scholarly journals Introductory Chapter: Mitochondrial Alterations and Neurological Disorders

Author(s):  
Stavros J. Baloyannis

This book provides clinical and supporting scientific background on a diverse group of neurological disorders in an expanding field of neurology, that of neuroimmunology. It includes chapters on multiple sclerosis and related disorders in adults and children, neuromyelitis optica spectrum disorder, Guillain-Barré syndrome, chronic inflammatory deymyelinating polyradiculoneuropathy and variants, immune-mediated disorders of the neuromuscular junction, inflammatory myopathies, paraneoplastic disorders and autoimmune encephalitities, and neurologic manifestations of systemic immune-mediated diseases. In addition there is an introductory chapter dealing with basic of immunology and another on mechanisms of action of therapies used in neuroimmunologic disorders. The clinical chapters cover epidemiology, pathology, pathogenesis, and pathophysiology of the different diseases along with clinical presentation, diagnostic testing, differential diagnosis, and treatment.


Author(s):  
Danúbia da Cunha de Sá-Caputo ◽  
Mario Bernardo-Filho ◽  
Adérito Seixas ◽  
Redha Taiar


Author(s):  
Odell T. Minick ◽  
Hidejiro Yokoo

Mitochondrial alterations were studied in 25 liver biopsies from patients with alcoholic liver disease. Of special interest were the morphologic resemblance of certain fine structural variations in mitochondria and crystalloid inclusions. Four types of alterations within mitochondria were found that seemed to relate to cytoplasmic crystalloids.Type 1 alteration consisted of localized groups of cristae, usually oriented in the long direction of the organelle (Fig. 1A). In this plane they appeared serrated at the periphery with blind endings in the matrix. Other sections revealed a system of equally-spaced diagonal lines lengthwise in the mitochondrion with cristae protruding from both ends (Fig. 1B). Profiles of this inclusion were not unlike tangential cuts of a crystalloid structure frequently seen in enlarged mitochondria described below.


Author(s):  
Richard L. Klein ◽  
Åsa K. Thureson-Klein ◽  
Harihara M. Mehendale

KeponeR (decachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalen-2-one) is an insecticide effective against ants and roaches. It can cause severe toxicity in fishes, birds, rodents and man. Prominent effects include hepatic lipid deposition and hypertrophy, impairment of reproductive capacity and neurological disorders. Mitochondrial oligomycin-sensitive Mg2+-ATPase is also inhibited. The present study is a preliminary investigation of tissue ultrastructural changes accompanying physiological signs of acute toxicity, which after two days treatment include: pronounced hypersensitivity and tremor, various degrees of anorexia and adipsia, and decreased weight gain.Three different series of adult male Sprague-Dawley rats (Charles River or CD-I) were treated by intubation with Kepone in corn oil at a dose of 50 mg per kg for 3 successive days or at 200 ppm in food for 8 days. After ether anesthesia, rats were immediately perfused via a cannula in the left ventricle with 4% p-formaldehyde and 0.5% glutaraldehyde in Millonig's phosphate buffer at pH 7.2 for 20-30 min at 22°C.


2020 ◽  
Vol 31 (2) ◽  
pp. 62-68
Author(s):  
Sara E. Holm ◽  
Alexander Schmidt ◽  
Christoph J. Ploner

Abstract. Some people, although they are perfectly healthy and happy, cannot enjoy music. These individuals have musical anhedonia, a condition which can be congenital or may occur after focal brain damage. To date, only a few cases of acquired musical anhedonia have been reported in the literature with lesions of the temporo-parietal cortex being particularly important. Even less literature exists on congenital musical anhedonia, in which impaired connectivity of temporal brain regions with the Nucleus accumbens is implicated. Nonetheless, there is no precise information on the prevalence, causes or exact localization of both congenital and acquired musical anhedonia. However, the frequent involvement of temporo-parietal brain regions in neurological disorders such as stroke suggest the possibility of a high prevalence of this disorder, which leads to a considerable reduction in the quality of life.


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