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7. Preface

Author

Narayanan, V. and Tharakan, T. John

Published
2021

14. Arterioectatic Spinal Angiopathy of Childhood: Clinical, Imaging, Laboratory, Histologic, and Genetic Description of a Novel CNS Vascular Pathology

Author

Abruzzo, T, van den Berg, R, Vadivelu, S, Hetts, SW, Dishop, M, Cornejo, P, Narayanan, V, Ramsey, KE, Coopwood, C, Herik, EG Medici-van den, Roosendaal, SD, Lawton, M, and Bernes, S

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Pediatric, Physical Injury - Accidents and Adverse Effects, Neurodegenerative, Rare Diseases, Traumatic Head and Spine Injury, Spinal Cord Injury, Neurosciences, Aetiology, 2.1 Biological and endogenous factors, Neurological, Angiography, Child, Humans, Magnetic Resonance Imaging, Retrospective Studies, Spinal Cord, Spinal Cord Diseases, Nuclear Medicine & Medical Imaging, Clinical sciences, Physical chemistry
Abstract

Pediatric patients with myelopathy expressing intradural spinal vascular ectasia without arteriovenous shunting were studied at four tertiary referral neuropediatric centers. Patients were identified by retrospective review of institutional records and excluded if spinal vascular pathology could be classified into a previously described category of spinal vascular malformation. Four patients meeting the study criteria were enrolled in the study. Clinical, magnetic resonance imaging, catheter-directed angiography, laboratory, histological and genetic data were analyzed to characterize the disease process and elucidate underlying pathomechanisms. Our study revealed a highly lethal, progressive multi-segmental myelopathy associated with a unique form of non-inflammatory spinal angiopathy featuring diffuse enlargement and tortuosity of spinal cord arteries, spinal cord hyperemia, and spinal cord edema (Arterioectatic Spinal Angiopathy of Childhood). The condition was shown to mimic venous congestive myelopathy associated with pediatric spinal cord arteriovenous shunts on MRI but to have distinct pathognomonic findings on catheter-directed angiography. Clinicopathological, genetic, and neuroimaging features, which are described in detail, closely overlap with those of mitochondrial disease.

Published
2022

33. New Amendment of VO2 Nanoparticles with Enhanced Photocatalytic and Antibacterial Activities.

Author

Gnanamoorthy, G., Yadav, Virendra Kumar, Jin, Jie, Munusamy, S., Narayanan, V., and Lu, Ziyang

Abstract

Vanadium dioxide (VO2) nanoleafs were prepared by the thermal decomposition method. The synthesized vanadium dioxide (VO2) nanomaterials have been experimentally proven with well-known structural phase orientation properties. Besides, this VO2 nanoleaf-like material was scrutinized with a wide range of analyses with discussions also more desirable like XRD (X-ray diffraction analysis), FT-IR (Fourier transform infrared spectroscopy analysis), SEM (scanning electron microscope), and DRS UV–visible spectroscopy. VO2 nanoleaf materials V = O, V–O–V, and V–O stretching vibrations of the functional groups were signified in FT-IR examinations. The varagu tree leaf-like morphology structure was identified by the SEM equipment and observed to the remarkable diameter ranges. VO2 nanoleaf material has been acquired for low bandgap energy with a recorded value at 3.3 eV so it was nominated by dye degradation applications. Additionally, VO2 nanocatalysts will be reported, and predictable results were highly esteemed for the new research commitments and suggested for future research prospectus. This synthetic approach will focus on less time, low concentration, and good formation of the morphological growth identifications respectively. The VO2 nanoleaf materials have admirable efficiencies underneath visible light illumination during Brilliant Green (BG) dye and improved antibacterial activity performances. [ABSTRACT FROM AUTHOR]

Published
2024
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