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Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
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Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
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Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
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Sorting out the risks in progressive multifocal leukoencephalopathy.

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This summary is machine-generated.

Progressive multifocal leukoencephalopathy (PML) is a rare brain infection. This study proposes a PML risk categorization for immunosuppressive drugs to aid physician-patient decision-making regarding therapy risks and benefits.

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Area of Science:

  • Neuroimmunology
  • Infectious Diseases
  • Neurology

Background:

  • Progressive multifocal leukoencephalopathy (PML) is a rare, opportunistic central nervous system infection caused by JC virus reactivation.
  • PML is often fatal and survivors frequently experience significant neurological deficits.
  • Attributing PML causality to specific immunosuppressive therapies is challenging due to confounding factors and limited understanding of pathogenesis.

Purpose of the Study:

  • To propose a categorization of immunosuppressive agents based on their associated risk of PML.
  • To support informed decision-making for physicians and patients regarding the risks and benefits of immunosuppressive therapies.

Main Methods:

  • Review and synthesis of existing literature on PML and immunosuppressive therapies.
  • Development of a risk stratification framework for immunosuppressive agents concerning PML.
  • Analysis of confounding factors and pathogenetic uncertainties.

Main Results:

  • Identification of PML as a serious complication of certain immunosuppressive treatments.
  • Establishment of a proposed categorization system for immunosuppressive drugs based on PML risk.
  • Highlighting the need for improved understanding of PML pathogenesis.

Conclusions:

  • A structured risk categorization can aid in managing PML risk associated with immunosuppressive therapies.
  • Informed decision-making is crucial for balancing the benefits of immunosuppression against the risk of PML.
  • Further research into PML pathogenesis is needed to refine risk assessment and management strategies.