Context:We are going to face an epidemic of severe acute respiratory syndrome coronavirus (SARS-CoV-2) virus in our country. The main manifestation of this viral infection is respiratory and cardiovascular; however, up-to-date knowledge of its probable neurologic complications is highly needed. Evidence Acquisition: To provide up-to-date information on neurologic manifestation on coronaviruses, we concisely reviewed the neurologic manifestations and their complications. Using the keywords, coronavirus, corona, human coronaviruses (HCoVs), SARS, Middle East respiratory syndrome-related (MERS), coronavirus disease 2019 (COVID-19), manifestations, complications, and neurologic, all the relevant articles were retrieved from PubMed, reviewed, and critically analyzed. Results: Although the main clinical manifestation of human coronaviruses is respiratory involvement and the main cause of death is acute respiratory failure, extra respiratory manifestations such as neurologic findings have been reported. Fortunately, the neurologic manifestations in COVID-19 have not been reported yet. Conclusions: We need well-designed studies to monitor neurologic manifestations of COVID-19 in adults and children.
We reported an association between SARS‐CoV‐2 infection and Guillain–Barre syndrome (GBS). From 37 patients with GBS, previous SARS‐CoV‐2 clinical clues, including fever, cough, and diarrhea, were recorded in 18 patients. Among them, SARS‐CoV‐2 IgG was detected in seven patients, considered confirmed as cases. SARS‐CoV‐2 PCR was positive in just one patient. Although we found no increase in patient recruitment during the pandemic compared to previous years, our study indicated that SARS‐CoV‐2 is associated with poorer outcomes regarding GBS disability scale and hospital stay.
Currently, the use of blood irradiation for inactivating pathogenic microbes in infected blood products and preventing graft‐versus‐host disease (GVHD) in immune suppressed patients is greater than ever before. In these systems, dose distribution and uniformity are two important concepts that should be checked. In this study, dosimetry of the gamma chamber blood irradiator model Gammacell 3000 Elan was performed by several dosimeter methods including thermoluminescence dosimeters (TLD), PAGAT gel dosimetry, and Monte Carlo simulations using MCNP4C code. The gel dosimeter was put inside a glass phantom and the TL dosimeters were placed on its surface, and the phantom was then irradiated for 5 min and 27 sec. The dose values at each point inside the vials were obtained from the magnetic resonance imaging of the phantom. For Monte Carlo simulations, all components of the irradiator were simulated and the dose values in a fine cubical lattice were calculated using tally F6. This study shows that PAGAT gel dosimetry results are in close agreement with the results of TL dosimetry, Monte Carlo simulations, and the results given by the vendor, and the percentage difference between the different methods is less than 4% at different points inside the phantom. According to the results obtained in this study, PAGAT gel dosimetry is a reliable method for dosimetry of the blood irradiator. The major advantage of this kind of dosimetry is that it is capable of 3D dose calculation.PACS number: 87.53.Bn
Introduction: Vanishing white matter disease (VWM) is considered as one of the most frequent types of inherited childhood leukoencephalopathies. Various neurological and non-neurological manifestations have been reported in this type of leukodystrophy; however, seizures are rarely described in infantile type of VWM. Case Presentation: To patient is a 12 months old boy who experienced frequent seizures at 4th month of age. The seizures were resistant to anti-epileptic drugs and caused 3 periods of hospitalization. Magnetic resonance imaging (MRI) demonstrated demyelinating pattern and whole exome sequencing (WES) reported homozygous mutation (c.922G > A) in EIF2B2 gene in exon 8 leading to an amino-acid substitution (p.Val308Met). Conclusions: Infantile onset of vanishing white matter disease can be considered as one of few childhood leukodystrophies that are associated with early onset seizures.
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