NBDF funds a broad range of research programs that seek to increase our understanding of the science behind bleeding disorders, how they affect people's lives, and pathways to better treatments and cures.
A Feasibility and Usability Study of a Nursing-Orchestrated, Customized Immersive 3 Dimensional Virtual Reality Environment in Children with Hemophilia Undergoing Routine Intravenous Procedures
The purpose of this project is to request support for the development of a Virtual Reality Environment (VRE) study program for pediatric patients diagnosed with hemophilia. The VRE program proposed was developed and created for children and includes interactive imagery, character avatars and colorful visual environments. This VRE program will be deployed by the child in a clinical setting and is proposed to help decrease, anxiety and needle phobia during intravenous factor infusions. Outcome measures will include an anxiety scale before and after each infusion, collection of biophysiologic data, pain score and visual analogue evaluation. The expected result of this nursing project is to monitor the use of a VRE in the pediatric population with a reduction of fear, anxiety and pain experienced with intravenous factor infusions.
Molecular Basis of Procofactor to Cofactor Activation in FVIII
Dr. Parthasarathy's research will tackle two important biological issues in coagulation - namely how procofactor FVIII converts to the active cofactor form (FVIIIa) and binds to IX and X, and the location of FVIII in generating the active Xase complex. Results from this study will provide molecular and biochemical insights into the role of FVIIIa in regulating hemostasis and further elucidate the interactions between coagulation complexes. Dr. Parthasarathy obtained his Masters in Biotechnology from Jawaharlal Nehru University in New Delhi, India and received his Ph.D. in Biochemistry from the University of Kansas in 2011. He has been a postdoctoral researcher in the lab of Dr. Rodney Camire at The Children's Hospital of Philadelphia since July 2011. This award has been made possible through a generous donation from Hemophilia of Georgia, Inc.
Anti-fibrinolytic Strategies to Decrease Bleeding in Hemophilic Arthropathy
Dr. von Drygalski's research focuses on better understanding the mechanisms operating the anti-fibrinolytic system and how this process works in patients with hemophilia and specifically with joint bleeding. Accelerated fibrinolysis and clot instability are becoming increasingly recognized as contributing factors to bleeding in hemophilia. One important molecule that prevents fibrinolysis is called TAFI (Thrombin Activatable Fibrinolysis Inhibitor). Dr. von Drygalski will be studying the dual anti-fibrinolytic and anti-inflammatory functions of TAFI in hemophilia arthropathy and develop a therapeutic TAFI-based approach to improving the efficacy of FVIIa based bypassing strategies for acute bleeding and joint protection. Her mentors and collaborators are John H. Griffin, PhD, Laurent O. Mosnier, PhD and Martin Lotz, MD, distinguished researchers at UCSD -The Scripps Research Institute. Dr. von Drygalski received her M.D. from the Universities of Erlangen/Nurnberg and Munich in 1995 and her Pharm.D. from the University of Munich in 1988. She joined the faculty in July 2011 as Assistant Clinical Professor at UCSD and Director of the Adult Hemophilia and Thrombosis Treatment Center, Division of Hematology/Oncology, Department of Medicine. She also has an appointment as Adjunct Assistant Professor at the Scripps Research Institute (TSRI). The funding for this award is made possible thanks to a generous grant from Novo Nordisk.
Exercise Versus DDAVP in Patients with Mild Hemophilia A - Which Is Better and Do They Work Additively in Improving Hemostasis?
