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Related Concept Videos

Primary Lymphoid Organs01:16

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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
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Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
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Intensified Rituximab, Methotrexate, Procarbazine, and Cytarabine (R-MPVA) Regimen With Sequential Addition of Etoposide to R-MPV and Ifosfamide to R-AraC for Newly Diagnosed Primary CNS Lymphoma Patients Aged Between 60 and 70 Years: An LOC Network Study.

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Related Experiment Video

Updated: May 1, 2026

Cervical Lymph Duct-Cannulated Rat Model for Assessing Lymphatic Transport from the Head and Brain
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[Primary CNS lymphoma--an update].

Carole Soussain1, Caroline Houillier2, Sylvain Choquet3

  • 1Hôpital René-Huguenin - Institut Curie, Service hématologie, 35, rue Dailly, 92210 Saint-Cloud, France, Centre expert national des lymphomes primitifs du système nerveux central (LOC) - Réseau cancer rare de l'INCa.

Bulletin Du Cancer
|April 3, 2014
PubMed
Summary

Primary central nervous system lymphomas (PCNSL) survival improved significantly with chemotherapy and high-dose methotrexate (MTX) before radiotherapy. Further research is needed to optimize treatment and reduce neurological toxicity in PCNSL patients.

Keywords:
biologyimagingimmunocompetentimmunocompromisedprimary CNS lymphomatreatment

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Area of Science:

  • Neuro-oncology
  • Hematology
  • Immunology

Context:

  • Primary central nervous system lymphomas (PCNSL) are rare in immunocompetent individuals, delaying research and therapeutic studies.
  • Immunosuppressed patients, particularly those with HIV, present distinct PCNSL characteristics, with Epstein-Barr virus (EBV) playing a key role.

Purpose:

  • To review current understanding and therapeutic strategies for primary central nervous system lymphomas (PCNSL) in both immunocompetent and immunosuppressed populations.
  • To highlight challenges in PCNSL diagnosis, treatment optimization, and the need for improved response evaluation and targeted therapies.

Summary:

  • High-dose methotrexate (MTX)-based chemotherapy followed by radiotherapy significantly improved median survival in immunocompetent PCNSL patients from 16 to 35-45 months, albeit with increased neurological toxicity risk in older adults.
  • Optimal PCNSL treatment remains debated, with ongoing controversies surrounding anti-CD20 antibodies and radiotherapy modalities. Histological diagnosis is mandatory, and advanced imaging aids differential diagnosis.
  • PCNSL in immunosuppressed individuals, especially HIV-infected patients, are well-characterized, with EBV involvement. Treatment is guided by the degree of immunosuppression, aiming for protocols similar to those in immunocompetent patients when feasible.

Impact:

  • Advances in understanding PCNSL biology have identified potential therapeutic targets, suggesting the need to test systemic non-Hodgkin's lymphoma therapies in PCNSL.
  • Improved diagnostic imaging and evaluation of therapeutic response are crucial for better PCNSL management.
  • Future research should focus on refining treatment protocols to enhance efficacy while minimizing neurotoxicity, and exploring novel targeted therapies for PCNSL.