Tag Archive for: Basu

Representative OFF and DIFF spectra

GABA and glutamate in the preterm neonatal brain

Preterm and sick newborns are at high risk of brain injury that can lead to cognitive delays and behavioral disorders including autism and ADHD. Gamma-aminobutyric acid (GABA) and glutamate system disruptions may underlie these neonatal brain injuries and hence it is important to describe their normative profile in the developing neonatal brain.

In a study led by Sudeepta Basu, M.D., neonatologist at Children’s National Hospital and Assistant Professor of Pediatrics at George Washington University School of Medicine and Health Sciences, specialized GABA editing spectroscopy (MEGA-PRESS) was acquired on a 3Tesla MRI scanner. Although MEGA-PRESS has been used in older subjects, there are challenges in the newborn population that have limited investigations with only a few institutions worldwide. Under the leadership of Catherine Limperopoulos, Ph.D., in the Developing Brain Institute (DBI) at Children’s National, a team of scientists (in particular, Dr. Subechhya Pradhan) have diligently overcome the technical challenges to enable use of this cutting-edge technology for research at the institute.

With this unique capability, Dr. Basu’s team prospectively enrolled 58 healthy newborns to describe the normal GABA and glutamate concentrations in different regions of the developing brain. In a recent article published in the American Journal of Neuroradiology, Dr. Basu reports that GABA and glutamate concentrations were highest in the cerebellum, slightly lower in the basal ganglia, but significantly lower in the frontal lobe.

“Our ability to reliably describe the normal metabolic-neurotransmitter milieu of the developing newborn brain is the first step in filling a critical gap in knowledge,” says Dr. Basu. “We hope to identify early bio-markers of brain injury of cognitive delays and autism and ADHD risk which remains a major challenge until clinical symptoms manifest later in childhood.”

Under the direction of Dr. Limperopoulos, advanced multi-modal high precision MRI protocols have been developed for use in research studies at Children’s National that allows the scientists to identify subtle signs of delayed growth and development of the newborn brain. With the optimization of MEGA-PRESS for newborns, Children’s National is one of a few institutions worldwide capable of investigating the newborn brain neurotransmitters in future research studies.

Read the full article in American Journal of Neuroradiology.

Representative OFF and DIFF spectra

Representative OFF and DIFF spectra.

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Children’s National participants share their expertise at PAS meeting

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The 2021 Pediatric Academic Societies (PAS) Virtual meeting hosted live-streamed events, on-demand sessions with live Q+A, a virtual exhibit hall, poster presentations and networking events that attracted pediatricians and healthcare providers worldwide. Among the physician-scientists, there were over 20 Children’s National Hospital-affiliated participants at this year’s meeting, adding to the conversation of pediatric research in specialty and sub-specialty areas.

Children’s National experts covered a range of topics, including heart disease, neurology, abnormal glycemia in newborns and antibiotic use in hospitalized children.

The “Neurological Implications of Abnormal Glycemia in Neonatal Encephalopathy and Prematurity” was a hot topic symposium presented by a panel of experts, including Sudeepta Basu, M.B.B.S., M.S., neonatologist at Children’s National.

The experts addressed the importance of recognizing early blood glucose disturbances in newborns with encephalopathy following birth asphyxia and its likely impact on brain injury and long-term outcomes. Although whole body cooling for newborns with encephalopathy after birth asphyxia is now standard of care in most advanced centers like Children’s National, many newborns still die or have neurological impairments. Dr. Basu emphasized on the need of continued advances in newer therapies and optimizing intensive care support for these vulnerable newborns immediately after birth. Dr. Basu’s presentation focused on the association of not only low blood glucose (hypoglycemia) but also high blood glucose (hyperglycemia) with abnormal motor, visual and intellectual outcomes in surviving newborns.

“Recognizing the problem is the first step for further advancement,” Dr. Basu said. “The scientific community needs to recognize the importance of early glucose status as an early marker for disease severity and risk of brain injury.” To sum up, Dr. Basu drew attention to recent newborn resuscitation guidelines from the International Liaison Committee on Resuscitation (ILCOR), which recommends close monitoring of blood glucose levels and optimizing supportive care to maintain it within normal range. Dedicated clinical trials are the need of the hour to guide what are “normal” glucose levels in newborns with encephalopathy and what treatment options are most beneficial.

Rana F. Hamdy, M.D., M.P.H., M.S.C.E., director of the Children’s National Antimicrobial Stewardship Program, delved into the increased number of children receiving care for acute conditions – like acute respiratory tract infections – from urgent care centers and direct-to-consumer (DTC) telemedicine companies during her session “Implementing Antibiotic Stewardship in Telemedicine and Urgent Care Settings.”

Telemedicine, in this case, refers to DTC telemedicine companies—not to be confused with the telemedicine established with primary care providers, like the services provided by Children’s National.

