Alzheimer's disease and HIV associated dementia related genes: I. location and function.

Alzheimer's disease (AD), the most common cause of dementia, has few clinical similarities to HIV-1-associated dementia (HAD). However, genes were identified related among these dementias. Discovering correlations between gene function, expression, and structure in the human genome continues to aid in understanding the similarities between pathogenesis of these two dementing disorders. The current work attempts to identify relationships between these dementias in spite of their clinical differences, based on genomic structure, function, and expression. In this comparative study, the NCBI Entrez Genome Database is used to detect these relationships. This approach serves as a model for future diagnosis and treatment in the clinical arena as well as suggesting parallel pathways of disease mechanisms. Identifying a correlation among expression, structure, and function of genes involved in pathogenesis of these dementing disorders, may assist to understand better their interaction with each other and the human genome

Neuronal and astrocytic interactions modulate brain endothelial properties during metabolic stresses of in vitro cerebral ischemia

Neurovascular and gliovascular interactions significantly affect endothelial phenotype. Physiologically, brain endothelium attains several of its properties by its intimate association with neurons and astrocytes. However, during cerebrovascular pathologies such as cerebral ischemia, the uncoupling of neurovascular and gliovascular units can result in several phenotypical changes in brain endothelium. The role of neurovascular and gliovascular uncoupling in modulating brain endothelial properties during cerebral ischemia is not clear. Specifically, the roles of metabolic stresses involved in cerebral ischemia, including aglycemia, hypoxia and combined aglycemia and hypoxia (oxygen glucose deprivation and re-oxygenation, OGDR) in modulating neurovascular and gliovascular interactions are not known. The complex intimate interactions in neurovascular and gliovascular units are highly difficult to recapitulate in vitro. However, in the present study, we used a 3D co-culture model of brain endothelium with neurons and astrocytes in vitro reflecting an intimate neurovascular and gliovascular interactions in vivo. While the cellular signaling interactions in neurovascular and gliovascular units in vivo are much more complex than the 3D co-culture models in vitro, we were still able to observe several important phenotypical changes in brain endothelial properties by metabolically stressed neurons and astrocytes including changes in barrier, lymphocyte adhesive properties, endothelial cell adhesion molecule expression and in vitro angiogenic potential

Heerfordt’s Syndrome : An interesting and under-recognised manifestation of sarcoidosis

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Antiphospholipid antibodies: Paradigm in transition

OBJECTIVES: This is a critical review of anti-phospholipid antibodies (aPL). Most prior reviews focus on the aPL syndrome (APS), a thrombotic condition often marked by neurological disturbance. We bring to attention recent evidence that aPL may be equally relevant to non-thrombotic autoimmune conditions, notably, multiple sclerosis and ITP. ORGANIZATION: After a brief history, the recent proliferation of aPL target antigens is reviewed. The implication is that many more exist. Theories of aPL in thrombosis are then reviewed, concluding that all have merit but that aPL may have more diverse pathological consequences than now recognized. Next, conflicting results are explained by methodological differences. The lupus anticoagulant (LA) is then discussed. LA is the best predictor of thrombosis, but why this is true is not settled. Finally, aPL in non-thrombotic disorders is reviewed. CONCLUSION: The current paradigm of aPL holds that they are important in thrombosis, but they may have much wider clinical significance, possibly of special interest in neurology

Peripheral blood biomarkers in multiple sclerosis.

Multiple sclerosis is the most common autoimmune disorder affecting the central nervous system. The heteroge-neity of pathophysiological processes in MS contributes to the highly variable course of the disease and unpre-dictable response to therapies. The major focus of the research on MS is the identification of biomarkers inbiologicalfluids, such as cerebrospinalfluid or blood, to guide patient management reliably. Because of the diffi-culties in obtaining spinalfluid samples and the necessity for lumbar puncture to make a diagnosis has reduced,the research of blood-based biomarkers may provide increasingly important tools for clinical practice. However,currently there are no clearly established MS blood-based biomarkers. The availability of reliable biomarkerscould radically alter the management of MS at critical phases of the disease spectrum, allowing for interventionstrategies that may prevent evolution to long-term neurological disability. This article provides an overview ofthis researchfield and focuses on recent advances in blood-based biomarker researc

Evidence of platelet activation in multiple sclerosis

This is an Open Access article distributed under the terms of the Creative Commons Attribution Licens

Old and New Concepts in Brain Death: A Medico-Legal Overview

Although brain death has been extensively dealt within the contemporary literature, there does exist some ambiguities regarding its definition, clinical criteria, ethical and religious perspectives. The neurological criteria helped in subduing the much talked about issues of whole brain death and brainstem death to a greater extent, but the recently introduced cardiac or circulation death made the issue of brain death more complicated and indeed a conundrum. We would touch upon brain death issues since the terminology was initially introduced till the present day when the cardiac death connivingly made its way as a means of organ procurement in the so called dead patients. This review article is the authors' own perception and understanding of the conundrum of brain death, and should not be misinterpreted as a narrative or a systematic review of the subject. In conclusion, this review aims at filling the void that exists about the criteria for brain death in the contemporary literature

Old and New Concepts in Brain Death: A Medico-Legal Overview

Although brain death has been extensively dealt within the contemporary literature, there does exist some ambiguities regarding its definition, clinical criteria, ethical and religious perspectives. The neurological criteria helped in subduing the much talked about issues of whole brain death and brainstem death to a greater extent, but the recently introduced cardiac or circulation death made the issue of brain death more complicated and indeed a conundrum. We would touch upon brain death issues since the terminology was initially introduced till the present day when the cardiac death connivingly made its way as a means of organ procurement in the so called dead patients. This review article is the authors' own perception and understanding of the conundrum of brain death, and should not be misinterpreted as a narrative or a systematic review of the subject. In conclusion, this review aims at filling the void that exists about the criteria for brain death in the contemporary literature

Use of Promethazine and Meperidine as Premedicants in Asthmatics before Initiation of Surgery: An Interim Report

Patients with bronchial asthma usually land up for surgery and pose a significant challenge as far as their anesthetic management is concerned. Most of these patients either take medicines or else are in a comparatively controlled state. Different protocols have been suggested for such cases such as corticosteroids, long-term β2 agonists, leukotriene receptor antagonists and theophylline sustained-release preparations.&nbsp