この作品は、外務国際貿易（カナダ政府）、トロント大学のコンノート·ファンド、イノベーション、NSERC、Krembil財団と硬化、パーキンソンの信頼のためのカナダの財団の部門によってサポートされていました。

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著者らは、開示することは何もありません。

このプロトコルは高い病変成功率、低死亡率で、非常に再現性があるパーキンソン病の安定した片側6-OHDA-病変マウスモデル生成のための方法を説明します。 6-OHDA病変の手術の成功は容易に病変線条体27の&gt; 95％のドーパミンの枯渇を示す&gt; 70％ipsiversive回転と自発的な回転動作を測定することにより推定することができます。それが線条体ドーパミンレベル28の直接測定を?...

<table border="1" &gt;<tbody&gt;<tr &gt;<td<strong試薬の&gt;名前</strong</td&gt;<td<strong&gt;会社概要</strong</td&gt;<td<strong&gt;カタログ番号</strong</td&gt;<td<strong&gt;コメント（オプション）</strong</td&gt;</tr&gt;<tr &gt;<td&gt;デシプラミン塩酸</td&gt;<td&gt; Sigma-Aldrichは、オークビル、ON、カナダ</td&gt;<td&gt; D125</td&gt;<td&gt; 25mg/kg</td&gt;</tr&gt;<tr&gt;<td&gt;パージリン塩酸</td&gt;<td&gt; Sigma-Aldrichは、オークビル、ON、カナダ</td&gt;<td&gt; P8013</td&gt;<td&gt; 5mg/kgを</td&gt;</tr&gt;<tr&gt;<td&gt; 6-OHDAのHBr</td&gt;<td&gt; Sigma-Aldrichは、オークビル、ON、カナダ</td&gt;<td&gt; H116</td&gt;<td&gt; 3mgの/マウス</td&gt;</tr&gt;<tr&gt;<td&gt;定位フレーム</td&gt;<td&gt; Kopfは楽器、タハンガ、CA、アメリカ合衆国</td&gt;<td&gt;モデル900</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;マウスの耳カップ</td&gt;<td&gt; Kopfは楽器、タハンガ、CA、アメリカ合衆国</td&gt;<td&gt;モデル921頬骨のイヤーカップ</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;マウス切歯バー</td&gt;<td&gt; Kopfは楽器、タハンガ、CA、アメリカ合衆国</td&gt;<td&gt;モデル923B</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;マウス麻酔マスク</td&gt;<td&gt; Kopfは楽器、タハンガ、CA、アメリカ合衆国</td&gt;<td&gt;モデル923B</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;プライミングキット（250ミリリットル注射器を含む）</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; PRMKIT 81120</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; RN圧縮フィッティングキット（1ミリメートル）</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 55750から01</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<tdRN圧縮フィッティングキットから&gt; PEEKチューブ<
 (1/16<sup&gt; TH</sup&gt;インチ）</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 55751から01</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;デュアル小さなハブRNカプラ</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 55752から01</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;小さなハブRNアダプタにルアー</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 55753から01</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; 1ミリリットル25Sシリンジモデル7001KH</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 80100</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; * 6の33Gニードル（RN）パック。 。 45 &lt;°のベベルを使用してカスタム1インチ</td&gt;<td&gt;ハミルトン社、リノ、ネバダ州、アメリカ合衆国</td&gt;<td&gt; 7803から05</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;はさみ</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ。</td&gt;<td&gt; 14084から08</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;メス</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ</td&gt;<td&gt; 10003から12</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;メスの刃</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ</td&gt;<td&gt; 10035から20</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; Forcep</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ</td&gt;<td&gt; 11608から15</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; Hemostats</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ。</td&gt;<td&gt; 13004から14</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;イソフルラン</td&gt;<td&gt;アボット</td&gt;<td&gt; 02241315</td&gt;<td&gt;百分の2から3</td&gt;</tr&gt;<tr&gt;<td&gt; Suters（Vicryl 4.0）</td&gt;<td&gt; Syneture</td&gt;<td&gt; SS-683</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;滅菌器</td&gt;<td&gt;ファイン科学ツール、バンクーバー、BC、カナダ</td&gt;<td&gt; 18000から45</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;輸液ポンプ</td&gt;<td&gt;ハーバード装置</td&gt;<td&gt;博士2000分の22</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;針（27G）</td&gt;<td&gt;ベクトン·ディッキンソン</td&gt;<td&gt; 305109</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;針（25G）</td&gt;<td&gt;ベクトン·ディッキンソン</td&gt;<td&gt; 305127</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;シリンジ（1ミリリットル）</td&gt;<td&gt; BDシリンジ</td&gt;<td&gt; 309692</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;麻酔トロリー</td&gt;<td&gt; LEI医療</td&gt;<td&gt; M2000</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;バイトリル</td&gt;<td&gt; CDMV、セント·ヒヤシンス物語、QC</td&gt;<td&gt; 102207</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt;リドカイン</td&gt;<td&gt; CDMV、セント·ヒヤシンス物語、QC</td&gt;<td&gt; 3914</td&gt;<td&gt;</td&gt;</tr&gt;<tr&gt;<td&gt; Betadineソリューション</td&gt;<td&gt; CDMV、セント·ヒヤシンス物語、QC</td&gt;<td&gt; 19955</td&gt;<td&gt;</td&gt;</tr&gt;</tbody&gt;</table