There has been little research focused on promoting good antibiotic stewardship in urgent care settings that tend to overprescribe antibiotics compared to a primary care setting. In addition to her work focusing on improving antimicrobial use within Children’s National, Dr. Hamdy has led collaborative quality improvement work nationally in both the pediatric urgent care and DTC telemedicine settings.

“What we’ve learned from our work with the DTC telemedicine setting is that leadership commitment coming from the company is a necessary core element,” Dr. Hamdy said. “There may be unique opportunities in the telemedicine setting to employ the home-grown computer systems for antimicrobial stewardship interventions, for example, incorporating clinical decision support or feedback reports into the electronic health record systems or displaying a commitment letter in the virtual waiting room.”

In the urgent care setting, Dr. Hamdy’s team recruited approximately 150 pediatric urgent care providers to participate in the national quality improvement initiative. Communication training modules for pediatric urgent care providers with scripted language for target infectious conditions — acute otitis media, pharyngitis and otitis media with effusion — were among the successful intervention approaches that led to improved appropriate antibiotic prescribing practices, according to her team’s findings.

“Understanding the prescribing practices in the urgent care setting is important to knowing where and how to focus on target conditions and to be able to support with education and resources,” Dr. Hamdy said. “And understanding the perceived barriers to judicious antibiotic prescribing can help to identify the highest yield interventions.”

This also reflects the approach taken by the outpatient antibiotic stewardship team at the Children’s National Goldberg Center, led by Ariella Slovin, M.D., primary care pediatrics provider at Children’s National Hospital. Dr. Slovin’s oral abstract entitled “Antibiotic Prescribing Via Telemedicine in the Time of COVID-19,” examined the effect that a shift to telemedicine due to the COVID-19 pandemic had on antibiotic use for acute respiratory tract infections. Overall, her team found a decrease in the proportion of acute respiratory tract infections prescribed antibiotics and concluded that the shift to telemedicine did not adversely affect judicious antibiotic prescribing for acute respiratory tract infections.

Other participants from Children’s National included: Taeun Chang, M.D.; Yuan-Chiao Lu, Ph.D.; Chidiogo Anyigbo, M.D., M.P.H.; Panagiotis Kratimenos, M.D.; Sudeepta Basu, M.B.B.S., M.S.; Ashraf Harahsheh, M.D., F.A.C.C., F.A.A.P.; Rana F. Hamdy, M.D., M.P.H., M.S.C.E.; John Idso, M.D.; Michael Shoykhet, M.D., Ph.D.; Monika Goyal, M.D.; Ioannis Koutroulis, M.D., Ph.D., M.B.A.; Josepheen De Asis-Cruz, M.D., Ph.D.; Asad Bandealy, M.D., M.P.H.; Priti Bhansali, M.D.; Sabah Iqbal, M.D.; Kavita Parikh, M.D.; Shilpa Patel, M.D.; Cara Lichtenstein, M.D.

To view the PAS phase I mini session list and the various areas of expertise at Children’s National, visit: https://innovationdistrict.childrensnational.org/childrens-national-hospital-at-the-2021-pediatric-academic-societies-meeting/

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Children’s National Hospital at the 2021 Pediatric Academic Societies Meeting

Attending the 2021 Pediatric Academic Societies meeting this week? There will be over 20 Children’s National Hospital-affiliated participants at this year’s meeting. We have compiled their sessions into a mini schedule:

Name Program/Department Session and role Date Time
Taeun Chang, M.D.  Neonatal Neurology and Neurocritical Care Program PAS Postgraduate Course: Neonatal Neurology: HIE-focused Project-Based (Chair) Friday, 30 April

 

9:00 AM –
4:00 PM
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Taeun Chang, M.D. Neonatal Neurology and Neurocritical Care Program PAS Postgraduate Course: Neonatal Neurology: HIE-focused Project-Based (Presenter) Friday, 30 April 9:30 AM – 10:00 AM
CT
Yuan-Chiao Lu, Ph.D. Developing Brain Research Laboratory Cardiology Poster: Care of the Fetus and Newborn with CHD (Presenter) Saturday, May 1 4:30 PM – 4:45 PM
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Chidiogo Anyigbo, M.D., M.P.H. General and Community Pediatrics Poster: Health Services Research I (Presenter)

 

Saturday, May 1 5:15 PM – 5:30 PM
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Panagiotis Kratimenos, M.D. Neonatology Platform (moderator) Saturday, May 1 4:30 PM – 6:00 PM
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Sudeepta Basu, MBBS, MS Neonatology Hot Topic Symposia: The Neurological Implications of Abnormal Glycemia in Neonatal Encephalopathy and Prematurity (Chair) Sunday, May 2 9:00 AM – 12:00 PM
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Sudeepta Basu, MBBS, MS Neonatology Hot Topic Symposia: The Neurological Implications of Abnormal Glycemia in Neonatal Encephalopathy and Prematurity (Presenter) Sunday, May 2 9:55 AM – 10:15 AM
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Ashraf Harahsheh, M.D., F.A.C.C., F.A.A.P.

