Author Interviews, Brain Injury, Brigham & Women's - Harvard, Inflammation / 14.01.2024
Enhanced Macrophages Developed to Decrease Inflammation in Traumatic Brain Injury
MedicalResearch.com Interview with:
[caption id="attachment_61250" align="alignleft" width="200"] Prof. Mitragotri[/caption]
Samir Mitragotri Ph.D.
Hiller Professor of Bioengineering
Hansjorg Wyss Professor of Biologically Inspired Engineering
Area Chair, Bioengineering
Core Faculty Member, Wyss Institute for Biologically Inspired Engineering
Harvard John A. Paulson School Of Engineering And Applied Sciences
MedicalResearch.com: What is the background for this study?
Response: Traumatic brain injury (TBI) has a heavy burden on the world, affecting ~70 million people globally each year. Despite its prevalence, there are no clinically approved treatments beyond symptom management. There is an urgent need to develop effective therapies to alleviate the damage caused by TBI.
MedicalResearch.com: What do macrophages typically do?
As part of the innate immune system, macrophages migrate to areas of injury to eat pathogens or debris and manage inflammation in response to injury or infection. However, in the majority of cases of TBI, there is no actual infection from a foreign pathogen, leading to excessive inflammation that spreads damage beyond the initial impact.
Prof. Mitragotri[/caption]
Samir Mitragotri Ph.D.
Hiller Professor of Bioengineering
Hansjorg Wyss Professor of Biologically Inspired Engineering
Area Chair, Bioengineering
Core Faculty Member, Wyss Institute for Biologically Inspired Engineering
Harvard John A. Paulson School Of Engineering And Applied Sciences
MedicalResearch.com: What is the background for this study?
Response: Traumatic brain injury (TBI) has a heavy burden on the world, affecting ~70 million people globally each year. Despite its prevalence, there are no clinically approved treatments beyond symptom management. There is an urgent need to develop effective therapies to alleviate the damage caused by TBI.
MedicalResearch.com: What do macrophages typically do?
As part of the innate immune system, macrophages migrate to areas of injury to eat pathogens or debris and manage inflammation in response to injury or infection. However, in the majority of cases of TBI, there is no actual infection from a foreign pathogen, leading to excessive inflammation that spreads damage beyond the initial impact.
Scott Kaplan PhD
Assistant Professor of Economics
United States Naval Academy
Annapolis, MD 21402
MedicalResearch.com: What is the background for this study?
Response: Sugar-sweetened beverages (colloquially known as SSBs), which include sodas, fruit drinks, sports drinks, energy drinks, and sweetened coffee drinks, are the leading source of added sugars in the American diet, according to the CDC. They are associated with serious negative health outcomes, including type 2 diabetes, obesity, heart disease, kidney disease, 
Kalli Koukounas[/caption]
Kalli Koukounas, MPH
Dr. Lu Qi[/caption]
Lu Qi, MD, PhD, FAHA
Interim Chair, Department of Epidemiolog
HCA Regents Distinguished Chair and Professor
Tulane University School of Public Health and Tropical Medicine
Director, Tulane University Obesity Research Center
Director, Tulane Personalized Health Institute
New Orleans, LA 70112
MedicalResearch.com: What is the background for this study?
Response: Adding salt to foods is a behavior reflecting long-term preference to salty diets. High sodium intake is a major risk factor for chronic kidney disease.
In our previous studies, we have found that adding salt to foods at the table is related to various disorders including cardiovascular diseases, diabetes, and mortality. 
Amy Kennalley[/caption]
Amy Kennalley, MBS
First Year Medical Student
Department of Medical Education
Geisinger Commonwealth School of Medicine
MedicalResearch.com: What is the background for this study?
Response: Opioid use disorder (OUD) is a major public health crisis in the United States. Despite the availability of effective treatments, including the medication-assisted treatment (MAT) with methadone, many individuals with OUD do not receive the care they need. Over the COVID-19 pandemic, there were several policy changes related to take-home doses of methadone, which may have impacted access to this lifesaving medication.
