Pediatrics Commons^™

Oral Morphine Versus Ibuprofen Administered At Home For Postoperative Orthopedic Pain In Children: A Randomized Controlled Trial, Naveen Poonai, Natasha Datoo, Samina Ali, Megan Cashin, Amy L Drendel, Rongbo Zhu, Natasha Lepore, Michael Greff, Michael Rieder, Debra Bartley

Paediatrics Publications

BACKGROUND: Oral morphine for postoperative pain after minor pediatric surgery, while increasingly popular, is not supported by evidence. We evaluated whether oral morphine was superior to ibuprofen for at-home management of children's postoperative pain.

METHODS: We conducted a randomized superiority trial comparing oral morphine (0.5 mg/kg) with ibuprofen (10 mg/kg) in children 5 to 17 years of age who had undergone minor outpatient orthopedic surgery (June 2013 to September 2016). Participants took up to 8 doses of the intervention drug every 6 hours as needed for pain at home. The primary outcome was pain, according to the Faces Pain Scale …

Adversity And Academic Performance Among Adolescent Youth: A Community-Based Participatory Research Study, Sukhdip Purewal Boparai, Tiffani Marie, Eduardo Aguayo, Jordan Brooks, Estefany Juarez, Sheana Soriano, Alasia Waters, Jaquez Donaldson, Joseph Reagans, Gracee Anguiano, Allison Ipsen

Journal of Adolescent and Family Health

Researchers and youth stakeholders devised a survey on 27 adversities based on youth expertise, clinical practice, and adversity literature. The aim of the study was to understand the prevalence of individual and cumulative adversities, and association of adversities to age, gender, race/ethnicity and academic performance among a community sample of urban high school students. All participants experienced two or more adversities and experienced greater overall adversity than youth in population-based studies. Youth-proposed stressors were among the most prevalent, and females, older youth, and African American youth reported disproportionately greater number of adversities. Specific types of adversities were endorsed differentially based …

Targeting Cysteine Thiols For In Vitro Site-Specific Glycosylation Of Recombinant Proteins, Yoo Jung Choi, Jinhui Zhu, Steve Chung, Naveed Siddiqui, Qingping Feng, Peter B. Stathopulos

Paediatrics Publications

Stromal interaction molecule-1 (STIM1) is a type-I transmembrane protein located on the endoplasmic reticulum (ER) and plasma membranes (PM). ER-resident STIM1 regulates the activity of PM Orai1 channels in a process known as store operated calcium (Ca2+) entry which is the principal Ca2+ signaling process that drives the immune response. STIM1 undergoes post-translational N-glycosylation at two luminal Asn sites within the Ca2+ sensing domain of the molecule. However, the biochemical, biophysical, and structure biological effects of N-glycosylated STIM1 were poorly understood until recently due to an inability to readily obtain high levels of homogeneous N-glycosylated protein. Here, we describe the …

Rate Of Detection Of Multiple Organisms And Clostridium Difficile With Stool Multiplex Pcr Detection Test In Pediatrics (Poster)., Saisho Mangla Do, Tibisay Villalobos Md

Department of Pediatrics

No abstract provided.

Scaffolding Proteins In The Development And Maintenance Of The Epidermal Permeability Barrier, Melissa Crawford, Lina Dagnino

Paediatrics Publications

The skin of mammals and other terrestrial vertebrates protects the organism against the external environment, preventing heat, water and electrolyte loss, as well as entry of chemicals and pathogens. Impairments in the epidermal permeability barrier function are associated with the genesis and/or progression of a variety of pathological conditions, including genetic inflammatory diseases, microbial and viral infections, and photodamage induced by UV radiation. In mammals, the outside-in epidermal permeability barrier is provided by the joint action of the outermost cornified layer, together with assembled tight junctions in granular keratinocytes found in the layers underneath. Tight junctions serve as both outside-in …

Predicting Unplanned Transfers To The Intensive Care Unit: A Machine Learning Approach Leveraging Diverse Clinical Elements, Ben Wellner, Joan Grand, Elizabeth Canzone, Matt Coarr, Patrick Brady, Nathan Dean, +Additional Authors

Pediatrics Faculty Publications

Background: Early warning scores aid in the detection of pediatric clinical deteriorations but include limited data inputs, rarely include data trends over time, and have limited validation.