 

Cardiology Cardiology: Heart Disease in the Older Child Sunday, May 2 10:00 AM – 12:00 PM
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Rana F. Hamdy, M.D., MPH, MSCE Infectious Diseases

 

Expanding Outpatient Antibiotic Stewardship: Practical Strategies, Novel Settings, and Sociobehavioral Influences (Presenter) Sunday, May 2 10:15 AM – 10:30 AM
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Rana F. Hamdy, M.D., MPH, MSCE Infectious Diseases

 

Hot Topic Debates: Antibiotic Use in Hospitalized Children (Chair) Sunday, May 2 1:00 PM – 3:00 PM
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John Idso, M.D. Critical Care Poster: Resuscitation and Potpourri (presenter) Sunday, May 2 2:20 PM – 2:30 PM
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Michael Shoykhet, M.D., Ph.D. Critical Care Medicine

 

Critical Care Poster: Resuscitation and Potpourri (presenter) Sunday, May 2 2:20 PM – 2:30 PM
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Panagiotis Kratimenos, M.D. Neonatology Neonatal Neurology: Basic & Translational I (moderator) Sunday, May 2

 

4:30 PM – 6:00 PM
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Monika Goyal, M.D. Emergency Medicine and Trauma Services Injury Prevention (moderator) Sunday, May 2 10:00 AM – 12:00 PM
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Ioannis Koutroulis, M.D., Ph.D., M.B.A. Genetic Medicine Research

 

Emergency Medicine III (moderator) Tuesday, May 4 2:00 PM – 4:00 PM
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Sudeepta Basu, MBBS, MS Neonatology Neonatal Neurology: Clinical: HIE and Other Insults (moderator) Tuesday, May 4 4:30 PM – 6:00 PM
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Josepheen De Asis-Cruz, M.D., Ph.D. Center for the Developing Brain Neonatal Neurology: Clinical: HIE and Other Insults (presenter) Tuesday, May 4 4:30 PM – 4:45 PM
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Asad Bandealy, M.D., MPH
Priti Bhansali, M.D. Monika Goyal, M.D.
Sabah Iqbal, M.D. Kavita Parikh, M.D. Shilpa Patel, M.D.
Workshop. ThisIsSTILLOurLane: Protect Kids, Not Guns Monday, May 10 9:00 AM – 11:00 AM
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Cara Lichtenstein, M.D. General and Community Pediatrics APA Injury Control/Advocacy Training Combined SIG (SIG Chair) Monday, May 10 1:00 PM – 3:00 PM
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Terry Kind, M.D., MPH General and Community Pediatrics

 

APA Women in Medicine / Qualitative Research Combined SIG (SIG Chair) Wednesday, May 12 9:00 AM – 11:00 AM
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Phase I: April-30-May 4 and Phase II: May 10-June 4

PAS 2021 Virtual Schedule

Preemie Baby

Optimizing pediatric quality & safety in the NICU

Preemie Baby

Children’s National doctors are optimizing pediatric quality and safety by working to decrease the rate of hypothermia in the Neonatal Intensive Care Unit.

Jessica Cronin, M.D., an anesthesiologist at Children’s National Health System, is working closely with staff and researchers to optimize pediatric quality and safety at the hospital. One of the projects Dr. Cronin is assisting with helps some of the smallest and most vulnerable patients that need surgery. Specifically, she is working to decrease the rate of hypothermia in the Neonatal Intensive Care Unit (NICU).

“It’s a significant problem that children may become cold during the surgery and immediately afterwards,” said Dr. Cronin. “There are a number of complications associated with that occurrence and our doctors and researchers are looking for solutions to combat that issue,” she added.

The hospital staff has instituted several interventions by making data available to the anesthesiologists responsible for temperature management and receiving feedback every month on the types of incidences that are happening. From when a baby is in the NICU, moved to the operating room and when they get transferred back, the doctors at Children’s National have created a checklist of tools to keep babies warm and monitor their temperatures during the perioperative period.

The NICU team has also worked closely with Dr. Rana Hamdy, M.P.H., M.S.C.E., who leads the antimicrobial stewardship team, Sudeepta Basu, M.D., a board certified neonatologist at Children’s National, and the pharmacy team to decrease out antibiotic utilization rates. To achieve its goals, the hospital has implemented the use of real-time check-ins during rounds, new algorithms, de-escalation of antibiotics and the frequent auditing has significantly reduced the unnecessary use of vancomycin.

