Еще один тип антител, дающих иногда нарушения психики
#1Слушал подкаст журнала Neurology, случайно “выловил” упоминание еще одного расстройства, приводящего иногда, подобно анти-NMDA-рецепторному энцефалиту, к нарушениям в психике. Там в конце дали анонс про некие “VGKC antibodies”.. Поиск навскидку, открытая статья в Nature (больше сейчас не могу, чувствую себя муторно: скованность в левом плече"жар в голове" и другие спецэффекты при напряжении мозга.. муторно, как при простуде):
A case of voltage-gated potassium channel antibody-related limbic encephalitis
A 56-year-old man presented to hospital with a 6-month history of recurrent episodes of altered behavior that lasted for a few days at a time, occurring every 2–3 weeks. He also experienced ‘odd’ episodes that lasted seconds to a few minutes, which were characterized by the sudden onset of disrupted speech and complex quasi-purposeful stereotyped movements, with a startled, vague appearance on his face. Initially, these episodes occurred weekly, but they later progressed to become a daily occurrence. The patient had become apathetic and uninterested in his family, and he uncharacteristically now spent most of his time in bed. During his episodes of altered behavior, he would be unable to recall his occupation, and would give sudden outbursts of expletives. He had no relevant past medical history such as risk factors for malignancy, and no relevant family history. General and physical neurological examinations were unremarkable, as was bedside cognitive testing during his normal state. Initial investigations included a brain MRI scan with fluid-attenuated inversion-recovery (FLAIR) and diffusion-weighted sequences, which was found to be normal, and a 24-h electroencephalogram (EEG). During the EEG, the patient experienced one of his odd episodes, but no associated neurophysiological evidence of a seizure was observed, making a diagnosis of a seizure disorder unlikely—although this possibility was not completely excluded. He was therefore referred to the psychiatric department with a tentative diagnosis of pseudoseizures (nonepileptic attack disorder). In-patient observation over a period of 2 months revealed that the patient was becoming increasingly confused, and that he confabulated memories. For instance, he stated one day that he had met Richard Branson in the hospital foyer, and that he was being transferred to various locations within the hospital. He was uncharacteristically hostile, and experienced paranoid delusions concerning staff members. He also had features of thought disorder with thought derailment, TANGENTIALITY and PRESSURE OF SPEECH. During this extensive period of observation, no abnormal sleep behavior was observed apart from insomnia. He drank water excessively (4–6 l/day) and continued to conduct his business from his hospital bed, often writing lengthy but confused letters. During a neurological consultation on the psychiatry ward, he experienced a clear-cut focal seizure (see Supplementary Video online) with flushing and altered consciousness, focal movements and postictal confusion. A repeat EEG was undertaken, during which he again experienced a more florid odd episode. This demonstrated the presence of spike and wave profiles, thus confirming the presence of seizures.
Интересный случай описан - ни ЭЭГ, ни мониторинг ЭЭГ первоначально не показали у этого 56-летнего пациента эпи-активности, и его перевели в психиатрическое отделение. Развились нарушения мышления, соскальзывание и т.п. И лишь через 2 месяца всплыли острые приступы и явные нарушения ЭЭГ.
Видео:
Supplementary Video (wmv 14 MB)
Video clip of patient experiencing focal seizure