Objective: Machine learning methods that make use of large numbers of predictor variables are now commonplace. This work examines how different types of predictor variables derived from the electronic health record affect the performance of predicting unplanned transfers to the intensive care unit (ICU) at three large children’s hospitals.

Methods: We trained separate models with data from three different institutions from 2011 through 2013 and evaluated models with 2014 data. Cases consisted of …

Mutations In Keops-Complex Genes Cause Nephrotic Syndrome With Primary Microcephaly, Daniela A Braun, Jia Rao, Geraldine Mollet, David Schapiro, Marie-Claire Daugeron, Weizhen Tan, Olivier Gribouval, Olivia Boyer, Patrick Revy, Tilman Jobst-Schwan, Johanna Magdalena Schmidt, Jennifer A Lawson, Denny Schanze, Shazia Ashraf, Jeremy F P Ullmann, Charlotte A Hoogstraten, Nathalie Boddaert, Bruno Collinet, Gaëlle Martin, Dominique Liger, Svjetlana Lovric, Monica Furlano, I Chiara Guerrera, Oraly Sanchez-Ferras, Jennifer F Hu, Anne-Claire Boschat, Sylvia Sanquer, Björn Menten, Sarah Vergult, Nina De Rocker, Merlin Airik, Tobias Hermle, Shirlee Shril, Eugen Widmeier, Heon Yung Gee, Won-Il Choi, Carolin E Sadowski, Werner L Pabst, Jillian K Warejko, Ankana Daga, Tamara Basta, Verena Matejas, Karin Scharmann, Sandra D Kienast, Babak Behnam, Brendan Beeson, Amber Begtrup, Malcolm Bruce, Gaik-Siew Ch'ng, Shuan-Pei Lin, Jui-Hsing Chang, Chao-Huei Chen, Megan T Cho, Patrick M Gaffney, Patrick E Gipson, Chyong-Hsin Hsu, Jameela A Kari, Yu-Yuan Ke, Cathy Kiraly-Borri, Wai-Ming Lai, Emmanuelle Lemyre, Rebecca Okashah Littlejohn, Amira Masri, Mastaneh Moghtaderi, Kazuyuki Nakamura, Fatih Ozaltin, Marleen Praet, Chitra Prasad, Agnieszka Prytula, Elizabeth R Roeder, Patrick Rump, Rhonda E Schnur, Takashi Shiihara, Manish D Sinha, Neveen A Soliman, Kenza Soulami, David A Sweetser, Wen-Hui Tsai, Jeng-Daw Tsai, Rezan Topaloglu, Udo Vester, David H Viskochil, Nithiwat Vatanavicharn, Jessica L Waxler, Klaas J Wierenga, Matthias T F Wolf, Sik-Nin Wong, Sebastian A Leidel, Gessica Truglio, Peter C Dedon, Annapurna Poduri, Shrikant Mane, Richard P Lifton, Maxime Bouchard, Peter Kannu, David Chitayat, Daniella Magen, Bert Callewaert, Herman Van Tilbeurgh, Martin Zenker, Corinne Antignac, Friedhelm Hildebrandt