Preliminary work done by Dr. Riten Kumar and colleagues has documented that moderate intensity exercise is associated with a significant improvement in multiple coagulation parameters in post-adolescent males with mild-moderate hemophilia A. As a continuation to our previous work, we now hope to compare the impact of moderate intensity exercise to DDAVP on laboratory coagulation parameters in post-adolescent males with mild hemophilia A. We also hope to investigate the impact of sequentially administering these interventions on hemostatic indices. Our over-arching hypothesis is that increase in coagulation parameters (particularly FVIII:C) with moderate intensity aerobic exercise would be non-inferior to DDAVP. We additionally hypothesize that we will appreciate an additive effect of sequentially administering clinical implications for patients with MHA. It may negate the use of DDAVP pre- exercise and could potentially lead to clinicians advising patients to appropriately warm-up (e g running), to raise their FVIII/VWF levels prior to undertaking more rigorous sports. It will also lay the foundation for future studies investigating the interaction between aerobic exercise and hemostasis in subjects with bleeding disorders these interventions. Should our hypothesis be correct, our study would have significant clinical implications for patients with MHA. It may negate the use of DDAVP pre-exercise and could potentially lead to clinicians advising patients to appropriately warm-up to raise their FVIII/VWF levels prior to undertaking more rigorous sports. It will also lay the foundation for future studies investigating the interaction between aerobic exercise and hemostasis in subjects with bleeding disorders.
Mechanoregulation of von Willebrand Factor Inhibition and Activation
Per Dr. Fu, the JGP provided her with the opportunity to work on hemophilia, as well as von Willebrand disease. After the completion of her JGP project, Dr. Fu remained in the bleeding disorder field.
Mothers' Perceived Vulnerability, Protective Behaviors and Stress in Relation to Their Sons with Hemophilia
It is unknown if there are differences in attitudes and behaviors between mothers of sons with hemophilia who have a known family history of hemophilia compared to mothers without a known family history. To capture these differences, this study will measure mothers' perceived vulnerability of their sons, protective behaviors toward their sons and reported stress in the mother-son relationship. Sixty mothers will complete the following surveys: Parent Protection Scale, Child Vulnerability Scale and Parenting Stress Index/Short Form. The results of this data will influence clinic social work practice in the comprehensive care model at hemophilia treatment centers.
A Comprehensive and Unbiased Screen of ADAMTS13 Substrate Specificity
The Use of High Resolution Power Doppler Musculoskeletal Ultrasound (MSKUS) in Bleeding Disorders
The project's ultimate goal is to expand nursing knowledge of hemarthrosis/soft-tissue bleeding detection by presenting our HTC's experience with how MSKUS improves accurate diagnosis and guides treatment of bleeding and other pain etiologies. By completing the retrospective data review, we hope that the experience of a large center HTC spanning both adults and pediatrics will be made available. We believe that the current restraints of MSKUS implementation include cost of equipment, operator certification, and quality of interpretation to guide interventions. Therefore, partnering with radiology experts may be helpful for other HTCs around the country when using this modality in the future. Our center's experience will show that collaboration with radiologists for real-time imaging is successful with nursing evaluation and coordination.
Understanding the Interplay between Electron Transfer and VKOR Supported Blood Coagulation
Induced Pluripotent Stem Cell-Derived Platelet Therapy for Hemophilia A
Dr. Noh's research will utilize induced pluripotent stem cells (iPSC) and manipulate them in vitro to expand production of megakaryocytes and platelets that express therapeutic proteins, including FVIII. The project will further determine whether this system of autologous platelets which overexpress FVIII can be delivered directly to the site of injury and hemorrhage, thereby circumventing and evading neutralization by alloantibody inhibitors in hemophilia A. Dr. Noh received her Ph.D. in Preventive Pharmacology from Seoul National University in South Korea. She has been a postdoctoral fellow in Dr. Mitchell Weiss' lab at The Children's Hospital of Philadelphia since 2012. Dr. Noh is currently being mentored in this JGP project by Dr. Mortimer Poncz at CHOP.