development of a unilaterally-lesioned 6-ohda mouse model of parkinson's disease

パーキンソン病（PD）の一方的病変6 hyroxydopamine（6-OHDA） - 病変ラットモデルは、それが反復するで観察された大脳基底核回路と薬理学の変化をするので、パーキンソン症状の根底にあるメカニズムの理解を進める上で貴重であることが証明されているパーキンソン病患者の1-4。しかし、大脳基底核の主要な入力領域である線条体、内の出力経路の皮質-線条体シナプスで発生した正確な細胞および分子の変化は、とらえどころのないまま、これはパーキンソン病の症状の根底にある病理学的な異常が3を発生するサイトであると考えられている5。 PDでは、黒質 - 線条体経路の変性後に大脳基底核回路の変化のメカニズムを理解することが大幅に細菌人工染色体（BAC）マウスの開発促進によって駆動される過剰発現緑色蛍光タンパク質によって進められてきたそれらを分離して検討することができます8、：;：2線条体出力経路（EGFP-D2とEGFP-リパーゼA2a、間接的な経路EGFP-D1直接経路）の特定にはサインインしてください。たとえば、最近の研究では、パーキンソン病マウス9,10におけるシナプス可塑性の病理学的変化があることを示唆している。しかし、これらの研究は、若年マウスとパーキンソニズムの急性モデルを利用した。それは安定した6-OHDA病変を有する成人ラットでは説明した変更も、これらのモデルで発生するかどうかは不明である。他のグループが内側前脳束（MFB）をlesioning PDの安定した一方、病変6-OHDAの大人のマウスモデルを生成しようとしています、残念なことに、本研究では死亡率はわずか14％は21の手術を生き残ったと、非常に高かった日以上11。最近の研究は、低死亡率の両方で、イントラ黒質病変を生成したドーパミン作動性ニューロンの&gt; 80％の損失、L-DOPA誘発ジスキネジア11,12,13,14のしかし、式は変数であったこれらの研究インチPDの別の十分に確立されたマウスモデルでは、MPTP-病変マウス15である。このモデルは、潜在的な神経保護剤16の評価に有用であることが証明されたこのモデルは頻繁に運動障害を誘導するために失敗し、病変17の範囲の広い変動を示すように、それは、PDのメカニズムの基礎となる症状を理解するにはあまり適していながら、18 。 ここでは、安定した片側6-OHDA-病変マウス一貫して線条体ドーパミンの&gt; 95％の損失が発生するMFB（HPLCにより測定）に6-OHDAの直接投与によるPDのモデルと同様に、行動を生産を開発しました不均衡はPDのよく特徴付け片側6-OHDA-病変ラットモデルで観察された。 PDは、この新しく開発されたマウスモデルでは、パーキンソン症状の発生のメカニズムを理解する上で貴重なツ​​ールを証明します。