Paediatrics Publications

Galloway-Mowat syndrome (GAMOS) is an autosomal-recessive disease characterized by the combination of early-onset nephrotic syndrome (SRNS) and microcephaly with brain anomalies. Here we identified recessive mutations in OSGEP, TP53RK, TPRKB, and LAGE3, genes encoding the four subunits of the KEOPS complex, in 37 individuals from 32 families with GAMOS. CRISPR-Cas9 knockout in zebrafish and mice recapitulated the human phenotype of primary microcephaly and resulted in early lethality. Knockdown of OSGEP, TP53RK, or TPRKB inhibited cell proliferation, which human mutations did not rescue. Furthermore, knockdown of these genes impaired protein translation, caused endoplasmic reticulum stress, activated DNA-damage-response signaling, and ultimately induced …

Virus-Specific T Cells For The Immunocompromised Patient, A. Houghtelin, Catherine M. Bollard

Pediatrics Faculty Publications

While progress has been made in the treatment of both hematologic cancers and solid tumors, chemorefractory or relapsed disease often portends a dismal prognosis, and salvage chemotherapy or radiation expose patients to intolerable toxicities and may not be effective. Hematopoietic stem cell transplant offers the promise of cure for many patients, and while mismatched, unrelated or haploidentical donors are increasingly available, the recipients are at higher risk of severe immunosuppression and immune dysregulation due to graft versus host disease. Viral infections remain a primary cause of severe morbidity and mortality in this patient population. Again, many therapeutic options for viral …

When The Health System Fails You: Maternal Care Under Kenya’S 2017 Nurses' Strike, Tessa Coughtrey-Davenport

Independent Study Project (ISP) Collection

This study focuses on the 2017 nurses’ strike and how the crippling of the public health system impacted maternal care in Kisumu, Kenya. Kenya has one of the highest maternal mortality ratios in the world, and there have been many efforts to reduce this, such as delivery with a Skilled Birth Attendant and attending antenatal care visits, all of which are centered around a functioning health system. The research team used a combination of interviews with key populations and analysis of service delivery data at local health centers to evaluate the effects of the strike on maternal care. The study …

Secondhand Smoke Exposure And Preclinical Markers Of Cardiovascular Risk In Toddlers, Judith A Groner, Hong Huang, Mandar S. Joshi, Nicholas Eastman, Lisa Nicholson, John Anthony Bauer

Pediatrics Faculty Publications

Objective: Links between secondhand smoke (SHS) exposure and cardiovascular disease in adults are well established but seldom reported during childhood. Although rates of smoking have decreased, young children from low-income backgrounds remain likely to be exposed to SHS. The purpose of this study was to investigate relationships between SHS exposure in young children and several preclinical markers of cardiovascular risk that have been established as relevant to adult populations.

Methods: 139 children, 2–5 years of age, were enrolled in a cross-sectional study. SHS exposure was objectively determined by hair nicotine level; a comprehensive panel of clinical markers (AM blood pressure, …

Frequency And Outcome Of Acute Neurologic Complications After Congenital Heart Disease Surgery, Sidra Kaleem Jafri, Lubaina Ehsan, Qalab Abbas, Fatima Ali, Prem Chand, Anwarul Haque

Department of Paediatrics and Child Health

Objectives: To determine the frequency and immediate outcome of acute neurologic complications (ANCs) in children undergoing congenital heart surgery (CHS).
Materials and Methods: Inthis retrospective study, all patients undergoing CHS at our hospital from January 2007 to June 2016 were included. Patients were followed up for the development of seizures, altered level of consciousness (ALOC), abnormal movements, and stroke. Results are presented as mean with standard deviation and frequency with percentages.
Results: Of 2000 patients who underwent CHS at our center during the study, 35 patients (1.75%) developed ANC. Seizures occurred in 28 (80%), ALOC in 5 (14%), clinical stroke …

Evaluation Of Mothers And Infants With Presumed Exposure To Zika Virus: A Look Into The Lehigh Valley Experience, Tibisay Villalobos Md, Michelle Maron Rn, Jeanette Taveras Do

Department of Pediatrics

No abstract provided.

