Nerve Tissue Proteins

Publication Title: 
The Journal of Pharmacology and Experimental Therapeutics

Dectin-1 is the primary pattern recognition receptor for fungal glucans. Dectin-1 mediates the internalization and biological response to glucans. We examined the effect of i.v. or i.p. glucan phosphate (GP) administration on Dectin-1 membrane expression in murine peripheral blood leukocytes, splenocytes, bone marrow, and peritoneal cells from 3 h to 10 days after injection. Circulating leukocytes were also examined for uptake and internalization of glucans from the blood.

Author(s): 
Ozment-Skelton, Tammy R.
Goldman, Matthew P.
Gordon, Siamon
Brown, Gordon D.
Williams, David L.
Publication Title: 
Brain Research

Acidification, which occurs in some pathological conditions, such as ischemia and hypoxia often induces neurotoxicity. The activation of acid-sensing ion channels (ASICs), which are highly permeable to calcium, has been considered the main target responsible for calcium overload in ischemic/hypoxic brain. However, the influence of extracellular proton on GABAergic synaptic transmission is not well understood.

Author(s): 
Zhou, Chunyi
Xiao, Cheng
Deng, Chunyu
Hong Ye, Jiang
Publication Title: 
Progress in Neurobiology

Transcriptional dysregulation in Huntington's disease (HD) is a well documented and broadly studied phenomenon. Its basis appears to be in huntingtin's aberrant protein-protein interactions with a variety of transcription factors. The development of therapeutics targeting altered transcription, however, faces serious challenges. No single transcriptional regulator has emerged as a primary actor in HD. The levels of literally hundreds of RNA transcripts are altered in affected cells and it is uncertain which are most relevant.

Author(s): 
Kazantsev, Aleksey G.
Hersch, Steven M.
Publication Title: 
PloS One

Huntington's disease (HD) is caused by a dominant polyglutamine expansion within the N-terminus of huntingtin protein and results in oxidative stress, energetic insufficiency and striatal degeneration. Copper and iron are increased in the striata of HD patients, but the role of these metals in HD pathogenesis is unknown. We found, using inductively-coupled-plasma mass spectroscopy, that elevations of copper and iron found in human HD brain are reiterated in the brains of affected HD transgenic mice.

Author(s): 
Fox, Jonathan H.
Kama, Jibrin A.
Lieberman, Gregory
Chopra, Raman
Dorsey, Kate
Chopra, Vanita
Volitakis, Irene
Cherny, Robert A.
Bush, Ashley I.
Hersch, Steven
Publication Title: 
Brain Research

Estrogen is a powerful neuroprotective agent with the ability to induce trophic and antiapoptotic genes. However, concerns about negative overall health consequences of estrogen replacement after menopause have led to the adoption of other strategies to obtain estrogen's benefits in the brain, including the use of selective estrogen receptor modulators, high soy diets, or isoflavone supplements. This study sought to determine the ability of a high soy diet to induce neuroprotective gene expression in the female rat brain and compare the actions of soy with estrogen.

Author(s): 
Lovekamp-Swan, Tara
Glendenning, Michele L.
Schreihofer, Derek A.
Publication Title: 
The Journal of Neuroscience: The Official Journal of the Society for Neuroscience

Environmental and genetic factors, notably ApoE4, contribute to the etiology of late-onset Alzheimer's disease (LOAD). Reduced mRNA and protein for an apolipoprotein E (ApoE) receptor family member, SorLA (LR11) has been found in LOAD but not early-onset AD, suggesting that LR11 loss is not secondary to pathology. LR11 is a neuronal sorting protein that reduces amyloid precursor protein (APP) trafficking to secretases that generate beta-amyloid (Abeta). Genetic polymorphisms that reduce LR11 expression are associated with increased AD risk.

Author(s): 
Ma, Qiu-Lan
Teter, Bruce
Ubeda, Oliver J.
Morihara, Takashi
Dhoot, Dilsher
Nyby, Michael D.
Tuck, Michael L.
Frautschy, Sally A.
Cole, Greg M.
Publication Title: 
Nature Neuroscience

Synaptic dysfunction caused by oligomeric assemblies of amyloid-beta peptide (Abeta) has been linked to cognitive deficits in Alzheimer's disease. Here we found that incubation of primary cortical neurons with oligomeric Abeta decreases the level of phosphatidylinositol-4,5-bisphosphate (PtdIns(4,5)P2), a phospholipid that regulates key aspects of neuronal function. The destabilizing effect of Abeta on PtdIns(4,5)P2 metabolism was Ca2+-dependent and was not observed in neurons that were derived from mice that are haploinsufficient for Synj1.

Author(s): 
Berman, Diego E.
Dall'Armi, Claudia
Voronov, Sergey V.
McIntire, Laura Beth J.
Zhang, Hong
Moore, Ann Z.
Staniszewski, Agniezka
Arancio, Ottavio
Kim, Tae-Wan
Di Paolo, Gilbert
Publication Title: 
Stroke; a Journal of Cerebral Circulation

BACKGROUND AND PURPOSE: Ginkgo biloba extracts are now prescribed in several countries for their reported health benefits, particularly for medicinal properties in the brain. The standardized Ginkgo extract, EGb761, has been reported to protect neurons against oxidative stress, but the underlying mechanisms are not fully understood. METHODS: To characterize the oral consumption of EGb761 in transient ischemia, we performed the middle cerebral artery occlusion (MCAO) filament model in wild-type and heme oxygenase 1 (HO-1) knockouts.

Author(s): 
Saleem, Sofiyan
Zhuang, Hean
Biswal, Shyam
Christen, Yves
Doré, Sylvain
Publication Title: 
The Journal of Neuroscience: The Official Journal of the Society for Neuroscience

Preventing and reversing opioid dependence continues to be a clinical challenge and underlying mechanisms of opioid actions remain elusive. We report that matrix metalloproteinase-9 (MMP-9) in the spinal cord contributes to development of physical dependence on morphine. Chronic morphine exposure and naloxone-precipitated withdrawal increase activity of spinal MMP-9. Spinal inhibition or targeted mutation of MMP-9 suppresses behavioral signs of morphine withdrawal and the associated neurochemical alterations.

Author(s): 
Liu, Wen-Tao
Han, Yuan
Liu, Yue-Peng
Song, Angela A.
Barnes, Beth
Song, Xue-Jun
Publication Title: 
International Journal of Molecular Medicine

We previously reported that PMI-5011, an ethanolic extract of Artemisia dracunculus L., alleviates peripheral neuropathy in high fat diet-fed mice, a model of prediabetes and obesity developing oxidative stress and pro-inflammatory changes in the peripheral nervous system. This study evaluated PMI-5011 on established functional, structural, and biochemical changes associated with Type I diabetic peripheral neuropathy.

Author(s): 
Watcho, Pierre
Stavniichuk, Roman
Tane, Pierre
Shevalye, Hanna
Maksimchyk, Yury
Pacher, Pal
Obrosova, Irina G.

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