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BACKGROUND: Studies relating diet to angiographic coronary artery disease (CAD) and subsequent major adverse cardiac events (MACE) in women are limited. Information on diet was collected in the Women's Ischemia Syndrome Evaluation (WISE), a prospective cohort study of symptomatic women referred for coronary angiography to evaluate suspected ischemic heart disease. METHODS: A consecutive subgroup (n = 201 of 936) of enrolled women completed the modified Block food frequency questionnaire (FFQ). Data on outcomes were collected and adjudicated after 8-year follow-up. A set of logistic regression models were fitted for non-obstructive versus obstructive coronary stenosis (<50% versus ≥50%). Cox proportional hazard regression models were fitted for outcomes, with each dietary composition variable adjusted for the degree of coronary stenosis. RESULTS: At baseline, the subgroup cohort was 58 ± 12 years old with a body mass index (BMI) of 30 ± 7 kg/m2. An increased proportion of calories consumed from protein was associated with higher levels of baseline obstructive coronary stenosis. Those individuals who ate a higher amount of protein, carotene, and servings of vegetables and meat, however, were each associated with lower subsequent adverse outcomes, respectively. CONCLUSIONS: Among women undergoing coronary angiography for suspected CAD, a higher percentage of protein intake was associated with higher baseline stenosis severity; however, the amount of protein intake, vegetable, meat, and carotene intake, was conversely associated with subsequent lower adverse cardiovascular outcome risk.
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BACKGROUND: The American College of Obstetricians and Gynecologists recommends delivery in the 39th week of pregnancy for patients with pregestational and medication-controlled gestational diabetes with consideration for earlier delivery among those with poor glucose control. OBJECTIVE: We sought to evaluate the impact of birth before 39 weeks' gestation exclusively for diabetes-related indications on neonatal outcomes and clinician rationale for these recommendations. STUDY DESIGN: This was a retrospective cohort study of all singleton, nonanomalous pregnancies complicated by diabetes. Patients were identified through an obstetrical database containing information of 90,185 births from 2011 to 2021. Patients who delivered in a given week of gestation exclusively for diabetes-related indications were compared with ongoing pregnancies. Recommended births for other obstetrical indications were excluded from the diabetes-related indications cohorts. The primary outcome was neonatal intensive care unit admission. Secondary outcomes included neonatal intensive care unit length of stay, stillbirth, neonatal death, hypoglycemia, respiratory distress syndrome, and shoulder dystocia. For all births before 39 weeks' gestation, the electronic medical records were reviewed to confirm the rationale for the intervention for a diabetes-indicated condition. RESULTS: From the 90,185 recorded births that occurred in 2011 to 2021, 4750 patients with diabetes were identified. Of those, 30.5% (n=1449) had a recommended birth for a diabetes-related indications with 2.2% of those (n=32) occurring at 36 weeks' gestation, 7.9% (n=114) at 37 weeks' gestation, 9.7% (n=141) at 38 weeks' gestation, and 63.0% (n=913) at 39 weeks' gestation. Births that occurred at 36 and 37 weeks' gestation exclusively for diabetes-related indications had higher rates of neonatal intensive care unit admission than the respective ongoing pregnancies (62.5% vs 8.7%; P<.001 and 25.4% vs 7.2%; P<.001). There was no difference in neonatal intensive care unit admission for births at 38 or 39 weeks' gestation when compared with ongoing pregnancy. For neonates born at 36 and 37 weeks' gestation in comparison with ongoing pregnancies, the median neonatal intensive care unit length of stay was 11.0 vs 2.8 days, (P<.001) and 4.4 vs 2.6 days (P=.026), respectively. There were significantly increased rates of neonatal hypoglycemia and respiratory distress syndrome among births that occurred at 36, 37, and 38 weeks' gestation when compared with ongoing pregnancies. There were no differences in the rate of stillbirth in this cohort. Primary factors cited for early birth were poor glycemic control (71.4%), recommendation by a maternal-fetal medicine specialist (38.7%), and suspected fetal macrosomia (27.9%). Overall, 46.7%, 32.8%, and 20.6% of patients had 1, 2, or ≥3 indications, respectively, listed as rationale for early birth. Overall, few objective measures were used to recommend birth before 39 weeks' gestation owing to diabetes. CONCLUSION: In pregnancies complicated by diabetes, early birth exclusively for diabetes-related indications was associated with increased neonatal intensive care unit admission and length of stay and with neonatal morbidity. Little objective data are documented by clinicians to support their recommendations for early birth associated with diabetes. Additional clinical guidelines are needed to define suboptimal glucose control necessitating birth before 39 weeks' gestation.