Watch this Scientific Journal Video about Development of a Unilaterally-lesioned 6-OHDA Mouse Model of Parkinson's Disease at JoVE.com

Development of a Unilaterally-lesioned 6-OHDA Mouse Model of Parkinson's Disease

マウスの内側前脳束の片側6-OHDAの病変を行うためのプロトコルが記述されています。このメソッドは、線条体ドーパミンと90.63の&gt; 95％の損失を示す生存動物の89％と低い死亡率（13.3％）±-4.02％病変の側に向かってipsiversive回転バイアスを持っています。

パーキンソン病の単方向、病変6-OHDAモデルマウスの開発

The unilaterally lesioned 6-hyroxydopamine (6-OHDA)-lesioned rat model of Parkinson's disease (PD) has proved to be invaluable in advancing our ...

development-unilaterally-lesioned-6-ohda-mouse-model-parkinson-s

Research

JoVE Journal

Medicine

50.9K ビュー.  University of Toronto at Scarborough. マウスの内側前脳束の片側6-OHDAの病変を行うためのプロトコルが記述されています。このメソッドは、線条体ドーパミンと90.63の> 95％の損失を示す生存動物の89％と低い死亡率（13.3％）±-4.02％病変の側に向かってipsiversive回転バイアスを持っています。

ビデオ: Development of a Unilaterally-lesioned 6-OHDA Mouse Model of Parkinson's Disease

MALDI Imaging Mass Spectrometry of Neuropeptides in Parkinson's Disease

MALDI imaging mass spectrometry (IMS) is a powerful approach that facilitates the spatial analysis of molecular species in biological tissue samples2 (Fig.1). A 12 &mu;m thin tissue section is covered with a MALDI matrix, which facilitates desorption and ionization of intact peptides and proteins that can be detected with a mass analyzer, typically using a MALDI TOF/TOF mass spectrometer. Generally hundreds of peaks can be assessed in a single rat brain tissue section. In contrast to commonly used imaging techniques, this approach does not require prior knowledge of the molecules of interest and allows for unsupervised and comprehensive analysis of multiple molecular species while maintaining high molecular specificity and sensitivity2. Here we describe a MALDI IMS based approach for elucidating region-specific distribution profiles of neuropeptides in the rat brain of an animal model Parkinson's disease (PD). 
PD is a common neurodegenerative disease with a prevalence of 1% for people over 65 of age3,4. The most common symptomatic treatment is based on dopamine replacement using L-DOPA5. However this is accompanied by severe side effects including involuntary abnormal movements, termed L-DOPA-induced dyskinesias (LID)1,3,6. One of the most prominent molecular change in LID is an upregulation of the opioid precursor prodynorphin mRNA7. The dynorphin peptides modulate neurotransmission in brain areas that are essentially involved in movement control7,8. However, to date the exact opioid peptides that originate from processing of the neuropeptide precursor have not been characterized. Therefore, we utilized MALDI IMS in an animal model of experimental Parkinson's disease and L-DOPA induced dyskinesia. 
MALDI imaging mass spectrometry proved to be particularly advantageous with respect to neuropeptide characterization, since commonly used antibody based approaches targets known peptide sequences and previously observed post-translational modifications. By contrast MALDI IMS can unravel novel peptide processing products and thus reveal new molecular mechanisms of neuropeptide modulation of neuronal transmission. While the absolute amount of neuropeptides cannot be determined by MALDI IMS, the relative abundance of peptide ions can be delineated from the mass spectra, giving insights about changing levels in health and disease. In the examples presented here, the peak intensities of dynorphin B, alpha-neoendorphin and substance P were found to be significantly increased in the dorsolateral, but not the dorsomedial, striatum of animals with severe dyskinesia involving facial, trunk and orolingual muscles (Fig. 5). Furthermore, MALDI IMS revealed a correlation between dyskinesia severity and levels of des-tyrosine alpha-neoendorphin, representing a previously unknown mechanism of functional inactivation of dynorphins in the striatum as the removal of N-terminal tyrosine reduces the dynorphin's opioid-receptor binding capacity9. This is the first study on neuropeptide characterization in LID using MALDI IMS and the results highlight the potential of the technique for application in all fields of biomedical research.