Measuring Home Environments Across Cultures: Invariance Of The Home Scale Across Eight International Sites From The Mal-Ed Study, Paul C. Jones, Laura L. Pendergast, Barbara A. Schaefer, Muneera Rasheed, Erling Svensen, Rebecca Scharf, Rita Shrestha, Angelina Maphula, Reeba Roshan, Zeba Rasmussen

Department of Paediatrics and Child Health

The home environment provides the context for much of a child's early development. Examples of important aspects of the home environment include safety, cleanliness, and opportunities for cognitive stimulation. This study sought to examine the psychometric properties of an adapted form of the Home Observation for the Measurement of the Environment (HOME; Caldwell & Bradley, 1984, 2003) across the eight international sites of the MAL-ED project (Dhaka, Bangladesh; Vellore, India; Bhakatapur, Nepal; Naushahro Feroze, Pakistan; Fortaleza, Brazil; Loreto, Peru; Venda, South Africa; Haydom, Tanzania), to identify a factor structure that fit the data at all sites, and to derive a …

Transfusion-Related Acute Lung Injury In A Paediatric Intensive Care Unit Of Pakistan, Muhammed Tariq, Zehra Dhanani, Qalab Abbas, Humaira Jurair, Farheen Karim Mahar, Anwarul Haque

Department of Paediatrics and Child Health

Background: Transfusion-Related Acute Lung Injury (TRALI) is a major cause of transfusionrelated morbidity and mortality in the intensive care unit setting. There is a paucity of such data from Pakistan. The purpose of this study is to assess the incidence and outcome of TRALI in critically ill children admitted in a pediatric intensive care unit (PICU) of Pakistan.
Methods: This is a retrospective cohort study of all critically ill or injured children who developed TRALI or "possible" TRALI after blood transfusion based on Canadian Conference Consensus criteria in a closed multidisciplinary-cardiothoracic PICU from January 2012 to June 2016. The demographic, …

Global Respiratory Syncytial Virus-Associated Mortality In Young Children (Rsv Gold): A Retrospective Case Series, Nienke M. Scheltema, Angela Gentile, Florencia Lucion, D James Nokes, Patrick K. Munywoki, Shabir A. Madhi, Michelle J. Groome, Cheryl Cohen, Jocelyn Moyes, Syed Asad Ali

Department of Paediatrics and Child Health

Background: Respiratory syncytial virus (RSV) infection is an important cause of pneumonia mortality in young children. However, clinical data for fatal RSV infection are scarce. We aimed to identify clinical and socioeconomic characteristics of children aged younger than 5 years with RSV-related mortality using individual patient data.

Methods: In this retrospective case series, we developed an online questionnaire to obtain individual patient data for clinical and socioeconomic characteristics of children aged younger than 5 years who died with community-acquired RSV infection between Jan 1, 1995, and Oct 31, 2015, through leading research groups for child pneumonia identified through a comprehensive …

Teaching Basic Pediatric Intensive Care Course To Pediatric Residents And Consultants, Humaira Jurair, Qalab Abbas, Anwar Ul Haque

Department of Paediatrics and Child Health

No abstract provided.

Oral Sildenafil Use In Neonates With Persistent Pulmonary Hypertension Of Newborn, Ali Shabbir Hussain, Syed Rehan Ali, Shakeel Ahmed, Farah Naz Qamar, Anila Haroon

Department of Paediatrics and Child Health

Background: The prevalence of PPHN has been estimated at 1.9 per 1000 live births. After the discovery of iNO's, its efficacy and benefit in PPHN is well established. Even in the best of centers equipped with iNo and ECMO the mortality is around 20%. Also, iNO is expensive and difficult to administer and monitor which makes it difficult choice in our part of the world. Furthermore About 40% of patients do not respond or have rebound pulmonary hypertension after discontinuation. Owing to these reasons, other treatment modalities like phosphodiesterase inhibitors such as Sildenafil need to be evaluated.
Methods: We report …

Simplification Of The Finnegan Neonatal Abstinence Scoring System: Retrospective Study Of Two Institutions In The Usa, Enrique Gomez Pomar, Loretta P. Finnegan, Lori Delvin, Henrietta S. Bada, Vanessa A. Concina, Katrina T. Ibonia, Philip M. Westgate

Pediatrics Faculty Publications

Objective To develop a simplified Finnegan Neonatal Abstinence Scoring System (sFNAS) that will highly correlate with scores ≥ 8 and ≥12 in infants being assessed with the FNAS.