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Diabetes Gestacional , Hipoglucemia , Síndrome de Dificultad Respiratoria , Embarazo , Recién Nacido , Femenino , Humanos , Mortinato/epidemiología , Estudios Retrospectivos , Glucemia , Diabetes Gestacional/diagnóstico , Diabetes Gestacional/epidemiología , Diabetes Gestacional/terapia , Hipoglucemia/diagnóstico , Hipoglucemia/epidemiología , Hipoglucemia/etiologíaRESUMEN
In the current study, population pharmacokinetic (PK) of ampicillin-sulbactam was performed based on the clinical pharmacokinetics data collected from a prospective study conducted in 40 surgical patients undergoing prolonged surgery where antibiotic redosing was implemented. A population PK model was successfully developed to characterize the disposition of ampicillin and sulbactam. The final models were two-compartment models for both drugs, with creatinine clearance and heart failure affecting clearance and body surface area having an impact on the central volume of distribution of both ampicillin and sulbactam. Comprehensive Monte Carlo simulations were performed to evaluate the probability of target attainment (PTA) of 24 different redosing scenarios. Simulation results indicated that the ampicillin-sulbactam 2-h redosing scheme recommended by ASHP guidelines is likely too conservative given that 3-g dose (2-g ampicillin/1-g sulbactam) with 4-h redosing interval can reach the breakpoint of 2 mg/L for ampicillin in all populations even with the aggressive pharmacokinetic/pharmacodynamic (PK/PD) target of 100% fT > MIC. With the target 50% fT > MIC, all redosing schemes evaluated, including the 8-h redosing scenario, are predicted to be able to reach the breakpoint of 64 mg/L in all patients. According to our findings, redosing of ampicillin-sulbactam should be every 4 h instead of the currently recommended 2-h redosing schedule. Our PTA results should inform future updates to existing general antibiotic redosing guidelines; and, when used in combination with the availability of institution- and/or unit-specific ampicillin susceptibility patterns, our PTA results may be used to customize SSI prophylaxis redosing recommendations for ampicillin-sulbactam at individual hospitals.
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Ampicilina , Sulbactam , Humanos , Sulbactam/farmacología , Estudios Prospectivos , Ampicilina/uso terapéutico , Antibacterianos/farmacocinéticaRESUMEN
Eight treatments of edible coatings and nets including liquid smoke (SP and 24P) and xanthan gum (XG) were used to evaluate their effectiveness at controlling mite growth on dry-cured hams. Mite growth was controlled (P < 0.05) in both coating and netting treatments of 1% SP + 1% XG. Increasing SP concentration from 1% to 2% in the SP only treatments without XG did not control mite growth (P > 0.05) in the coating but controlled mite growth (P < 0.05) when infused in the nets. Both coating and netting treatments with 2% 24P + 1% XG controlled mite growth (P < 0.05), and ham cubes with 1% and 2% 24P in infused nets had mite numbers of 4.6 and 9.4, respectively. SP did not impact the sensory attributes of the ham. Results indicate that liquid smoke can potentially be added in coatings or ham nets to control mites and used in an integrated pest management program for dry-cured hams.
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Ácaros , Carne de Cerdo , Animales , Humo , Control de Plagas/métodos , EnvejecimientoRESUMEN
Transit-oriented development (TOD) has been promoted worldwide as an integrated land-use and transportation strategy to foster urban sustainability. Bike share provides people with a convenient and relatively affordable way to enlarge the spatial scale of TODs across urban communities, as a solution to the first/last mile (FLM) issue with respect to the transit nodes of TODs. Even though barriers to FLM have been frequently studied, few studies incorporate people's perceptions of their barriers and/or the integration of multiuse paths (MUPs) into the network of bike share and public transit. Using a survey conducted in the Greater Cincinnati area, Ohio, this study aimed to answer the following questions: (1) What are people's major barriers to integrating different green transportation modes and/or facilities (bike share, MUPs, public transit)? (2) To what extent does the built environment around people's residential location affect their integration level of MUPs, bike share, and public transit? (3) Which improvements would most likely encourage people to integrate them more often? With descriptive statistics, spatial analysis, and statistical comparison, we found that (1) the major barrier to integrating MUPs into the green transportation system was their lack of connection and availability to transit and bike share; (2) a person's living environment is spatially related to whether a person integrates bike share; and (3) more respondents would use MUPs more often if an integrated green transportation system could be provided or improved. These findings suggest the potential of incorporating MUPs and bike share into TOD strategies to address the FLM issue.
