pac Tactile Sensory Capacity of the Preterm Infant: Manual Perception of Shape From 28 Gestational Weeks By pediatrics.aappublications.org Published On :: 2012-06-25T00:07:29-07:00 Preterm infants from 33 gestational weeks can detect specific shape features (prism and cylinder) by touch (without visual control), and remember them; however, nothing is known about such abilities earlier in development.The preterm infant, even when very immature (from 28 gestational weeks), is endowed with tactile sensory abilities: the exploration and memorization of an object by touch, the discrimination of a novel object, and the recognition of a familiar object after interference. (Read the full article) Full Article
pac The Differential Impact of Delivery Hospital on the Outcomes of Premature Infants By pediatrics.aappublications.org Published On :: 2012-07-09T00:07:43-07:00 Data suggest that delivery at high-volume, high-technology hospitals reduces neonatal mortality. No study has examined other complications or compared the effects in multiple states by using a study design to control for unmeasured differences in case mix.The survival benefit to delivering at a high-level NICU between 1995 and 2005 is larger than previously reported and varies between states. The survival benefits affect both extremely and moderately preterm infants. Complication rates were similar between hospital types. (Read the full article) Full Article
pac The Impact of Macromastia on Adolescents: A Cross-Sectional Study By pediatrics.aappublications.org Published On :: 2012-07-16T00:07:02-07:00 Macromastia is associated with severe physical and emotional symptoms and negatively impacts health-related quality of life in adult women. Reduction mammaplasty is the most effective treatment for adults. Little is known regarding the impact of macromastia during adolescence.Adolescents with macromastia have impaired health-related quality of life, lower self-esteem, more breast-related symptoms, and are at higher risk for disordered eating in comparison with their peers. These negative health outcomes have implications for early intervention in this patient population. (Read the full article) Full Article
pac The Impact of a Healthy Media Use Intervention on Sleep in Preschool Children By pediatrics.aappublications.org Published On :: 2012-08-06T00:08:21-07:00 Although observational studies have consistently reported an association between media use and child sleep problems, it is unclear whether the relationship is causal or if an intervention targeting healthy media use can improve sleep in preschool-aged children.This study demonstrates that a healthy media use intervention can improve child sleep outcomes and adds evidence that the relationship between media and sleep in preschool-aged children is indeed causal in nature. (Read the full article) Full Article
pac Resident Work Hour Changes in Children's Hospitals: Impact on Staffing Patterns and Workforce Needs By pediatrics.aappublications.org Published On :: 2012-09-10T00:07:55-07:00 Changes in resident work hours are believed to have an impact on resident education and patient safety.This study provides an understanding of the impact of changes in resident work hours on the staffing strategies of children’s hospitals. (Read the full article) Full Article
pac Impact of Maternal Depressive Symptoms on Growth of Preschool- and School-Aged Children By pediatrics.aappublications.org Published On :: 2012-09-10T00:07:51-07:00 Few longitudinal studies from developing countries have assessed the relation between early maternal depressive symptoms and child growth beyond age 2. The results of these studies have been inconclusive.Early maternal depressive symptoms were related to higher odds of deficits in stature but not to deficits in weight among preschool- and school-aged children. Well-child care provides opportunities to identify maternal depressive symptoms to prevent future child growth delays. (Read the full article) Full Article
pac Impact of Neonatal Intensive Care on Late Preterm Infants: Developmental Outcomes at 3 Years By pediatrics.aappublications.org Published On :: 2012-10-01T00:07:26-07:00 Children born late preterm (34–36 weeks’ gestation) are at increased risk of adverse early childhood outcomes compared with term-born children. The impact of the neonatal experience on longer-term outcomes of these infants has not yet been well considered.This study provides information regarding the development of late preterm infants at 3 years. Late preterm infants who received neonatal intensive or high-dependency care had similar developmental outcomes to children born late preterm who did not receive this care. (Read the full article) Full Article