Dopamine replacement pharmacotherapy using L-DOPA is the most commonly used symptomatic treatment of Parkinson&#x2019;s disease, but is accompanied by side effects including involuntary abnormal movements, termed dyskinesia 1. Here, a protocol for MALDI imaging mass spectrometry is presented that detects changes in rat brain neuropeptide levels related to dyskinesia.

パーキンソン病における神経ペプチドのMALDIイメージングマススペクトロメトリー

MALDI imaging mass spectrometry (IMS) is a powerful approach that facilitates the spatial analysis of molecular species in biological tissue samples2 ...

医学

Skin Punch Biopsy Explant Culture for Derivation of Primary Human Fibroblasts

Tissues and cell lines derived from an individual with disease are ideal sources to study disease-related cellular phenotypes. Patient-derived fibroblasts in this protocol have been successfully used in the derivation of induced pluripotent stem cells to model disease1. Early passages of these fibroblasts can also be used for cell-based functional assays to study specific disease pathways, mechanisms2 and subsequent drug screening approaches. The advantage of the presented protocol over enzymatic procedures are 1) the reproducibility of the technique from small amounts of tissue derived from older patients, e.g. patients affected with Parkinson's disease, 2) the technically simple approach over more challenging methodologies using enzymatic treatments, and 3) the time consideration: this protocol takes 15-20 min and can be performed immediately after biopsy arrival. Enzymatic treatments can take up to 4 hr and have the problems of overdigestion, reduction of cell viability and subsequent attachment of cells when not handled properly. This protocol describes the dissection and preparation of a 4-mm human skin biopsy for derivation of a fibroblast culture and has a very high success rate which is important when dealing with patient-derived tissue samples. In this culture, keratinocytes migrate out of the biopsy tissue within the first week after preparation. Fibroblasts appear 7-10 days after the first outgrowth of keratinocytes. DMEM high glucose media supplemented with 20% FBS favors the growth of fibroblasts over keratinocytes and fibroblasts will overgrow the keratinocytes. After 2 passages keratinocytes have been diluted out resulting in relatively homogenous fibroblast cultures which expresses the fibroblast marker SERPINH1 (HSP-47). Using this approach, 15-20 million fibroblasts can be derived in 4-8 weeks for cell banking. The skin dissection takes about 15-20 min, cells are then monitored once a day under the microscope, and media is changed every 2-3 days after attachment and outgrowth of cells.

The fibroblast explant culture protocol from human skin punch biopsies is a technically robust and simple way to derive skin cells within 4-8 weeks for banking of about 15-20 million cells at a low passage number.

プライマリーヒト線維芽細胞の導出のために皮膚パンチ生検植文化

Tissues and cell lines derived from an individual with disease are ideal sources to study disease-related cellular phenotypes. Patient-derived fibroblasts ...

The Use of Primary Human Fibroblasts for Monitoring Mitochondrial Phenotypes in the Field of Parkinson's Disease