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BACKGROUND: Anti-malarial resistance remains an important public health challenge in Cambodia. The effectiveness of three therapies for uncomplicated falciparum malaria was evaluated in Oddar Meanchey province in Northern Cambodia from 2009 to 2011. METHODS: In this randomized, open-label, parallel group-controlled trial, 211 subjects at least 5 years old with uncomplicated falciparum malaria were treated with 3 days of directly observed therapy: 63 received artesunate-mefloquine (AS/MQ), 77 received dihydroartemisinin-piperaquine (DHA/PPQ), and 71 received atovaquone-proguanil (ATQ/PG). The subjects were followed for 42 days or until recurrent parasitaemia. Genotyping of msp1, msp2, and glurp among individual parasite isolates distinguished recrudescence from reinfection. Pfmdr1 copy number was measured by real-time PCR and half-maximal parasite inhibitory concentrations (IC50) were measured in vitro by 48-h isotopic hypoxanthine incorporation assay. RESULTS: The per-protocol PCR-adjusted efficacy (95% confidence interval) at 42 days was 80.6% (70.8-90.5%) for AS/MQ, 97.2% (93.3-100%) for DHA/PPQ, and 92.9% (86.1-99.6%) for ATQ/PG. On day 3, 57.9% remained parasitaemic in the AS/MQ and DHA/PPQ arms. At baseline, 46.9% had microscopic Plasmodium falciparum gametocytaemia. Both recurrences in the DHA/PPQ arm lost Pfmdr1 copy number amplification at recrudescence. All four recurrences in the ATQ/PG arm were wild-type for cytochrome bc1. One subject withdrew from the ATQ/PG arm due to drug allergy. CONCLUSIONS: This study was conducted at the epicentre of substantial multi-drug resistance that emerged soon thereafter. Occurring early in the national transition from AS/MQ to DHA/PPQ, both DHA/PPQ and ATQ/PG had acceptable efficacy against uncomplicated falciparum malaria. However, efficacy of AS/MQ was only 80% with apparent mefloquine resistance based on elevated Pfmdr1 copy number and IC50. By 2009, there was already significant evidence of artemisinin resistance not previously reported at the Northern Cambodia-Thai border. This study suggests the basis for early development of significant DHA/PPQ failures within 3 years of introduction. Artemisinin resistance likely occurred on the Northern border concurrently with that reported along the Western border in Pailin. Trial registration This legacy trial was conducted prior to International Committee of Medical Journal Editors' requirements for preregistration on ClinicalTrials.gov. The full protocol has been provided.