pac Occurrence and Family Impact of Elopement in Children With Autism Spectrum Disorders By pediatrics.aappublications.org Published On :: 2012-10-08T00:07:34-07:00 Anecdotal accounts that suggest elopement behavior occurs in children with autism spectrum disorders (ASDs), that injuries and fatalities can result, and that associated family burden and stress are substantial. However, there has been little research characterizing the phenomenon or its frequency.Nearly half of children with an ASD elope, and more than half of these "go missing." Elopement is associated with autism severity, and is often goal-directed. Addressing elopement behavior is an important aspect of intervention for many individuals with ASDs. (Read the full article) Full Article
pac Impact of Sleep Extension and Restriction on Children's Emotional Lability and Impulsivity By pediatrics.aappublications.org Published On :: 2012-10-15T00:08:09-07:00 Healthy sleep is essential for supporting alertness and other key functional domains required for academic success. Research involving the impact of modest changes in sleep duration on children’s day-to-day behavior in school is limited.This study shows that modest changes in sleep duration have significant impact on the behavior of typically developing children in school. Modest sleep extension resulted in detectable improvement in behavior, whereas modest sleep restriction had the opposite effect. (Read the full article) Full Article
pac Impact of a Third Dose of Measles-Mumps-Rubella Vaccine on a Mumps Outbreak By pediatrics.aappublications.org Published On :: 2012-11-05T00:07:48-08:00 Mumps outbreaks continue to occur among unvaccinated and highly vaccinated populations. In highly vaccinated populations, options for outbreak control are limited. No previous study has documented the impact of a third measles-mumps-rubella (MMR) vaccine dose on a mumps outbreak.Our study assessed the use of a third MMR vaccine dose for mumps outbreak control in a setting with preexisting high 2-dose vaccine coverage. The findings suggest a potential role of MMR vaccine for outbreak control in such limited settings. (Read the full article) Full Article
pac Growth Outcomes of Weight Faltering in Infancy in ALSPAC By pediatrics.aappublications.org Published On :: 2013-02-25T00:06:59-08:00 Studies of clinically derived samples of infants with failure to thrive have reported that children remain shorter and lighter than their peers at school-age. Enhanced weight gain ("catch-up") in small infants has been linked to subsequent obesity.Infants with early weight faltering caught up in weight by 2 years, but height gain remained disproportionally slow. Those with weight faltering later in infancy remained shorter and lighter throughout childhood. Anthropometric outcomes of both groups were within population norms at 13 years. (Read the full article) Full Article
pac The Impact of Parental Incarceration on the Physical and Mental Health of Young Adults By pediatrics.aappublications.org Published On :: 2013-03-18T00:07:07-07:00 Although a growing body of literature suggests links between parental incarceration and negative child outcomes, research that uses representative US samples and focuses on health outcomes is limited.Using a nationally representative US sample, we examined the association between parental incarceration and young adult mental and physical health outcomes. Results suggest childhood exposure to parental incarceration is associated with increased risk of long-term health problems. (Read the full article) Full Article
pac Pacifier Restriction and Exclusive Breastfeeding By pediatrics.aappublications.org Published On :: 2013-03-18T00:07:05-07:00 Pacifiers may interfere with breastfeeding and thus are discouraged until 3 to 4 weeks of life, when they are recommended for sudden infant death syndrome risk reduction. Hospitals are restricting pacifier distribution as part of the Baby-Friendly Hospital Initiative.We describe a temporal association between reduced exclusive breastfeeding and pacifier restriction. This observation encourages research on breastfeeding promotion and the effects of pacifiers and pacifier restriction on breastfeeding. (Read the full article) Full Article
pac The Impact of Social Networks on Parents' Vaccination Decisions By pediatrics.aappublications.org Published On :: 2013-04-15T00:06:43-07:00 Previous studies have suggested that health care providers, family members, friends, and others play a role in shaping parents’ vaccination decisions. Other research has suggested that the media can influence whether parents decide to vaccinate their children.Through the application of social network analysis, this study formally examines and quantifies how parents are influenced by the people and sources around them. Its findings suggest that social networks are important, particularly for parents who do not completely vaccinate. (Read the full article) Full Article
