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<div about="/news-events/news-releases/chronic-high-blood-sugar-may-be-detrimental-developing-brain-young-children" typeof="sioc:Item foaf:Document" class="ds-1col node node--nih-news-release news-release view-mode-full node--full node--nih-news-release--full clearfix">
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<p class="publishdate"><span class="tag-term">News Release</span></p><p class="publishdate"><span property="dc:date" datatype="xsd:dateTime" content="2014-12-17T00:00:00-05:00" class="date-display-single">Wednesday, December 17, 2014</span></p><h1>Chronic high blood sugar may be detrimental to the developing brain of young children</h1><p class="subtitle">
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NIH study shows young children with type 1 diabetes have significant difference in brain development.</p><p>Young children who have long-term high blood sugar levels are more likely to have slower brain growth, according to researchers at centers including the National Institutes of Health.</p>
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<p>Researchers did not find significant cognitive differences between the healthy children and those with type 1 diabetes, but they believe a continuing study with the same groups of children may show changes there as well.</p>
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<div class="pullquote">
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<p>“We have never linked this before to brain structure in a young child.”</p>
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<p class="caption">—<strong>Dr. Karen Winer</strong><br />
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Pediatric Endocrinologist, <em>Eunice Kennedy Shriver</em> National Institute of Child Health and Human Development (NICHD)</p>
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</div>
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<p>The findings could lead to a major shift in the way children with type 1diabetes are treated, said Dr. Karen Winer, a co-author of the study and a pediatric endocrinologist at the NIH’s <em>Eunice Kennedy Shriver</em> National Institute of Child Health and Human Development (NICHD), which co-funded the 18-month study. The findings were published online in the journal Diabetes</p>
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<p>“We found that chronic high blood sugar may be detrimental to the developing brain of young children,” Winer said. “We have never linked this before to brain structure in a young child.”</p>
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<p>The study tracked 144 children ages 4 to 9 who had been living with type 1diabetes for an average of 2 and one-half years. Researchers used MRI scans to examine brain structure and function in the children with type 1 diabetes compared with 72 healthy children, including siblings. The children were well-matched for age, body mass index and socioeconomic status. Researchers found significantly slower brain growth overall, as well as in specific brain regions.</p>
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<p>“We believe the results are remarkable and show the potential vulnerability of the young developing brain to abnormally elevated glucose levels,” said Dr. Nelly Mauras, lead author of the article and head of Pediatric Endocrinology at Nemours Children’s Clinic in Jacksonville, Florida. Five Clinical Pediatric Diabetes Centers that comprise the Diabetes Research in Children Network (DirecNet) conducted the study.</p>
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<p>It is difficult to quantify the extent of the slowed brain growth, said Dr. Allan Reiss, Robbins Professor of Psychiatry, Radiology and Pediatrics and director of the Center for Interdisciplinary Brain Sciences Research at Stanford University School of Medicine, Stanford, California. Reiss and Mauras will lead a continued study with the same children, funded by NICHD.</p>
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<p>“We certainly hope that these differences can be reversed with better diabetes control,” Reiss said.<br />
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Traditionally, pediatricians have allowed young children with type 1 diabetes to maintain above-normal blood sugar levels. The theory was that it was safer to run high than low, since consistently low blood sugar levels could risk a child having a seizure, Winer said. This study shows that chronic high blood sugar levels may slow growth in the brain’s gray matter, which affects cells and signals, as well as in the brain’s white matter, which affects the brain’s wiring.</p>
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<p>“I think this is a really powerful study,” Winer said. “The differences they saw in the brain scans were unequivocal.”</p>
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<p>In addition to high blood sugar levels, researchers found that blood sugar levels often varied, spiking too high and dropping too low. These sharp swings raised concerns about the impact to brain function.</p>
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<p>“This is the thing that parents always worry about when it comes to a child with a chronic illness,” Winer said, “Does it affect their brain? The good news here is that there are some viable solutions on the horizon that parents should be aware of.”</p>
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<p>New technology allows doctors to monitor blood sugar levels quickly, accurately and continuously. This technology is more accessible than before, and doctors can anticipate lower blood sugar levels and deal with them proactively, she said.</p>
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<p>“The future of diabetes is very promising because technology has come so far,” Winer said.</p>
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<p><strong>About the National Institutes of Health (NIH):</strong>
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NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit <a href="/">www.nih.gov</a>.</p>
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<h3>Reference</h3><p>The Diabetes Research in Children Network (DirecNet) is a consortium of five clinical pediatric diabetes centers: Nemours Children’s Clinic, Jacksonville, Florida; Stanford University; Washington University, St Louis; University of Iowa, Iowa City and Yale University, New Haven, Connecticut. In addition, a clinical coordinating center (Nemours Children’s Clinic,) an imaging and data coordinating center at Stanford University, funded by NICHD and the Jaeb Center for Health Research in Tampa, Florida all participated in the study.</p>
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