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Antimaláricos , Artemisininas , Malaria Falciparum , Antimaláricos/farmacología , Antimaláricos/uso terapéutico , Artemisininas/farmacología , Artemisininas/uso terapéutico , Artesunato/uso terapéutico , Cambodia , Preescolar , Humanos , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/parasitología , Mefloquina/farmacología , Mefloquina/uso terapéutico , Ensayos Clínicos Controlados Aleatorios como Asunto , RecurrenciaRESUMEN
Fire has transformative effects on soil biological, chemical, and physical properties in terrestrial ecosystems around the world. While methods for estimating fire characteristics and associated effects aboveground have progressed in recent decades, there remain major challenges in characterizing soil heating and associated effects belowground. Overcoming these challenges is crucial for understanding how fire influences soil carbon storage, biogeochemical cycling, and ecosystem recovery. In this paper, we present a novel framework for characterizing belowground heating and effects. The framework includes (1) an open-source model to estimate fire-driven soil heating, cooling, and the biotic effects of heating across depths and over time (Soil Heating in Fire model; SheFire) and (2) a simple field method for recording soil temperatures at multiple depths using self-contained temperature sensor and data loggers (i.e., iButtons), installed along a wooden stake inserted into the soil (i.e., an iStake). The iStake overcomes many logistical challenges associated with obtaining temperature profiles using thermocouples. Heating measurements provide inputs to the SheFire model, and modeled soil heating can then be used to derive ecosystem response functions, such as heating effects on microorganisms and tissues. To validate SheFire estimates, we conducted a burn table experiment using iStakes to record temperatures that were in turn used to fit the SheFire model. We then compared SheFire predicted temperatures against measured temperatures at other soil depths. To benchmark iStake measurements against those recorded by thermocouples, we co-located both types of sensors in the burn table experiment. We found that SheFire demonstrated skill in interpolating and extrapolating soil temperatures, with the largest errors occurring at the shallowest depths. We also found that iButton sensors are comparable to thermocouples for recording soil temperatures during fires. Finally, we present a case study using iStakes and SheFire to estimate in situ soil heating during a prescribed fire and demonstrate how observed heating regimes would influence seed and tree root vascular cambium survival at different soil depths. This measurement-modeling framework provides a cutting-edge approach for describing soil temperature regimes (i.e., soil heating) through a soil profile and predicting biological responses.
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Incendios , Incendios Forestales , Ecosistema , Calefacción , Humanos , Suelo/químicaRESUMEN
BACKGROUND: Glioblastoma multiforme (GBM) is the most common high-grade malignant brain tumour in adults and arises from the glial cells in the brain. The prognosis of treated GBM remains very poor with 5-year survival rates of 5%, a figure which has not improved over the last few decades. Currently, there is a modest 14-month overall median survival in patients undergoing maximum safe resection plus adjuvant chemoradiotherapy. HOX gene dysregulation is now a widely recognised feature of many malignancies. METHODS: In this study we have focused on HOX gene dysregulation in GBM as a potential therapeutic target in a disease with high unmet need. RESULTS: We show significant dysregulation of these developmentally crucial genes and specifically that HOX genes A9, A10, C4 and D9 are strong candidates for biomarkers and treatment targets for GBM and GBM cancer stem cells. We evaluated a next generation therapeutic peptide, HTL-001, capable of targeting HOX gene over-expression in GBM by disrupting the interaction between HOX proteins and their co-factor, PBX. HTL-001 induced both caspase-dependent and -independent apoptosis in GBM cell lines. CONCLUSION: In vivo biodistribution studies confirmed that the peptide was able to cross the blood brain barrier. Systemic delivery of HTL-001 resulted in improved control of subcutaneous murine and human xenograft tumours and improved survival in a murine orthotopic model.
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Neoplasias Encefálicas , Glioblastoma , Adulto , Animales , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/genética , Línea Celular Tumoral , Genes Homeobox , Glioblastoma/tratamiento farmacológico , Glioblastoma/terapia , Humanos , Ratones , Péptidos/genética , Distribución TisularRESUMEN
Rangelands worldwide have experienced significant shifts from grass-dominated to woody-plant dominated states over the past century. In North America, these shifts are largely driven by overgrazing and landscape-scale fire suppression. Such shifts reduce productivity for livestock, can have broad-scale impacts to biodiversity, and are often difficult to reverse. Restoring grass dominance often involves restoring fire as an ecological process. However, many resprouting woody plants persist following disturbance, including fire, by resprouting from protected buds, rendering fire ineffective for reducing resprouting woody plant density. Recent research has shown that extreme fire (high-energy fires during periods of water stress) may reduce resprouting capacity. This previous research did not examine whether high-energy fires alone would be sufficient to cause mortality. We created an experimental framework for assessing the "buds-protection-resources" hypothesis of resprouting persistence under different fire energies. In July-August 2018 we exposed 48 individuals of a dominant resprouting woody plant in the region, honey mesquite (Prosopis glandulosa), to two levels of fire energy (high and low) and root crown exposure (exposed vs unexposed) and evaluated resprouting capacity. We censused basal and epicormic resprouts for two years following treatment. Water stress was moderate for several months leading up to fires but low in subsequent years. Epicormic and basal buds were somewhat protected from low- and high-energy fire. However, epicormic buds were protected in very few mesquites subjected to high-energy fires. High-energy fires decreased survival, caused loss of apical dominance, and left residual dead stems, which may increase chances of mortality from future fires. Basal resprout numbers were reduced by high-energy fires, which may have additional implications for long-term mesquite survival. While the buds, protection, and resources components of resprouter persistence all played a role in resprouting, high-energy fire decreased mesquite survival and reduced resprouting. This suggests that high-energy fires affect persistence mechanisms to different extents than low-energy fires. In addition, high-energy fires during normal rainfall can have negative impacts on resprouting capacity; water stress is not a necessary precursor to honey mesquite mortality from high-energy fire.