The Drug Enforcement Administration's (DEA)'s Automated Reports and Consolidated Ordering System (ARCOS) is a database that tracks the distribution of controlled substances, including methadone distributed to opioid treatment programs (OTPs). This data can be used to assess trends in methadone distribution over time. Additionally, the Medicaid State Drug Utilization Data (SDUD) database provides comprehensive information on methadone prescribing to Medicaid patients.
By analyzing data from both ARCOS and SDUD, we aimed to provide a comprehensive picture of methadone distribution for OUD treatment in the United States. These findings1 are important because drug overdose deaths, primarily involving opioids, increased substantially (49%) from 2019 (70,980) to 2021 (~106,000).2
Dr. Klompas[/caption]
Michael Klompas MD, MPH, FIDSA, FSHEA
Hospital Epidemiologist
Brigham and Women’s Hospital
Professor of Medicine and Population Medicine
Harvard Medical School and
Harvard Pilgrim Health Care Institute
MedicalResearch.com: What is the background for this study? Can teeth be safely brush in patients who are comatose, intubated or have NG tubes?
Response: Pneumonia is thought to occur when secretions from the mouth get into the lungs. Since there are many microbes in the mouth, there’s a risk that secretions from the mouth that get into the lungs will lead to pneumonia. Toothbrushing may lower this risk by decreasing the quantity of microbes in the mouth.
It is indeed safe and appropriate to brush the teeth of someone who is comatose, intubated, or who has an NG tube. Indeed, our study found that the benefits of toothbrushing were clearest for patients receiving mechanical ventilation.
Dr. Angélica Cifuentes Kottkamp[/caption]
Angélica
Dr. Brousseau[/caption]
David Brousseau, MD, MS
Chair of Pediatrics
Nemours Children’s Health, Delaware and the
Sidney Kimmel Medical College at Thomas Jefferson University
Prof. Rong Xu[/caption]
Rong Xu, PhD
Dr. Davaasambuu[/caption]
Dr Ganmaa Davaasambuu MD PhD
Associate Professor
Harvard T.H. Chan School of Public Health
MedicalResearch.com: What is the background for this study?
Response: The crucial role of vitamin D in facilitating calcium absorption from the diet and promoting calcium deposition in bones (known as 'mineralization') has been a long-established understanding. Furthermore, some observational studies have reported an association between low vitamin D levels and a heightened risk of bone fractures in children. This raised the possibility that vitamin D supplements could potentially play a role in decreasing fracture risk in children with initially low baseline levels. However, clinical trials assessing the causal link between low vitamin D status and reduced fracture risk were necessary, and such trials had not been conducted before.
Dr. Callaghan[/caption]
Bridget Callaghan Ph.D.
Assistant Professor of Psychology
UCLA
Dr. Callahan studies interactions between mental and physical health across development.
MedicalResearch.com: What is the background for this study?
Response: A growing body of evidence links the gut microbiome to brain and immune functioning, and changes to that community of microorganisms is likely among the ways that hardship affects children’s socioemotional development.
Limited evidence in humans has demonstrated the adversities experienced prenatally and during early life influence the composition of the gut microbiome, but no studies had examined whether stress experienced in a mother's own childhood could influence the microbiome of the next generation of children.
Kazi Albab Hussain[/caption]
Kazi Albab Hussain
Graduate Student (PhD)
Specialization: Water Resources
Advisor: Professor Yusong Li, PhD
Associate Dean for Faculty and Inclusion
MedicalResearch.com: What is the background for this study?
Response: Microplastics have been detected in various food items and beverages, including table salt, bottled water, fish, and mussels. The extensive use of plastic-based products in food preparation, storage, and handling has raised concerns about the direct release of microplastics. Interestingly, we often discuss microplastics but overlook nanoplastics in the conversation. Due to their smaller size, nanoplastics are harder to be detected.
In our study, we wanted to see the release of both microplastics and nanoplastics, as nanoplastics may be even more toxic than microplastics.
Unfortunately, infants and toddlers are particularly vulnerable to the potential health impacts of micro- and nanoplastics. Studies have shown significant ingestion of these particles from polypropylene feeding bottles and silicone-rubber baby teats. We aimed to investigate the release of of micro- and nanoplastics, estimated their exposure for infants and toddlers, and evaluated their cytotoxicity to human embryonic kidney cells.
