{"id":24226,"date":"2025-10-24T10:29:43","date_gmt":"2025-10-24T15:29:43","guid":{"rendered":"https:\/\/vetmed.tamu.edu\/news\/?p=24226"},"modified":"2025-10-24T10:29:44","modified_gmt":"2025-10-24T15:29:44","slug":"role-of-lymphatic-system-research","status":"publish","type":"post","link":"https:\/\/vetmed.tamu.edu\/news\/press-releases\/role-of-lymphatic-system-research\/","title":{"rendered":"Lymphatic System Presents New Frontier In Neuromuscular Disease Research"},"content":{"rendered":"
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The lymphatic system circulates immune cells and clears waste, and problems with it may actively contribute to the development of neuromuscular diseases.<\/figcaption><\/figure>\n<\/div>\n\n\n

Imagine a world where diseases like\u00a0amyotrophic lateral sclerosis\u00a0(ALS) no longer steal a person\u2019s ability to move or speak \u2014 a world where someone like Stephen Hawking could continue his work without limitation. That vision may be one step closer to reality, thanks to a groundbreaking discovery from scientists at\u00a0Texas A&M Health\u00a0who have identified an unexpected player in ALS and other neuromuscular diseases: the body\u2019s lymphatic system.<\/p>\n\n\n\n

In two recent studies, a team of scientists under the guidance of\u00a0Dr. Mendell Rimer and Dr.\u00a0Mariappan Muthuchamy at the\u00a0Texas A&M University Naresh K. Vashisht College of Medicine\u00a0and\u00a0Dr. Peter Nghiem<\/a> at the Texas A&M\u00a0College of Veterinary Medicine and Biomedical Sciences<\/a>, revealed that problems in the lymphatic network \u2014 which helps regulate fluid balance and immune function \u2014 may actively contribute to the development of Duchenne muscular dystrophy (DMD) and ALS.<\/em><\/p>\n\n\n\n

The groundbreaking studies, published\u00a0in\u00a0Proceedings of the National Academy of Sciences (PNAS)<\/a>\u00a0and\u00a0Disease Models and Mechanisms (DMM)<\/a>, show that lymphatic dysfunction may not simply be a side effect of chronic inflammation but a driving force behind disease progression.<\/p>\n\n\n\n

\u201cThis is the first time the lymphatic system has been directly implicated in these diseases,\u201d Muthuchamy said. \u201cOur findings open new avenues for research and may eventually lead to novel diagnostic or therapeutic approaches.\u201d<\/p>\n\n\n\n

New Clues In Familiar Diseases<\/h2>\n\n\n\n

ALS, also known as Lou Gehrig\u2019s disease, is a fatal condition that attacks motor neurons, leading to muscle weakness and paralysis.\u00a0Roughly 30,000 Americans<\/a>\u00a0live with ALS at any given time.<\/p>\n\n\n\n

Duchenne muscular dystrophy, or DMD, affects about one in every 5,000 boys<\/a> worldwide and causes severe muscle degeneration. While research has traditionally focused on muscle tissue itself, the Texas A&M team turned their attention to the lymphatic system, which circulates immune cells and clears waste.<\/p>\n\n\n\n

Their findings suggest that a faltering lymphatic system may trigger or worsen inflammation and tissue damage in both diseases.<\/p>\n\n\n\n

Groundbreaking Results<\/h2>\n\n\n\n

In the ALS study \u2014 co-led by graduate student Akshaya Narayanan and research associate Bonnie Seaberg under the guidance of Muthuchamy and Rimer \u2014 the researchers identified a novel link between lymphatic vessel dysfunction and neuroinflammation. The work has gained attention across the scientific community, ranking among DMM\u2019s most-read articles and sparking online discussion on\u00a0Nature\u2019s LabAnimal\u00a0platform.<\/p>\n\n\n\n

In the DMD study, led by postdoctoral scientist Bhuvaneshwaran Subramanian, PhD, and graduate students Shedreanna Johnson and Akshaya Narayanan, with senior contributions from Muthuchamy, Rimer and Peter P. Nghiem, the team discovered that the loss of dystrophin \u2014 the protein missing in DMD \u2014 disrupts lymphatic structure and function. These disruptions appear early, even before inflammation begins, suggesting that lymphatic malfunction might trigger the muscle damage seen in DMD.<\/em><\/p>\n\n\n\n

Microscopy images revealed that lymphatic vessels in diseased animal models lose their normal alignment, showing disorganized fibers in their vessel walls. In some models DMD, treatment with microdystrophin \u2014 a smaller version of the dystrophin gene that helps improve muscle function \u2014 also reduced harmful inflammation and abnormal growth of lymphatic vessels. This finding shows that the lymphatic and muscle systems are closely linked, opening the door to new treatment possibilities for DMD.<\/p>\n\n\n\n

A Path Toward New Treatments<\/h2>\n\n\n\n

Together, these findings highlight the lymphatic system as a new frontier in neuromuscular disease research.<\/p>\n\n\n\n

\u201cIf we can restore lymphatic function, we may be able to reduce inflammation and slow disease progression,\u201d Muthuchamy said. \u201cIt\u2019s a completely new way of thinking about how these diseases develop and how we might treat them.\u201d<\/p>\n\n\n\n

The research was supported by the National Institutes of Health, the American Heart Association and the Department of Defense and involved collaborators from the University of Missouri and Texas A&M\u2019s Department of Biology.<\/p>\n\n\n\n

###<\/p>\n\n\n\n

For more information about the Texas A&M College of Veterinary Medicine & Biomedical Sciences, please visit our website at\u00a0<\/em>vetmed.tamu.edu<\/em><\/a>\u00a0or join us on\u00a0<\/em>Facebook<\/em><\/a>,\u00a0<\/em>Instagram<\/em><\/a>, and\u00a0<\/em>X<\/em><\/a>.<\/em><\/p>\n\n\n\n

Contact Information:<\/em><\/strong> Jennifer Gauntt, Director of VMBS Communications, Texas A&M College of Veterinary Medicine & Biomedical Sciences, <\/em>jgauntt@cvm.tamu.edu,<\/em><\/a> 979-862-4216<\/a><\/em><\/p>\n\n\n\n

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