pac Cluster (School) RCT of ParentCorps: Impact on Kindergarten Academic Achievement By pediatrics.aappublications.org Published On :: 2013-04-15T00:06:42-07:00 At least half of the achievement gap for low-income, minority children is present at kindergarten entry; however, there are no population-level early childhood interventions that effectively engage and support families and teachers to ameliorate the impact of adversity on achievement.This study evaluated ParentCorps, a family-centered, school-based intervention to promote self-regulation and learning for all children entering school in disadvantaged, urban neighborhoods. ParentCorps results in higher kindergarten achievement among low-income, minority children. (Read the full article) Full Article
pac Effects of Reduced Juice Allowances in Food Packages for the Women, Infants, and Children Program By pediatrics.aappublications.org Published On :: 2013-04-29T00:06:30-07:00 Juice consumption among 2- to 5-year-old children exceeds dietary recommendations. In 2007, the US Department of Agriculture revised the composition and quantities of prescribed foods in WIC food packages to align them with dietary guidelines. Juice allowances were reduced by approximately half.WIC participants purchased about a quarter less juice volume after implementation of the revised WIC packages. Large reductions in WIC-provided juice were only partly compensated for by extra juice purchases with non-WIC funds. Little compensation occurred for other beverages. (Read the full article) Full Article
pac Honey Pacifier Use Among an Indigent Pediatric Population By pediatrics.aappublications.org Published On :: 2013-05-06T00:07:32-07:00 Botulinum spores are ubiquitous, found in the soil of most countries worldwide, and also in honey. It is well established that ingestion of honey by children aged <1 year can lead to infant botulism.This study examines the prevalence of honey pacifier use among a pediatric population aged <1 year. We also assessed parental knowledge of the dangers of giving honey to children in this age group. (Read the full article) Full Article
pac Pacifier Cleaning Practices and Risk of Allergy Development By pediatrics.aappublications.org Published On :: 2013-05-06T00:07:28-07:00 Infants with a diverse gut microbial flora are less likely to develop eczema and allergy.Parental sucking of their infant’s pacifier is associated with a reduced risk of allergy development and an altered oral flora in their child. Transfer of oral microbes from parent to infant via the pacifier might be used in primary prevention. (Read the full article) Full Article
pac Impact of Neonatal Growth on IQ and Behavior at Early School Age By pediatrics.aappublications.org Published On :: 2013-06-17T01:07:31-07:00 Feeding difficulties often emerge during the neonatal period and affect neonatal growth. Growth throughout the first years of life is associated with children’s IQ scores and risk of behavioral problems.Among infants born full term (≥37 weeks’ gestation) with birth weight ≥2500 g, gain in weight and head circumference during the neonatal period is associated with higher IQ, but not with behavior at 6.5 years of age. (Read the full article) Full Article
pac Health Care Costs Associated With Child Maltreatment: Impact on Medicaid By pediatrics.aappublications.org Published On :: 2013-07-01T00:07:01-07:00 Child maltreatment is a serious and prevalent public health problem in the United States. Responsible for substantial morbidity and mortality, maltreatment affects children's physical and mental health.Although many health impacts of child maltreatment have been documented, no claims-based study has quantified the impact of maltreatment on health service utilization and costs. This study presents systematic claims-based estimates of maltreatment impacts on utilization and costs for the Medicaid population. (Read the full article) Full Article
pac Diaper Need and Its Impact on Child Health By pediatrics.aappublications.org Published On :: 2013-07-29T00:07:09-07:00 Although studies have examined family socioeconomic status as income and educational and employment status, emerging research suggests indicators of material hardship, such as diaper need, are increasingly important to child health. Diaper need has not been examined in the scientific literature.This study quantifies diaper need, proposes a method to measure diaper need, and explores psychosocial and demographic variables associated with diaper need in a large sample of low-income families. (Read the full article) Full Article