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Incendios , Prosopis , Ecosistema , Plantas , MaderaRESUMEN
The data in this manuscript are comprised of loggerhead sea turtle nesting records and coyote depredation events on South Island Beach in the Tom Yawkey Preserve, South Carolina, from 2015 to 2019 comprise the data in this manuscript. We compared the nesting and depredation rates with abiotic factors that may have influenced them. We analysed our data using G-tests to determine whether any abiotic factors were associated with coyote depredations or the timing of loggerhead nesting. Data were collected in conjunction with an experiment testing a possible conservation tool to deter coyote depredation of loggerhead sea turtle nests (Wauson and Rogers 2021). An Excel® file contains the entire data set in the supplemental material. Tables and their corresponding statistics test whether behavioural traits of loggerhead sea turtles and coyotes change based on certain abiotic factors, as well as how coyote depredation rates behaviour change in the presence of wolf urine.
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BACKGROUND: Delayed cerebral ischemia (DCI) is a cause of morbidity associated with aneurysmal subarachnoid hemorrhage (aSAH). Neuroinflammation contributes to the development of DCI. Melatonin is a sleep-promoting hormone known to have cerebral anti-inflammatory properties. We hypothesized that synthetic melatonin (or the selective melatonin receptor agonist ramelteon) incidentally prescribed to improve sleep may lower the incidence of DCI among hospitalized aSAH patients. METHODS: Subjects with a Hunt and Hess Grade I-III were identified from a data registry involving all aSAH patients admitted to our hospital between January 2015 and September 1, 2018. A cohort of patients who received either melatonin or ramelteon during their hospitalization was compared to a matched cohort that did not receive these drugs. The primary endpoint was incidence of DCI. Secondary outcomes included modified Rankin score (mRS) at discharge, discharge destination, and mortality at 6 weeks from discharge. The two groups were compared using univariate analysis. P < 0.05 was considered significant. RESULTS: There was no significant difference in the incidence of DCI (15.8% vs. 16.9%, p = 1), discharge mRS (mRS 0-3: 51.3% vs. 45.1%, p = 0.59), discharge disposition (Home: 43.6% vs. 44.4, p = 0.47), or mortality (0% vs. 9.2%; p = 0.074) between the melatonin/ramelteon and non-melatonin groups. CONCLUSION: The use melatonin had no effect on DCI but may improve mortality in aSAH subjects. Prospective studies using a larger cohort are warranted to validate these findings.
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Antioxidantes/uso terapéutico , Melatonina/uso terapéutico , Hemorragia Subaracnoidea/tratamiento farmacológico , Hemorragia Subaracnoidea/mortalidad , Adulto , Anciano , Estudios de Casos y Controles , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mortalidad/tendencias , Sistema de Registros , Estudios Retrospectivos , Factores de RiesgoRESUMEN
Increasingly, land managers have attempted to use extreme prescribed fire as a method to address woody plant encroachment in savanna ecosystems. The effect that these fires have on herbaceous vegetation is poorly understood. We experimentally examined immediate (<24 hr) bud response of two dominant graminoids, a C3 caespitose grass, Nassella leucotricha, and a C4 stoloniferous grass, Hilaria belangeri, following fires of varying energy (J/m2) in a semiarid savanna in the Edwards Plateau ecoregion of Texas. Treatments included high- and low-energy fires determined by contrasting fuel loading and a no burn (control) treatment. Belowground axillary buds were counted and their activities classified to determine immediate effects of fire energy on bud activity, dormancy, and mortality. High-energy burns resulted in immediate mortality of N. leucotricha and H. belangeri buds (p < .05). Active buds decreased following high-energy and low-energy burns for both species (p < .05). In contrast, bud activity, dormancy, and mortality remained constant in the control. In the high-energy treatment, 100% (n = 24) of N. leucotricha individuals resprouted while only 25% (n = 24) of H. belangeri individuals resprouted (p < .0001) 3 weeks following treatment application. Bud depths differed between species and may account for this divergence, with average bud depths for N. leucotricha 1.3 cm deeper than H. belangeri (p < .0001). Synthesis and applications: Our results suggest that fire energy directly affects bud activity and mortality through soil heating for these two species. It is imperative to understand how fire energy impacts the bud banks of grasses to better predict grass response to increased use of extreme prescribed fire in land management.