Design, setting and participants This is a retrospective analysis involving 367 patients admitted to two level IV neonatal intensive care units with a total of 40 294 observations. Inclusion criteria included neonates with gestational age ≥ 37 0/7 weeks, who are being assessed for neonatal abstinence syndrome (NAS) using the FNAS. Infants with a gestational age < 37 weeks were excluded.

Methods A linear regression model based on the original FNAS data from one institution was developed …

Randomised Controlled Trial Of Lactobacillus Rhamnosus (Lgg) Versus Placebo In Children Presenting To The Emergency Department With Acute Gastroenteritis: The Pecarn Probiotic Study Protocol., David Schnadower, Phillip I Tarr, Casper T Charles, Marc H Gorelick, Michael J Dean, Karen J O'Connell, Prashant Mahajan, Thomas H Chun, Seema R Bhatt, Cindy G Roskind, Elizabeth C Powell, Alexander J Rogers, Cheryl Vance, Robert E Sapien, Feng Gao, Stephen B Freedman

Pediatrics Faculty Publications

INTRODUCTION: Acute gastroenteritis (AGE) is a common and burdensome condition that affects millions of children worldwide each year. Currently available strategies are limited to symptomatic management, treatment and prevention of dehydration and infection control; no disease-modifying interventions exist. Probiotics, defined as live microorganisms beneficial to the host, have shown promise in improving AGE outcomes, but existing studies have sufficient limitations such that the use of probiotics cannot currently be recommended with confidence. Here we present the methods of a large, rigorous, randomised, double-blind placebo-controlled study to assess the effectiveness and side effect profile of Lactobacillus rhamnosus GG (LGG) (ATCC 53103) …

Judging The Neonatal Abstinence Syndrome Assessment Tools To Guide Future Tool Development: The Use Of Clinimetrics As Opposed To Psychometrics, Philip M. Westgate, Enrique Gomez-Pomar

Biostatistics Faculty Publications

In the face of the current Neonatal Abstinence Syndrome (NAS) epidemic, there is considerable variability in the assessment and management of infants with NAS. In this manuscript, we particularly focus on NAS assessment, with special attention given to the popular Finnegan Neonatal Abstinence Score (FNAS). A major instigator of the problem of variable practices is that multiple modified versions of the FNAS exist and continue to be proposed, including shortened versions. Furthermore, the validity of such assessment tools has been questioned, and as a result, the need for better tools has been suggested. The ultimate purpose of this manuscript, therefore, …

A Protocol For Quality Improvement Programme To Reduce Central Line-Associated Bloodstream Infections In Nicu Of Low And Middle Income Country, Ali Shabbir Hussain, Syed Rehan Ali, Shabina Ariff, Saba Arbab, Simon Demas, Jehan Zeb, Arjumand Rizvi

Department of Paediatrics and Child Health

Introduction: Central line-associated bloodstream infections (CLABSI) are the most important cause of morbidity and mortality in critically ill patients. Evidence-based interventions when used in form of a bundle have proven to decrease CLABSI. Our unit has a high CLABSI rate (9/1000 central line days). Therefore, we intend to introduce evidence-based CLABSI prevention package in our practice to improve CLABSI rates in our NICU within limited resources.
Methods and Analysis: The study will be conducted using preanalysis and postanalysis design from January 2016 to December 2017. It is going to be conducted in three phases with phase I being the preimplimentation …

Global, Regional, And National Comparative Risk Assessment Of 84 Behavioural, Environmental And Occupational, And Metabolic Risks Or Clusters Of Risks, 1990-2016: A Systematic Analysis For The Global Burden Of Disease Study 2016, Gbd 2016 Risk Factors Collaborators

Paediatrics Publications

BACKGROUND: The Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016) provides a comprehensive assessment of risk factor exposure and attributable burden of disease. By providing estimates over a long time series, this study can monitor risk exposure trends critical to health surveillance and inform policy debates on the importance of addressing risks in context.