This project is currently being tested in other parts of the hospital. Furthermore, the Children’s National team recently won an award from the District of Columbia Hospital Association (DCHA) to develop and implement interventions including clinical practice guidelines, educational initiatives, pharmacy-initiated prompts on rounds to de-escalate or discontinue vancomycin review from the antimicrobial stewardship team and provide documentation of culture volumes.

The DCHA serves as the unifying voice working to advance hospitals and health systems in D.C to strengthen systems of care, preserve access and promote better health outcomes for patients and communities. The Children’s National NICU team has been recognized for their outstanding work.

“The work that Dr. Cronin and the rest of the anesthesia team are performing is outstanding,” said Lamia Soghier, M.D., F.A.A.P., C.H.S.E., neonatologist and medical director of the neonatal intensive care unit (NICU) at Children’s National. “Our doctors have cut our rates of hypothermia for postoperative NICU infants by 60% and this project marks one of our major successes!”

Sudeepta Basu

GABA concentration in pre-term brain increases with gestational age

Sudeepta Basu

“A more complete understanding of the diagnostic and prognostic importance of GABA and glutamate in the preterm brain will help us to direct treatment strategies for the most vulnerable preterm infants at risk of brain injury,” says Sudeepta K. Basu, M.D.

The major neurotransmitters gamma-aminobutyric acid (GABA) and glutamate are pivotal to fetal and newborn brain development and influence evolution of brain injury and repair following preterm birth. Magnetic resonance spectroscopy (MRS) enables in vivo measurement of brain metabolites. However, GABA and glutamate are found in the developing brain in low concentrations, and their weak signal can be swamped by the stronger signal of more dominant metabolites.

A Children’s research team reports findings from a pilot study utilizing an innovative technique of MRS to reliably measure in vivo GABA in the developing preterm brain. The groundbreaking research done by the team that includes Principal Investigator Sudeepta K. Basu, M.D., neonatology attending at Children’s National Health System, is very unique and original since there are no existing data of in vivo GABA concentrations in the developing cerebellum. Under the mentorship of Catherine Limperopoulos, Ph.D., director of Children’s Developing Brain Research Laboratory, the team of multi-disciplinary specialists is pursuing cutting-edge technologies in advanced MRI neuroimaging to explore brain development and injury in preterm infants.

The research, presented at the Eastern Society for Pediatric Research (ESPR) annual meeting by Dr. Basu, was honored with the “2018 Meritorious Poster Award.” The research titled “Distinct temporal trends of GABA and glutamate in the cerebellum and frontal cortex of preterm infants” reports, for the first time, positive temporal trends in the specific regions of the developing brain intricately involved in cognitive and motor functions. This work lays the foundation for developing novel ways to diagnose, monitor and investigative brain protective therapies for vulnerable prematurely born infants.

The Children’s team performed non-sedated MRS in 44 preterm infants whose mean gestational age at birth was 26.5 weeks, placing voxels at the middle of the cerebellum and the right frontal cortex. GABA and GIx (glutamate combined with glutamine) were positively correlated with post-menstrual age in the frontal cortex, but not the cerebellum.  At the ESPR meeting, the team also presented for the first time that caffeine, a neuroprotective agent in preemies, leads to increased in vivo GABA concentration in the developing frontal cortex.

“Open questions include whether these findings reflect varying paces of maturation and vulnerability to injury among specific regions of the brain. Also, the relationship between clinical factors and medication exposure and changes in the concentration of these neurotransmitters may guide brain protective therapies in future,” Dr. Basu says. “A more complete understanding of the diagnostic and prognostic importance of GABA and glutamate in the preterm brain will help us to direct treatment strategies for the most vulnerable preterm infants at risk of brain injury.”

Children’s senior fellows from Division of Neonatology made four platform presentations during the ESPR conference:

  • “Caffeine increases GABA/Cr ratio in frontal cortex of preterm infants on spectroscopy.” Aditi Gupta; Sudeepta K. Basu, M.D.; Mariam Said, M.D.; Subechhya Pradhan, Linda White; Kushal Kapse; Jonathan Murnick, M.D., Ph.D.; Taeun Chang, M.D.; and Catherine Limperopoulos, Ph.D.
  • “Impact of early nutrition on microstructural brain development in VLBW Infants.” Katherine M. Ottolini, Nickie Andescavage, M.D.; Kushal Kapse; and Catherine Limperopoulos, Ph.D.
  • “Direct measurement of neonatal cardiac output utilizing the CO status monitor.” Simranjeet S. Sran, Mariam Said, M.D.; and Khodayar Rais-Bahrami, M.D.
  • “Cerebro-cerebellar diaschisis in preterm infants following unilateral cerebral parenchymal injury.” Huma Mirza, Yao Wu, Kushal Kapse, Jonathan Murnick, M.D., Ph.D.; Taeun Chang, M.D.; and Catherine Limperopoulos, Ph.D.