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OBJECTIVE: Although depression is a prevalent and costly health problem exacting a large toll on work productivity, interventions targeting occupational functioning are rare. This article describes the development of the Tufts Be Well at Work intervention, a brief telephonic program designed to improve occupational functioning among employees with depression and reduce depression symptom severity. Results from 15 years of research are summarized evaluating the occupational, clinical, and economic impact of Be Well at Work. METHODS: The design, methods, and results of all six Tufts Be Well at Work studies are reported. Studies included an initial workplace pilot study, two workplace randomized clinical trials (RCTs), one RCT in a health care system, and two pilot implementation studies conducted in a workplace and in an academic medical center. RCTs compared Tufts Be Well at Work to usual care. RESULTS: Tufts Be Well at Work consistently and significantly improved occupational functioning, work productivity, and depression symptom severity. Employees randomly assigned to usual care experienced smaller gains. The program also delivered a positive return on investment. CONCLUSIONS: Evidence suggests that Tufts Be Well at Work is an effective intervention for improving occupational and clinical functioning. Its relatively low cost and its impact on work productivity contribute to its positive economic impact.
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Depresión , Lugar de Trabajo , Depresión/terapia , Eficiencia , Humanos , Encuestas y CuestionariosRESUMEN
The Gli-B1-encoded γ-gliadins and non-coding γ-gliadin DNA sequences for 15 different alleles of common wheat have been compared using seven tests: electrophoretic mobility (EM) and molecular weight (MW) of the encoded major γ-gliadin, restriction fragment length polymorphism patterns (RFLPs) (three different markers), Gli-B1-γ-gliadin-pseudogene known SNP markers (Single nucleotide polymorphisms) and sequencing the pseudogene GAG56B. It was discovered that encoded γ-gliadins, with contrasting EM, had similar MWs. However, seven allelic variants (designated from I to VII) differed among them in the other six tests: I (alleles Gli-B1i, k, m, o), II (Gli-B1n, q, s), III (Gli-B1b), IV (Gli-B1e, f, g), V (Gli-B1h), VI (Gli-B1d) and VII (Gli-B1a). Allele Gli-B1c (variant VIII) was identical to the alleles from group IV in four of the tests. Some tests might show a fine difference between alleles belonging to the same variant. Our results attest in favor of the independent origin of at least seven variants at the Gli-B1 locus that might originate from deeply diverged genotypes of the donor(s) of the B genome in hexaploid wheat and therefore might be called "heteroallelic". The donor's particularities at the Gli-B1 locus might be conserved since that time and decisively contribute to the current high genetic diversity of common wheat.
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Alelos , Genes de Plantas , Sitios Genéticos , Gliadina/genética , Seudogenes , Triticum/genéticaRESUMEN
Ampicillin-sulbactam is a broad-spectrum combination antibiotic used for a variety of clinical applications, including as a prophylactic agent to reduce the risk of surgical site infection. The pharmacokinetics of ampicillin-sulbactam after redosing during prolonged surgeries remains incompletely understood. In anticipation of further studying the intra-operative pharmacokinetics of this drug, we have developed a novel liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the quantification of ampicillin and sulbactam. The plasma samples were prepared using a simple protein precipitation method. Gradient chromatographic elution was used to separate analytes, and MS/MS analysis was performed in negative ionization mode for both analytes via multiple reaction monitoring (MRM). All validation parameters were evaluated under a good laboratory practice (GLP) environment. For both ampicillin and sulbactam, the lower limit of quantitation (LLOQ) was established as 0.25⯵g/mL. The calibration curve ranged from 0.25 to 200⯵g/mL for ampicillin and 0.25-100⯵g/mL for sulbactam. Inter- and intra-day precisions for both analytes were ≤11.5 % for quality controls and ≤17.4 % for LLOQ; accuracies ranged from -11.5 to 12.5% for 3 quality control levels and -18.1-18.7% for LLOQ. In addition to sensitivity, accuracy and precision, 13 other parameters were also validated for both analytes, and the results met the acceptance criteria. Our method was successfully applied to quantify ampicillin and sulbactam concentrations in patients undergoing surgery.