METHODS: We used the comparative risk assessment framework developed for previous iterations of GBD to estimate levels and trends in exposure, attributable deaths, and attributable disability-adjusted life-years (DALYs), by age group, sex, year, and location for 84 behavioural, environmental and occupational, and …

Global, Regional, And National Disability-Adjusted Life-Years (Dalys) For 333 Diseases And Injuries And Healthy Life Expectancy (Hale) For 195 Countries And Territories, 1990-2016: A Systematic Analysis For The Global Burden Of Disease Study 2016, Gbd 2016 Dalys And Hale Collaborators

Paediatrics Publications

BACKGROUND: Measurement of changes in health across locations is useful to compare and contrast changing epidemiological patterns against health system performance and identify specific needs for resource allocation in research, policy development, and programme decision making. Using the Global Burden of Diseases, Injuries, and Risk Factors Study 2016, we drew from two widely used summary measures to monitor such changes in population health: disability-adjusted life-years (DALYs) and healthy life expectancy (HALE). We used these measures to track trends and benchmark progress compared with expected trends on the basis of the Socio-demographic Index (SDI).

METHODS: We used results from the Global …

Global, Regional, And National Incidence, Prevalence, And Years Lived With Disability For 328 Diseases And Injuries For 195 Countries, 1990-2016: A Systematic Analysis For The Global Burden Of Disease Study 2016, Gbd 2016 Disease And Injury Incidence And Prevalence Collaborators

Paediatrics Publications

BACKGROUND: As mortality rates decline, life expectancy increases, and populations age, non-fatal outcomes of diseases and injuries are becoming a larger component of the global burden of disease. The Global Burden of Diseases, Injuries, and Risk Factors Study 2016 (GBD 2016) provides a comprehensive assessment of prevalence, incidence, and years lived with disability (YLDs) for 328 causes in 195 countries and territories from 1990 to 2016.

METHODS: We estimated prevalence and incidence for 328 diseases and injuries and 2982 sequelae, their non-fatal consequences. We used DisMod-MR 2.1, a Bayesian meta-regression tool, as the main method of estimation, ensuring consistency between …

Insulin-Like Growth Factor Binding Protein-6 Alters Skeletal Muscle Differentiation Of Human Mesenchymal Stem Cells, Doaa Aboalola, Victor K. M. Han

Paediatrics Publications

Insulin-like growth factor binding protein-6 (IGFBP-6), the main regulator of insulin-like growth factor-2 (IGF-2), is a component of the stem cell niche in developing muscle cells. However, its role in muscle development has not been clearly defined. In this study, we investigated the role of IGFBP-6 in muscle commitment and differentiation of human mesenchymal stem cells derived from the placenta. We showed that placental mesenchymal stem cells (PMSCs) have the ability to differentiate into muscle cells when exposed to a specific culture medium by expressing muscle markers Pax3/7, MyoD, myogenin, and myosin heavy chain in a stage-dependent manner with the …

Procalcitonin: The Pros And Cons In Pediatrics, Kris Rooney Md

Department of Pediatrics

No abstract provided.

