As we drove toward Durango, I watched the landscape blur, completely mesmerized by the tall trees. The air, rich with the wonderful scent of maple and woodsmoke, perfectly framed the brilliant colors of the maple leaves. That got me thinking about a recent article that I read about Maple Syrup Urine Disease (MSUD). MSUD is a rare genetic disorder, and it’s distinct symptom of the smell of Maple Syrup in urine and sweat is a main indicator. With the advancements in the medical field, screening for this is included in the newborn screening and is characterized by the sweet, maple syrup-like odor in the urine, sweat, and earwax of affected infants.
Table of Contents
What is Maple Syrup Urine Disease?
What are the types?
Is there any treatment?
Conclusion
What is Maple Syrup Urine Disease?
MSUD is inherited genetically and a child will only get the disease if both parents have a mutated copy of relevant genes. This genetic mutation inherited prevents proper functioning of the enzyme responsible for the breakdown of three branched-chain amino acids (BCAA) named leucine, isoleucine and valine. When these BCAAs and their toxic byproducts can not be processed, they build up to harmful levels in blood and other tissues affecting brain and nervous system.
What are the types of Maple Syrup Urine Disease?
MSUD is classified into several types based on the severity of the enzyme deficiency. These are classic, intermediate, intermittent and thiamine-responsive MSUD.
- Classic MSUD: The most severe and common which appears soon after birth
- Intermediate MSUD: Less severe than Classic and usually appears later in infancy or childhood.
- Intermittent MSUD: Mildest of all and often people diagnosed can tolerate normal protein levels.
- Thiamine-responsive: A very rare and mild form of the disease.
Is there any treatment?
Treatment is generally lifelong and involves mainly keeping the protein levels low. The cornerstone of treatment is often maintaining a strict low-protein diet. Since individuals cannot consume natural protein-rich foods, the nutrients often consumed through those need to be replenished through other means, like prescription medical foods. For people with classic form, often liver transplant is often an option.
Conclusion
MSUD is a severe disease that can severely impact patients. With early diagnosis and strict, consistent dietary management, individuals with MSUD can often lead healthy lives with normal growth and cognitive development.