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Preparaciones Farmacéuticas , Espectrometría de Masas en Tándem , Ampicilina , Cromatografía Liquida , Humanos , Reproducibilidad de los Resultados , SulbactamRESUMEN
BACKGROUND/OBJECTIVES: Prior studies linked higher blood phytoestrogen (phytoE) levels of daidzein to beneficial lipoprotein profiles, and higher genistein levels related to worse coronary microvascular dysfunction in women with suspected ischemic heart disease (IHD). However, relationships to adverse outcomes remain unclear. We investigated the associations between eight serum phytoE and major adverse cardiac events (MACE) including myocardial infarction, stroke, hospitalization for heart failure and angina, cardiovascular and all-cause mortality, in women undergoing functional coronary angiography (FCA) for suspected ischemia. SUBJECTS/METHODS: We evaluated 143 women enrolled in the Women's Ischemia Syndrome Evaluation (1996-2001) for serum phytoE levels and 10-year outcomes. Median follow-up duration was 6.08 years (range 0.01-8.16) for time to MACE and 9.11 years (range 0.01-11.08 years) for time to death. Kaplan-Meier plots were analyzed and Cox regression models adjusted for age, body mass index, hypertension, diabetes, dyslipidemia and tobacco use. RESULTS: The median age was 54.7 (range 20.6-76.1) years and BMI was 29.3 (range 18.4-57.2). Of the cohort, 80.4% had nonobstructive coronary artery disease, 56% had hypertension, 22.4% had diabetes, 58.1% had dyslipidemia and 59.4% of the women used tobacco. Each unit decrease in log glycitin was associated with increased MACE hazard (HR 1.97, 95% [CI 1.23, 3.14], p = 0.005). Glycitin absence was associated with earlier angina hospitalization (log rank p = 0.05). After 6 years, MACE increased with each unit decrease in log genistein (HR 6.17, 95% [CI 1.81, 20.8], p = 0.0036). Other phytoE did not show statistically significant associations with outcomes. CONCLUSIONS: Among women with suspected IHD undergoing clinically indicated invasive FCA, low serum glycitin was associated with increased MACE and earlier angina hospitalization, while low genistein was associated with increased MACE after 6 years. Future studies are needed regarding phytoE, nutrition, outcomes and possibly supplementation.
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Enfermedad de la Arteria Coronaria , Isquemia Miocárdica , Adulto , Anciano , Angiografía Coronaria , Femenino , Humanos , Isquemia , Persona de Mediana Edad , Fitoestrógenos , Pronóstico , Factores de Riesgo , Adulto JovenRESUMEN
BACKGROUND: Excellent adherence to HIV antiretroviral therapy (ART) remains a cornerstone of HIV care. A three-item adherence self-report scale was recently developed and validated, but the scale has not been previously tested in a nationally representative sample. DESIGN: We administered the adherence scale to participants in the Centers for Disease Control and Prevention's Medical Monitoring Project, which is a probability sample of US adults with diagnosed HIV. METHODS: We combined sociodemographic and clinical participant data from three consecutive cycles of the Medical Monitoring Project (6/2015-5/2018). We used medical record reviews to determine most recent viral load, and whether viral loads were suppressed at all measurement points in the past 12 months. We describe the relationship between adherence scale score and two measures of viral load suppression (most recent and sustained), and estimate linear regression models using sampling weights to determine independent predictors of ART adherence scores. RESULTS: Of those using ART, the median adherence score was 93 (100â=âperfect adherence), and the standardized Cronbach's alpha was 0.83. For both measures of viral load suppression, the relationship with the adherence score was generally linear; there was no 'cutoff' point indicating good vs. poor adherence. In the multivariable model, younger age, nonwhite race, poverty, homelessness, depression, binge-drinking, and both non-IDU and IDU were independently associated with lower adherence. CONCLUSION: The adherence measure had good psychometric qualities and a linear relationship with viral load, supporting its use in both clinical care and research. Adherence interventions should focus on persons with the highest risk of poor adherence.
