• 제목/요약/키워드: Neurodegenerative Disorders

검색결과 238건 처리시간 0.028초

BETA-AMYLOID INDUCES OXIDATIVE AND/OR NITRATIVE PC12 CELL DEATH: POSSIBLE INVOLVEMENT OF INFLAMMATORY CASCADES

  • Jang, Jung-Hee;Surh, Young-Joon
    • 한국독성학회:학술대회논문집
    • /
    • 한국독성학회 2002년도 Current Trends in Toxicological Sciences
    • /
    • pp.94-94
    • /
    • 2002
  • Oxidative stress induced by reactive oxygen and/or nitrogen species has been considered as a major cause of cellular injuries in a variety of neurodegenerative disorders including Alzheimer's disease (AD). Inflammatory as well as oxidative tissue damage has been implicated in pathophysiology of AD, and non-steroidal anti-inflammatory drugs have been reported to have beneficial effects in the treatment or prevention of AD.(omitted)

  • PDF

BETA-AMYLOID INDUCES OXIDATIVE AND/OR NITRATIVE PC12 CELL DEATH VIA PRO-INFLAMMATORY MECHANISMS

  • Jang, Jung-Hee;Surh, Young-Joan
    • 한국독성학회:학술대회논문집
    • /
    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
    • /
    • pp.115-115
    • /
    • 2001
  • Oxidative stress induced by reactive oxygen and/or nitrogen species has been considered as a major cause of cellular injuries in a variety of neurodegenerative disorders including Alzheimers disease (AD). Inflammatory as well as oxidative tissue damage has been associated with pathophysiology of AD, and non-steroidal anti-inflammatory drugs have been reported to have beneficial effects in the treatment or prevention of AD.(omitted)

  • PDF

Neurodegenerative Dementias: A Brief Review

  • Sin, Mo-Kyung;Khemani, Pravin
    • Journal of Korean Biological Nursing Science
    • /
    • 제22권3호
    • /
    • pp.172-175
    • /
    • 2020
  • Purpose: The purpose of this paper is to provide nurses with a concise review on neurodegenrative dementias. This review includes pathophysiology, clinical course, and tips on management of dementias from Alzheimer's disease (AD), Parkinson disease (PD) and lewy body dementia (LBD). Considering increasing numbers of dementia cases among older adults, nurses who are cognizant about dementia care are instrumental in maximizing daily activities and quality of life of patients with cognitive impairment and dementia.

15-Deoxy-Δ12,14-Prostaglandin J2 Protects Against Nitrosative Pc12 Cell Death Through Up-Regulation of Intracellular Glutathione Level

  • Lim, So-Young;Jang, Jung-Hee;Surh, Young-Joon
    • 한국독성학회:학술대회논문집
    • /
    • 한국독성학회 2003년도 추계학술대회
    • /
    • pp.189-189
    • /
    • 2003
  • Recent studies suggest that inflammatory events are implicated in a variety of human diseases including cancer and neurodegenerative diseases. It has been reported that expression of inducible cyclooxygenase (COX) and nitric oxide (NO) synthase and subsequent production of prostaglandins (PG)s and NO, respectively are elevated in many inflammatory disorders.(omitted)

  • PDF

DIFFERENTIAL ROLES OF PROSTAGLANDIN E$_2$ AND 15-DEOXY-Δ12,14-PGJ$_2$ IN THE NITROSATIVE PC12 CELL DEATH

  • Lim, So-Young;Jang, Jung-Hee;Na, Hye-Kyung;Surh, Young-Joon
    • 한국독성학회:학술대회논문집
    • /
    • 한국독성학회 2002년도 Molecular and Cellular Response to Toxic Substances
    • /
    • pp.187-187
    • /
    • 2002
  • Recent studies suggest that inflammatory events are implicated in a variety of human diseases including cancer and neurodegenerative diseases, and non-steroidal anti-inflammatory drugs have beneficial effects in treatment or prevention of these disorders.(omitted)

  • PDF

Augmentation of constitutive nf-$textsc{k}$b activation by bcl-2 in pc12 cells: implications for protection against oxidative stress

  • Jang, Jung-Hee;Surh, Young-Joon
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
    • /
    • pp.69.3-70
    • /
    • 2003
  • A substantial body of evidence indicates that reactive oxygen intermediates (ROIs) are implicated in pathogenesis of diverse human diseases, including cancer, diabetes and neurodegenerative disorders. Oxidative stress induced by ROIs often causes cell death via apoptosis that is regulated by a plenty of functional genes and their protein products. In the present work, we have investigated the role of bcl-2 in protecting against oxidative death induced by hydrogen peroxide in cultured rat pheochromocytoma (PC12) cells. (omitted)

  • PDF

Celecoxib Attenuates Nitric Oxide-Induced Apoptosis in PC12 Cells by Inhibiting AP-1 Activation and COX-2 Expression.

