earlier spermatogenesis and more desirable testosterone levels than CGT.
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Gonadotropina Coriónica/administración & dosificación , Hormona Liberadora de Gonadotropina/administración & dosificación , Hipogonadismo/tratamiento farmacológico , Espermatogénesis/efectos de los fármacos , Adolescente , Adulto , China , Humanos , Hipogonadismo/congénito , Bombas de Infusión , Masculino , Testosterona/sangreRESUMEN
The synthetic opioid propoxyphene was a schedule IV controlled substance with multiple reported health risks before the US Food and Drug Administration issued a request for voluntary market withdrawal in November 2010. The purpose of this study is to investigate the characteristics and occurrences of propoxyphene-related deaths in Florida before and after voluntary market removal. Decedent-level toxicology data from Florida's Medical Examiners Commission was used to compare the temporal, polysubstance use, sociodemographic, and geographic profiles associated with propoxyphene-involved deaths for a pre-withdrawal (November 2008-November 2010) and post-withdrawal (December 2010-December 2012) period. Sensitivity analyses using multiple data sources, including Florida's Prescription Drug Monitoring Program and other states' data, were conducted to examine potential reporting bias. Results showed that the number of propoxyphene-involved deaths declined by 84% from 580 deaths to 92 deaths after market withdrawal. The co-occurrence of other prevalent drugs, such as oxycodone (17.2% to 26.1%, p=0.0422) increased significantly in the post-withdrawal study period. A larger proportion of the propoxyphene-related deaths were reported from South Florida after the withdrawal (28.4% to 56.5%, p<0.0001). No significant changes in age and race/ethnicity were observed. Sensitivity analyses revealed that several deaths occurred in other states after market withdrawal, as recently as 2016. Our findings are consistent with previous studies that propoxyphene was still available after removal from the US market. Continued surveillance is recommended after highly abused opioids are withdrawn from the market due to on-going safety risks.
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Analgésicos Opioides/envenenamiento , Dextropropoxifeno/envenenamiento , Retirada de Medicamento por Seguridad , Accidentes/mortalidad , Adulto , Distribución por Edad , Anciano , Sobredosis de Droga/mortalidad , Femenino , Florida/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Intoxicación/mortalidad , Distribución por Sexo , Suicidio/estadística & datos numéricosRESUMEN
Guided by a "chemistry first" approach using molecular networking, eight new bright-blue colored natural compounds, namely dactylocyanines A-Hâ (3-10), were isolated from the Polynesian marine sponge Dactylospongia metachromia. Starting from ilimaquinoneâ (1), an hemisynthetic phishing probe (2) was prepared for annotating and matching structurally related natural substances in D.â metachromia crude extract network. This strategy allowed characterizing for the first time in Nature the blue zwitterionic quinonoid chromophore. The solvatochromic properties of the latter are reported.
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Clortetraciclina/análogos & derivados , Poríferos/química , Animales , Productos Biológicos/síntesis química , Productos Biológicos/química , Productos Biológicos/aislamiento & purificación , Clortetraciclina/síntesis química , Clortetraciclina/aislamiento & purificación , Cromatografía Líquida de Alta Presión , Cristalografía por Rayos X , Espectroscopía de Resonancia Magnética , Conformación Molecular , Poríferos/metabolismo , Quinonas/química , Sesquiterpenos/química , Espectrometría de Masas en TándemRESUMEN
As more and more studies suggest that type 2 diabetes mellitus (T2DM) is closely related to male hypogonadism, people begin to pay more attention to the role of testosterone in the development of T2DM and the effect and safety of testosterone supplementary therapy. There is some controversy in randomized controlled studies and meta-analyses about the effects of testosterone supplementation on the blood glucose level, androgen deficiency symptoms, and cardiovascular diseases. This review focuses on the diagnosis of hypogonadism in T2DM males, differences in the therapeutic effects and safety of testosterone replacement among different studies, and rational use of testosterone supplementation for T2DM patients.