pac Impact of a Routine Two-Dose Varicella Vaccination Program on Varicella Epidemiology By pediatrics.aappublications.org Published On :: 2013-10-07T00:07:07-07:00 The 1-dose childhood varicella vaccination program in the United States resulted in dramatic declines in varicella incidence, hospitalizations, and deaths. There is little information on the impact of the 2006 recommendation for 2-dose varicella vaccination of children on varicella epidemiology.In the first 5 years of the 2-dose varicella vaccination program, declines in varicella incidence were seen in all age groups, including infants who are not eligible for varicella vaccination, providing evidence of the benefit of high population immunity. (Read the full article) Full Article
pac Approval and Perceived Impact of Duty Hour Regulations: Survey of Pediatric Program Directors By pediatrics.aappublications.org Published On :: 2013-10-07T00:07:06-07:00 Several studies have been published evaluating the impact of 2011 Accreditation Council for Graduate Medical Education duty hour regulations. Although resident quality of life may be improved, it appears that resident education and patient care may be worse.This is the first study to evaluate pediatric program director approval of 2011 Accreditation Council for Graduate Medical Education Common Program Requirements and the perceived impact of the regulations on patient care, resident education, and quality of life. (Read the full article) Full Article
pac Two-Year Impact of the Alternative Quality Contract on Pediatric Health Care Quality and Spending By pediatrics.aappublications.org Published On :: 2013-12-23T00:06:51-08:00 Payment arrangements that blend global budgets with pay-for-performance are proliferating. However, little is known about how these contracts affect pediatric health care quality and spending for children with and without special health care needs receiving care from large provider organizations.A prototypical global budget contract significantly improved preventive care quality measures tied to pay-for-performance, especially for children with special health care needs. It did not alter trends for spending or for quality measures that were not tied to pay-for-performance. (Read the full article) Full Article
pac Incidence and Impact of CMV Infection in Very Low Birth Weight Infants By pediatrics.aappublications.org Published On :: 2014-02-02T06:31:54-08:00 Congenital cytomegalovirus (CMV) infection is a leading cause of sensorineural hearing loss and neurodevelopmental impairment in full-term infants. The incidence of congenital CMV infection in preterm infants and the possible associations with developmental outcomes are unknown.This study defines the incidence of congenital CMV infection in very low birth weight infants and identifies strong associations of congenital CMV infection with hearing loss and adverse neurodevelopmental outcomes in this population. (Read the full article) Full Article
pac A Pacifier-Activated Music Player With Mother's Voice Improves Oral Feeding in Preterm Infants By pediatrics.aappublications.org Published On :: 2014-02-17T00:07:18-08:00 Preterm infants must develop oral feeding skills before successfully transitioning to home. Pacifier-activated devices playing selected music can improve nonnutritive sucking in preterm infants. A mother’s voice is a positive auditory stimulus for infants.A brief intervention with a pacifier-activated music player using mother’s voice can decrease tube feeding duration without adverse effects on stress or growth. Operant conditioning with positive reinforcement is an effective developmental strategy to improve preterm infants’ feeding skills. (Read the full article) Full Article
pac Strength Capacity and Cardiometabolic Risk Clustering in Adolescents By pediatrics.aappublications.org Published On :: 2014-03-31T00:06:59-07:00 Resistance exercise is known to have a robust effect on glycemic control and cardiometabolic health among children and adolescents, even in the absence of weight loss.Normalized strength capacity is associated with lower cardiometabolic risk clustering in boys and girls, even after adjustment for cardiorespiratory fitness, level of physical activity, and BMI. (Read the full article) Full Article