In vivo Imaging of Bleeds in Hemophilia B
Dr. Chappell's research project will develop a model for characterizing bleeding in hemophilia and particularly in joints. Using mouse models of hematoma formation and knee joint bleeding, Dr. Chappell will use 3D fluorescent imaging technology in "living" hemophilia B mice to better trace bleeding over time- from induction of a bleed to its resolution. This project will provide additional insights on the basic science underlying hemophilic bleeds, not to mention the optimal interventions and timing of treatment to potentially prevent damage caused by bleeds. Dr. Chappell earned her Ph.D. in Pharmaceutical Sciences from UNC Chapel Hill in 2013. She will pursue her research under the mentorship of Dr. Dougald Monroe, Professor in the Division of Hematology/Oncology, UNC School of Medicine and the UNC McAllister Heart Institute.
The Role of the Hemophilia Treatment Center Social Worker: A National Survey
Social workers have been active members of the multidisciplinary teams of hemophilia treatment centers for many years, but the roles of these social workers may differ greatly from center to center. Social workers are often the advocate for patients and a primary source of assistance, information and referral. In many HTCs, they also provide counseling and therapy services to patients and consultation to staff. Indeed, these social workers appear to provide a wide variety of psychosocial and case management services to patients with bleeding disorders and their families. This research project will attempt to describe the various role tasks of hemophilia treatment center social workers, describe these tasks and identify the influences of the role in each HTC. An online survey will be developed and emailed to the approximately 135 HTC social workers across the nation. Data will be analyzed and shared with the social worker community through sessions and posters and the NHF annual meeting.
Effect of Exercise on Bone Mineral Density and Strength in Factor VIII Deficient Mice
Bleeding Disorders Pediatric Pain Initiative
Pediatric pain, especially in the hemophilia population, is under-recognized and under-treated. Barriers to adequate treatment include lack of knowledge, variability of practice, and outmoded beliefs. All of these factors lead to a culture of slow to no change in practice patterns. Health care providers need current, state-ofthe- art education and tools to assist them in developing the skills required to assess and manage pain in children. Children are often given minimal or no analgesia for procedures that would be treated aggressively in adults. Although more is now known about pain management in children, this knowledge has not been widely or effectively translated into routine pediatric clinical practice, including the practice of most HTCs. In the bleeding disorders community, especially for those with hemophilia, children begin to experience frequent pokes secondary to frequent factor infusions and blood draws at an early age. Depending on the severity of their disorder, they may experience a poke daily or more frequently. This gives rise to anxiety for the child as well as their parents and other family members. Anticipatory anxiety is not uncommon in this setting. The child and their family often feel as though they have no control over the situation. A distraction box is filled with tools for providers to implement during any procedure involving children. The simple act of distraction (in whatever form) can significantly decrease pain and anxiety for both the child as well as their parent. This box offers multiple methods of distraction and informational videos on techniques. The focus of the Poke Plan is to give control over a painful or anxiety provoking situation back to the parent/child. The simple wallet card quickly educates any provider on how the child best handles the discomfort and anxiety associated with a poke/needlestick. Filling out the card educates the parents on distraction techniques that may be helpful for their child in painful and anxiety provoking situations. To date there have not been any studies done in this population. However centers in Michigan using similar Poke Plans in the general pediatric population include but not necessarily limited too are: Sparrow Hospital in Lansing Michigan, Munson Medical Center in Traverse City, Michigan as well as the University of Michigan Children and Women’s Hospital in Ann Arbor, Michigan.