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Fármacos Anti-VIH , Infecciones por VIH , Cumplimiento de la Medicación , Adolescente , Adulto , Fármacos Anti-VIH/uso terapéutico , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Humanos , Masculino , Persona de Mediana Edad , Muestreo , Autoinforme , Conducta Sexual , Estados Unidos , Carga Viral , Adulto JovenRESUMEN
OBJECTIVE: To describe caregiving work outcomes and related indirect (ie, productivity) and direct (ie, caregiving hours and expenses) costs. METHODS: A national, population-based survey to identify employed caregivers assisting a person with treatment-resistant depression (TRD) and a comparison group of employed caregivers assisting others (No TRD). RESULTS: Screening identified 169 TRD caregivers and 1070 No TRD caregivers providing 23.3 and 14.6 mean weekly caregiving hours, respectively. Adjusted annual indirect cost estimates were $11,121 for caregivers of TRD and $7761 for caregivers in the No TRD group (Pâ≤â0.0001). At-work productivity loss (presenteeism) was the largest component. Adjusted annual direct cost estimates were $29,805 for caregivers of TRD and $20,642 for caregivers in the No TRD group (Pâ≤â0.0001). CONCLUSIONS: TRD exacts a toll on caregivers and their employers exceeding that for other caregivers.
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Cuidadores , Depresión/economía , Lugar de Trabajo , Costo de Enfermedad , Costos y Análisis de Costo , Eficiencia , Humanos , PresentismoRESUMEN
BACKGROUND: Perfectionism is currently conceptualized using a multidimensional model, with extensive research establishing the presence of both maladaptive and adaptive forms. However, the potential adaptability of procrastination, largely considered as a maladaptive construct, and its possible developmental connection to perfectionism remains unclear. The purpose of this study was to examine the individual differences of the multidimensional models of both perfectionism and procrastination, as well as investigating potential links between the two constructs. METHODS: A convenience sample of 206 undergraduate students participated in this study. Participants completed a questionnaire consisting of 236 questions regarding the variables under investigation. RESULTS: The adaptive model of procrastination yielded largely insignificant results and demonstrated limited links with adaptive perfectionism, while maladaptive procrastination was consistently associated with maladaptive perfectionism, lending further evidence of a unidimensional model of procrastination. CONCLUSIONS: Many previous findings regarding the multidimensional model of perfectionism were replicated, along with new contributions focusing on the dual-process model and temporal orientation.
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Perfeccionismo , Procrastinación , Estudiantes/psicología , Humanos , Estudiantes/estadística & datos numéricos , Encuestas y CuestionariosRESUMEN
BACKGROUND: Findings on the association between health literacy and anti-retroviral (ARV) adherence are inconsistent. Health literacy is usually operationalized with simple tests of basic literacy, but more complex conceptions of health literacy include content knowledge. People living with chronic illness also conceptualize and experience illness in ways other than biomedical or mechanistic models of disease. OBJECTIVE: There are no instruments that comprehensively assess knowledge of people living with HIV concerning HIV disease and treatment; or psychological adjustment to being HIV+. Little is known about the relationship between factual knowledge, or positive identification as HIV+, and anti-retroviral (ARV) adherence. METHODS: Formative work with in-depth semi-structured interviews, and cognitive testing, to develop a structured instrument assessing HIV-related knowledge, and personal meanings of living with HIV. Pilot administration of the instrument to a convenience sample of 101 respondents. KEY RESULTS: Respondents varied considerably in their expressed need for in-depth knowledge, the accuracy of their understanding of relevant scientific concepts and facts about ARV treatment, and psychological adjustment and acceptance of HIV+ status. Most knowledge domains were not significantly related to self-reported ARV adherence, but accurate knowledge specifically about ARV treatment was (r = 0.25, p = .02), as was an adapted version of the Need for Cognition scale (r = .256, p = .012). Negative feelings about living with HIV (r = .33, p = .0012), and medication taking (r = .276, p = .008) were significantly associated with non-adherence. CONCLUSION: The instrument may be useful in diagnosing addressable reasons for non-adherence, as a component of psychoeducational interventions, and for evaluation of such interventions.