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J Neuroimmunol. 1987 Jun;15(2):185-94.

Passive transfer of experimental autoimmune myasthenia gravis by monoclonal antibodies to the main immunogenic region of the acetylcholine receptor.


Experimental autoimmune myasthenia gravis (EAMG) was passively transferred to rats by injecting monoclonal antibodies (mAbs) directed at the main immunogenic region (MIR) of the nicotinic acetylcholine receptor (AChR). The MIR is located on the extracellular part of the AChR alpha-subunit. All four mAbs directed at the MIR which were tested were very efficient in inducing EAMG: within 2 days the rats became moribund or very weak and their muscle AChR content decreased to about 50% of normal. These mAbs are of two different IgG subclasses (IgG1 and IgG2a) and derived from rats immunized with AChR from either fish electric organs or mammalian muscles. One mAb directed at the extracellular side of the beta-subunit did not cause AChR loss or induce symptoms of EAMG. mAbs to the cytoplasmic side were, as expected, ineffective.

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