pac Impact of the FITKids Physical Activity Intervention on Adiposity in Prepubertal Children By pediatrics.aappublications.org Published On :: 2014-03-31T00:06:58-07:00 Physical activity interventions aimed at improving body composition in childhood have had limited success and often targeted overweight children. Therefore, the efficacy of physical activity randomized controlled trials in improving body composition among children with varying adiposity levels remains unknown.This randomized controlled trial demonstrated that a physical activity program designed to meet daily physical activity recommendations can improve cardiorespiratory fitness, decrease total fat mass, and prevent accumulation of central adiposity in a group of children with varying adiposity levels. (Read the full article) Full Article
pac Impact of Vaccination on the Epidemiology of Varicella: 1995-2009 By pediatrics.aappublications.org Published On :: 2014-06-09T00:06:37-07:00 Varicella vaccine is effective, but there is concern that widespread use in young children may lead to a shift in the age of infection, with potentially more severe disease later in childhood and adolescence.This study documents that varicella vaccine resulted in a decline of varicella incidence and hospitalization in all age groups, with no shift to older age groups. (Read the full article) Full Article
pac Impact of Pediatric Exclusivity on Drug Labeling and Demonstrations of Efficacy By pediatrics.aappublications.org Published On :: 2014-07-14T00:07:16-07:00 Most therapeutic products used in children have not been studied in that population. There is a need for special incentives and market protection (pediatric exclusivity) to compensate drug sponsors for studying these products in children.Of 189 products studied under pediatric exclusivity, 173 (92%) received new labeling information. Pediatric efficacy was not established for 78 (42%), including 81% of oncology drugs. Probability of demonstrating efficacy was related to therapeutic area and year exclusivity was granted. (Read the full article) Full Article
pac Impact Locations and Concussion Outcomes in High School Football Player-to-Player Collisions By pediatrics.aappublications.org Published On :: 2014-08-11T00:06:53-07:00 Recent concussion research has examined the role of impact location (ie, the area on the head to which impact occurred); however, no studies exist regarding impact location’s association with concussion outcomes (eg, symptomatology, symptom resolution time, return to play).This study is the first to examine the association of impact location and concussion outcomes in young athletes. Our findings suggest that impact location, as assessed by sideline observers/player report, is likely of little use in predicting clinical outcomes. (Read the full article) Full Article
pac Impact of a Pertussis Epidemic on Infant Vaccination in Washington State By pediatrics.aappublications.org Published On :: 2014-08-18T00:07:00-07:00 It is thought that vaccination coverage increases during and immediately after an infectious disease epidemic; however, little evidence exists to support this phenomenon.The 2011 to 2012 pertussis epidemic did not significantly change the proportion of infants in Washington State who were up to date for pertussis-containing vaccines. This finding may challenge conventional wisdom that vaccine acceptance uniformly increases when risk of disease is high. (Read the full article) Full Article
pac College Health Service Capacity to Support Youth With Chronic Medical Conditions By pediatrics.aappublications.org Published On :: 2014-10-27T00:06:33-07:00 The population of youth with chronic medical conditions is growing and many attend college. Yet we know little about US colleges’ capacity to identify and care for these youth, nor how transition guidelines and financing models should incorporate college health.This is the first study to find that although many colleges can provide some clinical care for youth with chronic conditions, few colleges have systems to identify and track these students, elucidating gaps that pediatricians and institutions need to address. (Read the full article) Full Article
pac Impact of Just-in-Time and Just-in-Place Simulation on Intern Success With Infant Lumbar Puncture By pediatrics.aappublications.org Published On :: 2015-04-13T00:05:20-07:00 Trainee success rates with infant lumbar puncture are poor. The model of just-in-time learning via simulation has produced clinical improvement for other medical skills such as cardiac compressions and central line dressing changes.This is the first study to evaluate the impact of just-in-time-and-place simulation-based learning on success with infant lumbar puncture. The intervention improved clinical behaviors associated with success without making a significant impact on success with the procedure. (Read the full article) Full Article
