نتایج جستجو برای: substantianigra
تعداد نتایج: 18 فیلتر نتایج به سال:
بیماری پارکینسون بعد از آلزایمر ، شایع ترین بیماری دژنراسیون به حساب می آید.بیماری پارکینسون برای اولین بار توسط دانشمند بریتانیایی دکتر جیمز پارکینسون در سال ???? میلادی توصیف شد. هنوز اتیولوژی این بیماری شناسایی نشده است ولی از نظر پاتولوژی این اختلال هنگامی رخ می دهد که نواحی خاصی از مغز توانایی خود را در تولید دوپامین از دست می دهند در سال1960 نشان داده شده که بیماری پارکینسون ناشی از آسیب ...
Tyrosine hydroxylase, monoamine oxidase and aldehyde dehydrogenase all form oxygen radicals as part of their mechanisms of action. These oxygen radicals damage dopaminergic neurons in the substantianigra of the midbrain and cause them to die by a process of necrosis or apoptosis. Oxygen radicals quickly abstract hydrogen from DNA forming DNA radicals and causing DNA fragmentation, activation of...
Parkinson’s disease (PD) is a neurodegenerative disorder characterized by the development of rigidity, resting tremors and postural instability. Recently, the focus of PD’s treatment has shifted towards herbal medicines. Mucuna pruriens (Mp) and Withania somnifera (Ws) are traditional herbal medicines known to have neuro-protective effects due to the L-DOPA present in Mp seed powder and withano...
Parkinson's disease (PD) is a neurological disorder characterized by degeneration of nigrostriatal dopaminergic (DAergic) system. Present treatment targeting to DAergic system solely ameliorated the symptoms but failed to retard the DAergic neuron degeneration, therefore new therapeutic methods aiming at preventing or delaying the neurodegenerative process are urgently needed. In the present st...
To date, the therapeutic strategy against cognitive impairment in Parkinson's disease (PD) is still not in satisfaction level and requires novel effective intervention. Based the oxidative stress reduction and cognitive enhancement induced by laser acupuncture at HT7, the beneficial effect of laser acupuncture at HT7 against cognitive impairment in PD has been focused. In this study, we aimed t...
T-lymphocytes have been previously implicated in protecting dopaminergic neurons in the substantianigra from induced cell death. However, the role of T-cells in neurodegenerative models such as Parkinson's disease (PD) has not been fully elucidated. To examine the role of T-lymphocytes on motor behavior in the 6-hydroxydopamine (6-OHDA) unilateral striatal partial lesion PD rat model, we assess...
Backgrounds and Purpose: Multiple system atrophy (MSA) is mainly a sporadic progressive neurodegenerative disease of unknown etiology. Typical histological findings of MSA are observed in the striatum, substantianigra, olivopontocerebellar pathways, the intermediolateral cell columns of the spinal cord, and the cerebellum. Similar findings have also been described in motor and supplementary mot...
Parkinson’s disease (PD) is the result of the degeneration of nigrostriatal dopamine neurons and loss of striatal tyrosine hydroxylase and dopamine. The cause is unknown. Studies have shown that fetal exposures to toxins make the nigrostriatal dopamine neurons vulnerable and that later toxic challenges and/or the wear-and-tear of aging cause the already vulnerable neurons to succumb, and produc...
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