在aquaporin-4-IgG阳性 (AQP4-IgG+) NMOSD中的级联标志
Luigi Bonan1, Federico Camilli2, Marcello Bombardi1
1Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy.
概括
级联标志,曾经认为是特定于神经贝切特的,可以模仿Aquaporin-4 IgG阳性神经omyelitis光谱障碍 (NMOSD) 中的病变. 这种成像发现可能会延迟NMOSD患者的诊断和治疗.
科学领域:
- 神经免疫学 神经免疫学
- 神经辐射学神经辐射学
- 神经学 神经学
背景情况:
- 布标志在历史上被认为是神经贝赫塞特病的病理标志.
- 在视神经炎 (NMO) 中,二脑半脑病变在2015年之前未被充分识别.
- 当前的诊断标准承认这些特定的损伤局部.
研究的目的:
- 报告一个Aquaporin-4IgG阳性神经omyelitis光学谱障碍 (NMOSD) 的病例.
- 为了突出描绘模仿级联符号的成像发现所带来的诊断挑战.
主要方法:
- 一个 AQP4-IgG+ NMOSD 患者的病例报告.
- 脑损伤的磁共振成像 (MRI) 分析.
- 临床表现包括急性横侧髓炎和视神经炎.
主要成果:
- 这位患者出现了急性横向髓炎和双边视神经炎.
- 早期的大脑MRI显示了相交的二脑中脑层病变,类似于级联标志.
- 这种成像模式最初表明了除了NMOSD之外的差异诊断.
结论:
- 在MRI上的级联标志在AQP4-IgG+ NMOSD中可能会误导.
- 这种成像模仿可能会阻碍准确的差异诊断.
- 延迟诊断可能导致延迟启动适当的NMOSD治疗.
更多相关视频
09:29Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4
Published on: August 21, 2017
11.9K
09:40Isolation of Sensory Neurons of Aplysia californica for Patch Clamp Recordings of Glutamatergic Currents
Published on: July 10, 2013
12.8K
相关概念视频
Aquaporins
6.1K
Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
6.1K
Disorder of Water Balance
2.3K
Water balance disorders are medical conditions that occur when there is a deviation from the body's water volume or osmolarity, disrupting normal homeostasis and leading todehydration, hypotonic hydration, hyperhydration, edema, or water intoxication.
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
2.3K
Resting Membrane Potential
21.4K
The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...
21.4K
Endocrine Signaling
67.9K
Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
67.9K
Membrane Asymmetry Regulating Transporters
6.9K
Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
6.9K
Osmosis
10.4K
Osmosis is the movement of free water molecules through a semipermeable membrane. The water's concentration gradient across the membrane is inversely proportional to the solutes' concentration. Whereas diffusion transports material across membranes and within cells, osmosis transports only water across a membrane, and the membrane limits the diffusion of solutes in the water. Osmosis is a special case of diffusion.
Water, like other substances, moves from a high concentration of...
Water, like other substances, moves from a high concentration of...
10.4K