pac Trends of US Hospitals Distributing Infant Formula Packs to Breastfeeding Mothers, 2007 to 2013 By pediatrics.aappublications.org Published On :: 2015-05-25T00:06:49-07:00 Distribution of infant formula discharge packs to breastfeeding mothers is common practice in maternity care facilities in the United States. Receiving discharge packs is associated with shortened exclusive breastfeeding duration. Many efforts have been made to discourage this practice.From 2007 to 2013, there has been a marked reduction in distribution of discharge packs containing infant formula to breastfeeding mothers in hospitals and birth centers in the United States. (Read the full article) Full Article
pac The Impact of Rudeness on Medical Team Performance: A Randomized Trial By pediatrics.aappublications.org Published On :: 2015-08-10T00:07:44-07:00 Rudeness is routinely experienced by hospital-based medical teams. Individuals exposed to mildly rude behavior perform poorly on cognitive tasks, exhibit reduced creativity and flexibility, and are less helpful and prosocial.Rudeness had adverse consequences on diagnostic and procedural performance of members of the NICU medical teams. Information-sharing mediated the adverse effect of rudeness on diagnostic performance, and help-seeking mediated the effect of rudeness on procedural performance. (Read the full article) Full Article
pac Fin24.com | Mboweni's exceptional business tax measures to combat coronavirus impact By www.fin24.com Published On :: Sun, 29 Mar 2020 17:05:22 +0200 Minister of Finance Tito Mboweni has announced a number of "exceptional tax measures as part of the fiscal package outlined by President Cyril Ramaphosa to fight the coronavirus pandemic. Full Article
pac Bulgarian outreach impacts young lives By feedproxy.google.com Published On :: Fri, 04 Nov 2016 01:57:38 +0000 This year at the sports and English camp in Bulgaria, the team noticed the fruit of building on relationships over time. Full Article
pac Understanding the impacts of unexpected shift to digital learning By news.psu.edu Published On :: Mon, 04 May 2020 12:16 -0400 The unexpected transition to online classes due to the COVID-19 pandemic has prompted many changes for undergraduate students and their instructors. To understand the magnitude of these impacts and potentially improve digital learning, researchers in the Penn State School of Engineering Design and Professional Programs have received a $196,136 grant from the National Science Foundation. Full Article
pac Education in Indian Country: An Education Week Multimedia Package By feedproxy.google.com Published On :: Wed, 04 Dec 2013 00:00:00 +0000 Education Week takes a close look at the obstacles and opportunities for American Indian children in finding success in school and beyond. Full Article Multimedia
pac Cremer group developing sensors to detect coronavirus in enclosed spaces By news.psu.edu Published On :: Tue, 28 Apr 2020 10:06 -0400 Professor of Chemistry Paul Cremer is developing a biosensor platform that could be used to perform real-time, continuous detection of SARS-CoV-2, the virus that causes COVID-19. Full Article
pac Research Center's Leadership Professional-Development Program Had No Impact. Why? By feedproxy.google.com Published On :: Sun, 17 Nov 2019 00:00:00 +0000 A recent study found that one organization's instructional-leadership professional development had no impact. Could it be because the topic of instructional leadership needs to be expanded? Full Article Professionaldevelopment
pac Sony RX100 Buying Guide: Which High-End Compact Camera Is Right for You? By www.pcmag.com Published On :: Sony reinvented the premium point-and-shoot camera in 2012 with the RX100. It's continued to build out the series, but has also kept older models on sale. We're here to help you find the right one to suit your needs. Full Article
pac Impact of KPC-production and high-level meropenem resistance on all-cause mortality of ventilator-associated pneumonia in association with Klebisella pneumoniae [Clinical Therapeutics] By aac.asm.org Published On :: 2020-03-23T08:47:35-07:00 Objectives: Carbapenemase-producing Enterobacterales and specifically KPC-producing Klebsiella pneumoniae (KPC-Kp) are rapidly spreading worldwide. The prognosis of ventilator-associated pneumonia (VAP) caused by KPC-producing Klebsiella pneumoniae (KPC-Kp) is not well known. Our study tries to assess whether ventilator-associated pneumonia caused by a KPC-Kp strain is associated with higher all-cause mortality than if caused by carbapenem-susceptible isolates.Study design and methods: This is a retrospective cohort study of patients with VAP due to K. pneumoniae from a 35-bed