  • Li, Mei-Hua;Jang, Jung-Hee;Surh, Young-Joon
    • 대한약학회:학술대회논문집
    • /
    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
    • /
    • pp.143.2-144
    • /
    • 2003
  • Recent studies suggest that inflammatory events are implicated in a variety of ailments such as cancer and neurodegenerative diseases, and certain non-steroidal anti-inflammatory drugs have beneficial effects for the treatment or prevention of these disorders. Cyclooxygenase-2 (COX-2), the rate-limiting enzyme in the prostaglandin (PG) synthesis, is induced by various pro-inflammatory stimuli including nitric oxide (NO) and has been reported to cause and/or aggravate neuronal cell death. (omitted)

  • PDF

PIWI Proteins and piRNAs in the Nervous System

  • Kim, Kyung Won
    • Molecules and Cells
    • /
    • 제42권12호
    • /
    • pp.828-835
    • /
    • 2019
  • PIWI Argonaute proteins and Piwi-interacting RNAs (piRNAs) are expressed in all animal species and play a critical role in cellular defense by inhibiting the activation of transposable elements in the germline. Recently, new evidence suggests that PIWI proteins and piRNAs also play important roles in various somatic tissues, including neurons. This review summarizes the neuronal functions of the PIWI-piRNA pathway in multiple animal species, including their involvement in axon regeneration, behavior, memory formation, and transgenerational epigenetic inheritance of adaptive memory. This review also discusses the consequences of dysregulation of neuronal PIWI-piRNA pathways in certain neurological disorders, including neurodevelopmental and neurodegenerative diseases. A full understanding of neuronal PIWI-piRNA pathways will ultimately provide novel insights into small RNA biology and could potentially provide precise targets for therapeutic applications.

Oxidative Modification of Neurofilament-L by the Cytochrome c and Hydrogen Peroxide System

  • Kang, Jung-Hoon
    • Bulletin of the Korean Chemical Society
    • /
    • 제28권1호
    • /
    • pp.77-80
    • /
    • 2007
  • As neurofilament proteins are major cytoskeletal components of neuron, abnormality of neurofilament is proposed in brain with neurodegenerative disorders such as Parkinson's disease (PD). Since oxidative stress might play a critical role in altering normal brain proteins, we investigated the oxidative modification of neurofilament-L (NF-L) induced by the reaction of cytochrome c with H2O2. When NF-L was incubated with cytochrome c and H2O2, the protein aggregation was increased in cytochrome c and H2O2 concentrationsdependent manner. Radical scavengers, azide, formate and N-acetyl cysteine, prevented the aggregation of NFL induced by the cytochrome c/H2O2 system. The formations of carbonyl group and dityrosine were obtained in cytochrome c/H2O2-mediated NF-L aggregates. Iron specific chelator, desferoxamine, prevented the cytochrome c/H2O2 system-mediated NF-L aggregation. These results suggest that the cytochrome c/H2O2 system may be related to abnormal aggregation of NF-L which may be involved in the pathogenesis of PD and related disorders.

Antiapoptotic Fusion Protein Delivery Systems

  • Tan, Cheau Yih;Kim, Yong-Hee
    • Macromolecular Research
    • /
    • 제16권6호
    • /
    • pp.481-488
    • /
    • 2008
  • Apoptosis is a natural cell suicide mechanism to maintain homeostasis. However, many of the diseases encountered today are caused by aberrant apoptosis where excessive apoptosis leads to neurodegenerative disorders, ischemic heart disease, autoimmune disorders, infectious diseases, etc. A variety of antiapoptotic agents have been reported to interfere with the apoptosis pathway. These agents can be potential drug candidates for the treatment or prevention of diseases caused by dysregulated apoptosis. Obviously, world-wide pharmaceutical and biotechnology companies are gearing up to develop antiapoptotic drugs with some products being commercially available. Polymeric drug delivery systems are essential to their success. Recent R&D efforts have focused on the chemical or bioconjugation of antiapoptotic proteins with the protein transduction domain (PTD) for higher cellular uptake with antibodies for specific targeting as well as with polymers to enhance the protein stability and prolonged effect with success observed both in vivo and in vitro. All these different fusion antiapoptotic proteins provide promising results for the treatment of dysregulated apoptosis diseases.