Identification of Chemical and Genetic Modifiers of Bleeding Disorders Using a Zebrafish Model System
Prevalence of Gross Motor Delays in Children with Hemophilia
The purpose of this project is to determine if children with hemophilia have gross motor delays. Gross motor skills include, but are not limited to walking, running, jumping, climbing, crawling, balancing, kicking, catching and throwing activities. The large muscles of the body are responsible for performing these types of activities. Strength, balance and coordination are needed to demonstrate and improve these skills. Children with hemophilia may experience internal bleeding in their joints or muscles, which limits their activity. Some children with hemophilia may be restricted from active play or sports for fear of getting an injury that could cause internal bleeding. When activity is restricted, there can be decrease in strength, balance and endurance. If a child has gross motor delays, it puts him at risk for injury when playing with his peers. Physical Therapy evaluations in the Hemophilia Treatment Center help determine changes caused by bleeding episodes. There are specific motor skills children master as they grow, which represent strength, balance and coordination. The comprehensive clinic visits do not allow time to complete an intensive gross motor assessment. Physical Therapists use Manual Muscle Testing, MMT, to grade the strength of each muscle group. MMT strength testing is not appropriate for young children and does not represent strength during functional activities. To accurately determine children's muscle strengths, a standardized gross motor test should be used. The PT at the Comprehensive Care Center for Inherited Blood Disorders will conduct gross motor evaluations in conjunction with the annual visit. The scores will be evaluated to determine which patients have gross motor delays, so they can be referred for therapy services. The BOT 2 is the standardized gross motor test that will be used to determine gross motor levels. The gross motor skills that will be evaluated include bilateral coordination, balance, running speed and agility, upper limb coordination and strength. All patients with hemophilia between the ages of 4 and 12 years will be eligible to be evaluated in the upcoming year with additional PT testing with their annual visit. Patients may be referred to therapy or given a home exercise program depending on the deficits noted during the assessments. The goal is to improve our standard of care at the HTC, by adding gross motor screening for our patients to ensure appropriate referrals are made for therapy services.
A Standardized Approach to Empowering Families with Hemophilia
Hemophilia is a rare lifelong condition which can be potentially life-threatening. Parents bare a significant responsibility for delivery of medical care because the treatment for hemophilia begins early in life for children within the home setting. As a result, parents frequently exhibit a heightened level of stress, anxiety, and subsequent trauma around the acceptance of the illness and the administration of medication management. To address the multifaceted nature of chronic illness for patients and their families, the ideal treatment utilizes a multidisciplinary team. Our proposed 3P Patient Parent Power Program aims to standardize care for families with patients of hemophilia using a tiered approach of psychosocial support. The necessary level of support will be provided to parents in order for them to successfully provide in-home prophylactic factor treatment. The goal of the program is to reduce parental stress and anxiety related to this chronic illness and increase feelings of empowerment for the parent and child.
Telehealth Videoconferencing for Children with Hemophilia and Their Families: A Clinical Project
As technology advances and provides electronic tools for enhancing communication by phone and computer, health care providers are finding ways to adapt these tools into patient care. Telehealth is the use of electronic information and telecommunications technologies to support long-distance clinical health care. For patients with hemophilia who experience a bleed in the home setting, telehealth has the potential to help the patient, family, and health care provider assess what is going on and develop the best plan of care, all while the patient stays in the home setting. In this clinical project, we will use the telehealth resources available at our institution to partner with patients and families with severe hemophilia with a high risk of bleeding episode who also have a home computer with a camera and internet access. We want to find out more about how many patients have these home resources, how to use video-conferencing when managing a bleed and what patients, families, and health care staff think about using video conferencing. This will help us plan future research using telehealth video-conferencing for a larger group of hemophilia patients.
In vivo Selection of Hematopoietic Stem Cells that are Genetically-Modified to Express Platelet-FVIII for Hemophilia A Gene Therapy
The goal of Dr. Chen's research is to examine a method for selectively expanding hematopoietic stem cells expressing the factor VIII transgene. She will also examine the immune consequences of this approach, based on the idea that gene transfer in platelets evades immune recognition. This research has the potential to elicit important clues to developing an approach for gene therapy of hemophilia A and hemophilia A with inhibitors.
Dr. Chen earned a PhD in hematology from Fujian Medical University in China. She already has more than 27 papers published in the Chinese medical literature. Her research in hemophilia and gene therapy will be under the mentorship of Dr. Qizhen Shi, MD, PhD, Associate Investigator at the Blood Research Institute and Assistant Professor of Pediatric Hematology at the Medical College of Wisconsin.