polyvalent Intensive Care Unit in a university hospital (> 40,000 annual admissions) between January 2012 and December 2016. Adjusted multivariate analysis was used to study the association of KPC-Kp with 30-day all-cause mortality (Cox regression).Results. We analyze 69 cases of K. pneumoniae VAP of which 39 were produced by a KPC-Kp strain with high-level resistance to meropenem (MIC > 16 mg/mL). All-cause mortality at 30 days was 41% in the KPC-Kp group (16/39) and 33.3% in the carbapenem-susceptible cases (10/30). KPC-Kp etiology was not associated with higher mortality when controlled for confounders (adjusted hazard ratio [lsqb]HR[rsqb] 1.25; 95% CI: 0.46–3.41). Adequate targeted therapy (HR 0.03; 95% CI: <0.01–0.23) was associated with all-cause mortality.Conclussion. Assuming the limitations due to the available sample size, the prognosis of VAP caused by KPC-Kp is similar to VAPs caused by carbapenem-susceptible K. pneumoniae when appropriate treatment is used. Full Article
pac The Impact of Intrinsic Resistance Mechanisms on Potency of QPX7728, a New Ultra-Broad-Spectrum Beta-lactamase Inhibitor of Serine and Metallo Beta-Lactamases in Enterobacteriaceae, Pseudomonas aeruginosa, and Acinetobacter baumannii. [Mechanisms of Resis By aac.asm.org Published On :: 2020-03-30T10:04:32-07:00 QPX7728 is an ultra-broad-spectrum boronic acid beta-lactamase inhibitor that demonstrates inhibition of key serine and metallo beta-lactamases at a nano molar range in biochemical assays with purified enzymes. The broad-spectrum inhibitory activity of QPX7728 observed in biochemical experiments translates into enhancement of the potency of many beta-lactams against strains of target pathogens producing beta-lactamases. The impact of bacterial efflux and permeability on inhibitory potency were determined using isogenic panels of KPC-3 producing isogenic strains of K. pneumoniae and P. aeruginosa and OXA-23-producing strains of A. baumannii with various combinations of efflux and porin mutations. QPX7728 was minimally affected by multi-drug resistance efflux pumps in either Enterobacteriaceae, or in non-fermenters such as P. aeruginosa or A. baumannii. In P. aeruginosa, the potency of QPX7728 was further enhanced when the outer membrane is permeabilized. The potency of QPX7728 in P. aeruginosa is not affected by inactivation of the carbapenem porin OprD. While changes in OmpK36 (but not OmpK35) reduced the potency of QPX7728 (8-16-fold), QPX7728 (4 μg/ml) nevertheless completely reversed KPC-mediated meropenem resistance in strains with porin mutations, consistent with a lesser effect of these mutations on the potency of QPX7728 compared to other agents. The ultra-broad-spectrum beta-lactamase inhibition profile combined with enhancement of the activity of multiple beta-lactam antibiotics with varying sensitivity to the intrinsic resistance mechanisms of efflux and permeability indicate QPX7728 is a useful inhibitor for use with multiple beta-lactam antibiotics. Full Article
pac Population pharmacokinetics of piperacillin following continuous infusion in critically ill patients: Impact of renal function on target attainment [Clinical Therapeutics] By aac.asm.org Published On :: 2020-04-13T08:15:30-07:00 Pharmacokinetic changes are often seen in patients with severe infections. Administration by continuous infusion has been suggested to optimize antibiotic exposure and pharmacokinetic/pharmacodynamic (PK/PD) target attainment for β-lactams. In an observational study, unbound piperacillin concentrations (n=196) were assessed in 78 critically ill patients following continuous infusion of piperacillin/tazobactam (ratio 8:1). The initial dose of 8, 12 or 16 g (piperacillin component) was determined by individual creatinine clearance (CRCL). Piperacillin concentrations were compared to the EUCAST clinical breakpoint MIC for Pseudomonas aeruginosa (16 mg/L), and the following PK/PD targets were evaluated: 100% fT>1xMIC and 100% fT>4xMIC. A population pharmacokinetic model was developed using NONMEM 7.4.3 consisting of a one-compartment disposition model with linear elimination separated into non-renal and renal (linearly increasing with patient CRCL) clearances. Target attainment was predicted and visualized for all individuals based on the utilized CRCL dosing algorithm. The target of 100% fT>1xMIC was achieved for all patients based on the administered dose, but few patients achieved the target of 100% fT>4xMIC. Probability of target attainment for a simulated cohort of patients showed, that increasing the daily dose by 4 g increments (piperacillin component) did not result in substantially improved target attainment for the 100% fT>4xMIC target. To conclude, in patients with high CRCL combined with high-MIC bacterial infections, even a CI regimen with a daily dose of 24 g may be insufficient to achieve therapeutic concentrations. Full Article
