Arrow points the area of perivascular infiltration and asterisks mark the parenchymal swelling. Mind magnetic resonance imaging (MRI) showed considerable T2 hyperintense and gadolinium-enhancing periventricular and corpus callosum lesions. Serum aquaporin 4 antibody was positive 1:10,000 (normal value <1.5 titer), hence he was diagnosed with NMOSD. As a complication, patient developed mucormycotic pneumonia with cavitation, requiring thoracotomy precluding use of immunosuppressants. Gene screening shown a mutation in MT-ND4 gene encoding for NADH dehydrogenase 4 in mitochondrial complex 1. Eventually, he began a treatment with filgrastim, a G-CSF analog, in addition to intravenous immunoglobulins and prednisone. Patients NMOSD has been in remission without relapses, or coexistent infections ever since. == Conclusion == G-CSF is usually a polyfunctional cytokine with important immunomodulatory effects, which makes it an interesting therapeutic option when autoimmunity coexists with immunodeficiency and was used successfully in this case. Keywords:neuromyelitis optica spectrum disorder, immunodeficiency, autoimmunity, granulocyte-colony stimulating factor, immunomodulation == Case presentation == A 23-year-old man Dopamine hydrochloride presented initially with a focal onset seizure with impaired consciousness at age 12. Magnetic resonance imaging (MRI) of brain obtained at the time of presentation demonstrated a right temporal mass lesion that was surgically resected soon after the first hospital admission (Figures 1AC). Preliminary pathological statement raised the question of low grade glioneuronal tumor based on morphologically abnormal neuronal cells, however, detailed subsequent examination revealed perivascular lymphocytic infiltrates Dopamine hydrochloride in the meninges and cortex, with areas of dystrophic calcifications and gliosis, concluding that this lesion is due to an idiopathic inflammatory process (Figures 1DF). After the surgery, patient remained seizure-free and off any anti-seizure drugs. == Physique 1. == Post-operative magnetic resonance imaging (MRI) of brain with and without gadolinium and pathological findings at age 12.(A)FLAIR sequence.(B)T1 sequence.(C)T1 and gadolinium sequence (post lesion resection) with no evidence of contrast enhancement.(DF)Perivascular lymphocytic infiltrates in the meninges and the cortex. You will find geographic areas of dystrophic calcifications, cortical gliosis and degenerative changes in the white matter with cavitary features, and macrophage accumulation. Arrow points the area of perivascular infiltration and asterisks mark the parenchymal inflammation. Pathology images courtesy of Peter Pytel, MD, The University or college of Chicago. At age 18, the patient developed headaches, recurrent multifocal seizures, and non-convulsive status epilepticus. Repeat brain MRI showed multiple gadolinium-enhancing lesions including both hemispheres (Physique 2). Cerebrospinal fluid (CSF) analysis was unrevealing and non-indicative for a specific disease process. MR spectroscopy (MRS) analysis of one of the largest lesions detected a double lactate peak suggestive of a mitochondrial disease process (Physique 3). Combined Mito Genome Plus Panel (GeneDx) recognized a mutation in MT-ND4 gene encoding for NADH dehydrogenase 4 in mitochondrial complex 1 (m.11985 A > G, heteroplasmy 37%). At age 19, patient was also diagnosed with neuromyelitis optica spectrum disorder (NMOSD) after the patient developed left vision optic neuritis and tested seropositive for anti-aquaporin 4 (AQP4) antibody (1:10,000 titer) (Supplementary Table S1). == Physique 2. == MRI brain with and without gadolinium at age 18.(AC)Multifocal regions of white matter T2/FLAIR hyperintensity in both cerebral hemispheres and corpus callosum.(D)Gadolinium enhancement Rabbit Polyclonal to Mst1/2 in corpus callosum. == Physique 3. == MR spectroscopy of brain lesions at age 18.(A)Double lactate peaks in the Dopamine hydrochloride dominant T2/FLAIR hyperintense lesions of the corpus callosum and left cingulate gyrus.(B)Areas of MRS analysis. Over the following 2 years, the NMOSD relapsed on several occasions, requiring rescue treatments, including methylprednisolone, plasmapheresis and rituximab. It was also noted that the patient developed slowly progressive hypogammaglobulinemia, leukopenia, neutropenia and lymphopenia. These hematological changes preceded the use of immunotherapy but further worsened following a single administration of 1 1 gram of rituximab. Importantly, these changes continued relentlessly, despite discontinuation of the aforementioned therapies reaching the point of severe immunodeficiency, and he suffered several common and opportunistic infections. On one occasion, the patient developed mucormycotic pneumonia with cavitation requiring pulmonary lobectomy, precluding further use of rituximab and other immunosuppressants. By age 22, patient had permanent neurological deficits, including total visual loss in the left eye, right hemiparesis, and progression of lesion weight on brain MRI, without obvious immunotherapeutic options. == Case resolution == Given the positive anti-aquaporin 4 antibody test, recurrent episodes of optic neuritis and tumefactive brain lesions, the patient was diagnosed with NMOSD. The MRS findings and genetic screening suggested a possible comorbid mitochondrial complex 1 disorder, which complicated the course of the disease, and likely predisposed the patient to leukopenia, neutropenia, lymphopenia and hypogammaglobulinemia. Patient was treated just once with plasmapheresis and rituximab, but the.
Arrow points the area of perivascular infiltration and asterisks mark the parenchymal swelling
