Nutrient Found in Meat, Egg and Dairy Crucial for Brain Development

Until now, a nutrient called asparagine, found in foods such as meat, eggs, and dairy products, was considered non-essential.

Until now, a nutrient called asparagine, found in foods such as meat, eggs, and dairy products, was considered non-essential because it is produced naturally by the body.

Researchers at the University of Montreal and its affiliated CHU Sainte-Justine Hospital found that the amino acid is essential for normal brain development. This is not the case for other organs. "The cells of the body can do without it because they use asparagine provided through diet. Asparagine, however, is not well transported to the brain via the blood-brain barrier," said senior co-author of the study Dr. Jacques Michaud, who found that brain cells depend on the local synthesis of asparagine to function properly. First co-author José-Mario Capo-Chichi and colleague Grant Mitchell also made major contributions to the study.

Diet, Nutrition and Supplements for Osteo-Arthritis and Rheumatoid Arthritis
Rheumatoid arthritis patients should consume a diet rich in natural antioxidant and anti-inflammatory nutrients and avoid foods like sugar, saturated fats, and trans fatty acids.

In April 2009, a Quebec family experienced the worst tragedy for parents: before the age of one, one of their sons died of a rare genetic disease causing congenital microcephaly, intellectual disability, cerebral atrophy, and refractory seizures. The event was even more tragic because it was the third infant to die in this family from the same disease.

This tragedy led Dr. Michaud to discover the genetic abnormality responsible for this developmental disorder. "We are not at the verge of a miracle drug," Michaud said, "but we at least know where to look."

The team identified the gene affected by the mutation code for asparagine synthetase, the enzyme responsible for synthesizing the amino acid asparagine. The study is the first to associate a specific genetic variant with a deficiency of this enzyme. "In healthy subjects, it seems that the level of asparagine synthetase in the brain is sufficient to supply neurons," Michaud said. "In individuals with the disability, the enzyme is not produced in sufficient quantity, and the resulting asparagine depletion affects the proliferation and survival of cells during brain development."

Health Benefits of Almond Oil - Types - Nutritional Value - Reference
Almond oil promotes heart health, stabilizes blood sugar levels, helps you maintain healthy body weight, and protects your skin from sun damage. Here’s complete information on almond oil, their types, their nutritional value and their health benefits.

Potential treatment

Children who are carriers of this mutation suffer, to varying degrees, from a variety of symptoms, including intellectual disability and cerebral atrophy, which can lead to death. The Quebec family lost three infant sons to this disorder. Two of their other children are alive and healthy.

Health Benefits of Avocados - Nutritional Values - Facts and Research - FAQs
Did you know how healthy avocados are and how they can benefit you during your pregnancy, control diabetes and prevent stroke? Read to know the health benefits of avocados.

Knowledge about gene mutations can be used to develop treatments. "Our results not only open the door to a better understanding of the disease," Michaud said, "but they also give us valuable information about the molecular mechanisms involved in brain development, which is important for the development of new treatments."

For example, asparagine supplement could be given to infants to ensure an adequate level of asparagine in the brain and the latter's normal development. "The amount of supplementation remains to be determined, as well as its effectiveness," said the geneticist. "Since these children are already born with neurological abnormalities, it is uncertain whether this supplementation would correct the neurological deficits."

Health Benefits of Bananas / Nutritional Facts of Banana
Bananas are one of the most consumed fruits in the world. They offer a wide array of health benefits including heart health, skin care and bone strength.

Creating a pediatric clinical genomics centre

To date, nine children from four different families have been identified as carriers of the mutation: three infants from Quebec, three from a Bengali family living in Toronto, and three Israelis, whose symptoms are less severe.

Dr. Michaud's team discovered the genetic mutation by comparing the complete DNA of the Quebec family's children with symptoms of the disease. The researchers then identified children, among other families, who carried the single candidate gene. The gene was revealed only in the affected children, but not in the unaffected children of the families studied.

The discovery comes at a time when CHU Sainte-Justine Mother and Child University Hospital has reached an agreement with Génome Québec to create the first pediatric clinical genomic centre in Canada. "This initiative will transform the quality of care for younger patients to ensure better prevention from childhood," says Dr. Michaud. "More than 80% of genetic diseases occur in childhood or adolescence. "This new technology will allow us to sequence all the genes in the genome and obtain a genetic portrait of the children more quickly to know which disease they suffer from and to provide treatment, if available, or when it becomes available."

Source-Eurekalert