pac Impact of vanA-positive Enterococcus faecium exhibiting diverse susceptibility phenotypes to glycopeptides on 30-day mortality of patients with a bloodstream infection [Epidemiology and Surveillance] By aac.asm.org Published On :: 2020-04-27T08:14:57-07:00 Introduction: This study was performed to evaluate the impacts of vanA-positivity of Enterococcus faecium (EFM) exhibiting diverse susceptibility phenotypes to glycopeptides on clinical outcomes in patients with a bloodstream infection (BSI) through a prospective, multicenter, observational study.Methods: A total of 509 patients with an EFM BSI from eight sentinel hospitals in South Korea during a two-year period were enrolled in this study. Risk factors of the hosts and causative EFM isolates were assessed to determine associations with the 30-day mortality of EFM BSI patients via multivariable logistic regression analyses.Results: The vanA gene was detected in 35.2% (179/509) of EFM isolates; 131 EFM isolates exhibited typical VanA phenotypes (group vanA-VanA), while the remaining 48 EFM isolates exhibited atypical phenotypes (group vanA-Atypical), including VanD (n = 43) and vancomycin-variable phenotypes (n = 5). A multivariable logistic regression indicated that vanA-positivity of causative pathogens was independently associated with the increased 30-day mortality rate in the patients with an EFM BSI; however, there was no significant difference in the survival rates between the patients of the vanA-VanA and vanA-Atypical groups (log-rank test, P = 0.904).Conclusions: A high 30-day mortality rate was observed in patients with vanA-positive EFM BSIs, and vanA-positivity of causative EFM was an independent risk factor for early mortality irrespective of the susceptibility phenotypes to glycopeptides; thus, intensified antimicrobial stewardship is needed to improve clinical outcome of patients with vanA-positive EFM BSI. Full Article
pac In vitro and in vivo antibiotic capacity of two host defence peptides [Mechanisms of Action] By aac.asm.org Published On :: 2020-05-04T08:49:24-07:00 Two non-amidated host defence peptides named Pin2[G] and FA1 were evaluated against three types of pathogenic bacteria; two isolated from diabetic foot ulcer patients, Staphylococcus aureus UPD13 and Pseudomonas aeruginosa UPD3, and another from a commercial collection, Salmonella enterica serovar Typhimurium (ATCC 14028). In vitro experiments showed that the antimicrobial performance of the synthetic peptides, Pin2[G] and FA1, was modest, although FA1 was more effective than Pin2[G]. In contrast Pin2[G] had superior in vivo anti-infective activity to FA1 in rabbit wound infections by the diabetic foot ulcer pathogens S. aureus UPD13 and P. aeruginosa UPD3. Indeed, Pin2[G] reduced bacterial colony counts of both S. aureus UPD13 and P. aeruginosa UPD3 by >100,000-fold after 48-72 h on skin wounds of infected rabbits, while in similar infected wounds, FA1 had no major effects at 72-96 h of treatment. Ceftriaxone was equally effective vs. Pseudomonas but less effective vs. S. aureus infections. Additionally, the two peptides were evaluated in mice against intragastrically inoculated S. enterica ser. Typhimurium (ATCC 14028). Only Pin2[G], at 0.56 mg/kg, was effective in reducing systemic (liver) infection by >67-fold, equivalent to the effect of treatment with levofloxacin. Pin2[G] showed superior immunomodulatory activity in increasing chemokine production by a human bronchial cell line and suppressing poly(IC)-induced pro-inflammatory IL6 production. These data showed that the in vitro antimicrobial activity of these peptides was not correlated with their in vivo anti-infective activity, and suggest that other factors such as immunomodulatory activity were more important. Full Article
pac Fin24.com | Gold bars fight coronavirus kits for space on the plane By www.fin24.com Published On :: Sun, 03 May 2020 12:27:11 +0200 Swiss refiner Valcambi SA tried for five straight days last month to move a shipment of gold out of Hong Kong. Twice the metal was packed carefully onto a plane, only to be offloaded again. Full Article
pac Technology Has No Impact on Teaching and Learning By feedproxy.google.com Published On :: Wed, 24 Apr 2019 00:00:00 +0000 If we truly want educational technology to take root in schools and finally live up to the promise we've been expecting for more than a decade, schools need to develop a cadre of well-trained tech instructional coaches. Full Article Technology