Conditional Random Slope: A New Approach For Estimating Individual Child Growth Velocity In Epidemiological Research, Michael Leung, Diego G. Bassani, Amy Racine‐Poon, Anna Goldenberg, Syed Asad Ali, Gagandeep Kang, Prasanna S. Premkumar, Daniel E. Roth

Department of Paediatrics and Child Health

Objectives: Conditioning child growth measures on baseline accounts for regression to the mean (RTM). Here, we present the “conditional random slope” (CRS) model, based on a linear-mixed effects model that incorporates a baseline-time interaction term that can accommodate multiple data points for a child while also directly accounting for RTM.
Methods: In two birth cohorts, we applied five approaches to estimate child growth velocities from 0 to 12 months to assess the effect of increasing data density (number of measures per child) on the magnitude of RTM of unconditional estimates, and the correlation and concordance between the CRS and four …

Radiation-Free Cmr Diagnostic Heart Catheterization In Children., Kanishka Ratnayaka, Joshua P Kanter, Anthony Z Faranesh, Elena K Grant, Laura J Olivieri, Russell R Cross, Ileen F Cronin, Karin S Hamann, Adrienne E Campbell-Washburn, Kendall J O'Brien, Toby Rogers, Michael S Hansen, Robert J Lederman

Pediatrics Faculty Publications

BACKGROUND: Children with heart disease may require repeated X-Ray cardiac catheterization procedures, are more radiosensitive, and more likely to survive to experience oncologic risks of medical radiation. Cardiovascular magnetic resonance (CMR) is radiation-free and offers information about structure, function, and perfusion but not hemodynamics. We intend to perform complete radiation-free diagnostic right heart catheterization entirely using CMR fluoroscopy guidance in an unselected cohort of pediatric patients; we report the feasibility and safety.

METHODS: We performed 50 CMR fluoroscopy guided comprehensive transfemoral right heart catheterizations in 39 pediatric (12.7 ± 4.7 years) subjects referred for clinically indicated cardiac catheterization. CMR guided …

Long-Term Impact Of Changing Childhood Malnutrition On Rotavirus Diarrhoea: Two Decades Of Adjusted Association With Climate And Socio-Demographic Factors From Urban Bangladesh, Sumon Kumar Das, Mohammod Jobayer Chisti, Mohammad Habibur Rahman Sarker, Jui Das, Shawnawaz Ahmed, K. M. Shahunja, Shamsun Nahar, Nora Gibbons, Tahmeed Ahmed, Abu Syed Golam Faruque, Mustafizur Rahman, George J. Fuchs Iii, Abdullah Al Mamun, Peter John Baker

Pediatrics Faculty Publications

Background

There is strong association between childhood rotavirus, diarrhoea, climate factors and malnutrition. Conversely, a significant nutritional transition (reduced under-nutrition) with a concurrent increasing trend of rotavirus infection in last decade was also observed among under 5 children, especially in developing countries including Bangladesh. Considering the pathophysiology of rotavirus, there might be an interaction of this nutrition transition which plays a pivotal role in increasing rotavirus infection in addition to climate and other man-made factors in urban areas such as Dhaka, Bangladesh.

Methods

Relevant monthly data from 1993–2012 were extracted from the archive of the Diarrhoeal Disease Surveillance System of …

Regulation Of Osteogenic Differentiation Of Placental-Derived Mesenchymal Stem Cells By Insulin-Like Growth Factors And Low Oxygen Tension, Amer Youssef, Victor K. M. Han

Paediatrics Publications

Placental mesenchymal stem cells (PMSCs) are multipotent cells that can differentiate in vitro to multiple lineages, including bone. Insulin-like growth factors (IGFs, IGF-1 and IGF-2) participate in maintaining growth, survival, and differentiation of many stem cells, including osteoprogenitors. Low oxygen tension (PO2) can maintain stem cell multipotency and impede osteogenic differentiation. In this study, we investigated whether PMSC osteogenic differentiation is influenced by low PO2 and by IGFs. Our results indicated that low PO2 decreased osteogenic markers RUNX2 and OPN; however, re-exposure to higher oxygen tension (room air) restored differentiation. IGFs, especially IGF-1, triggered an earlier expression of RUNX2 and …