Parkinson's disease (PD) is the second most common movement disorder and affects 1% of people over the age of 60 1. Because ageing is the most important risk factor, cases of PD will increase during the next decades 2. Next to pathological protein folding and impaired protein degradation pathways, alterations of mitochondrial function and morphology were pointed out as further hallmark of neurodegeneration in PD 3-11.
After years of research in murine and human cancer cells as in vitro models to dissect molecular pathways of Parkinsonism, the use of human fibroblasts from patients and appropriate controls as ex vivo models has become a valuable research tool, if potential caveats are considered. Other than immortalized, rather artificial cell models, primary fibroblasts from patients carrying disease-associated mutations apparently reflect important pathological features of the human disease.
Here we delineate the procedure of taking skin biopsies, culturing human fibroblasts and using detailed protocols for essential microscopic techniques to define mitochondrial phenotypes. These were used to investigate different features associated with PD that are relevant to mitochondrial function and dynamics. Ex vivo, mitochondria can be analyzed in terms of their function, morphology, colocalization with lysosomes (the organelles degrading dysfunctional mitochondria) and degradation via the lysosomal pathway. These phenotypes are highly relevant for the identification of early signs of PD and may precede clinical motor symptoms in human disease-gene carriers. Hence, the assays presented here can be utilized as valuable tools to identify pathological features of neurodegeneration and help to define new therapeutic strategies in PD.

Fibroblasts from patients carrying mutations in Parkinson's disease-causing genes represent an easily accessible ex vivo model to study disease-associated phenotypes. Live cell imaging gives the opportunity to study morphological and functional parameters in living cells. Here we describe the preparation of human fibroblasts and subsequent monitoring of mitochondrial phenotypes.

パーキンソン病の分野におけるミトコンドリアの表現型を監視するための主要ヒト線維芽細胞の使用

Parkinson's disease (PD) is the second most  common movement disorder and affects 1% of people over the age of 60 1. Because ageing is  the most important ...

A Simple Method of Mouse Lung Intubation

A simple procedure to intubate mice for pulmonary function measurements would have several advantages in longitudinal studies with limited numbers or expensive animal. One of the reasons that this is not done more routinely is that it is relatively difficult, despite there being several published studies that describe ways to achieve it. In this paper we demonstrate a procedure that eliminates one of the major hurdles associated with this intubation, that of visualizing the trachea during the entire time of intubation. The approach uses a 0.5 mm fiberoptic light source that serves as an introducer to direct the intubation cannula into the mouse trachea. We show that it is possible to use this procedure to measure lung mechanics in individual mice over a time course of at least several weeks. The technique can be set up with relatively little expense and expertise, and it can be routinely accomplished with relatively little training. This should make it possible for any laboratory to routinely carry out this intubation, thereby allowing longitudinal studies in individual mice, thereby minimizing the number of mice needed and increasing the statistical power by using each mouse as its own control.

This paper describes a striaghforward and efficient method of intubating mice for pulmonary function measurements or pulmonary instillation, that allows the mice to recover and be studied at later times. The procedure involves an inexpensive fiberoptic light source that directly illuminates the trachea.

マウス肺挿管の簡単な方法

A  simple procedure to intubate mice for pulmonary function measurements would  have several advantages in longitudinal studies with limited numbers or  ...

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

Lipoxygenase (LOX) activity has been implicated in neurodegenerative disorders such as Alzheimer&#39;s disease, but its effects in Parkinson&#39;s disease (PD) pathogenesis are less understood. Gene-environment interaction models have utility in unmasking the impact of specific cellular pathways in toxicity that may not be observed using a solely genetic or toxicant disease model alone.&#160;To evaluate if distinct LOX isozymes selectively contribute to PD-related neurodegeneration, transgenic (i.e. 5-LOX and 12/15-LOX deficient) mice can be challenged with a toxin that mimics cell injury and death in the disorder.&#160;Here we describe the use of a neurotoxin, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), which produces a nigrostriatal lesion to elucidate the distinct contributions of LOX isozymes to neurodegeneration related to PD. The use of MPTP in mouse, and nonhuman primate, is well-established to recapitulate the nigrostriatal damage in PD.&#160;The extent of MPTP-induced lesioning is measured by HPLC analysis of dopamine and its metabolites and semi-quantitative Western blot analysis of striatum for tyrosine hydroxylase (TH), the rate-limiting enzyme for the synthesis of dopamine. To assess inflammatory markers, which may demonstrate LOX isozyme-selective sensitivity, glial fibrillary acidic protein (GFAP) and Iba-1 immunohistochemistry are performed on brain sections containing substantia nigra, and GFAP Western blot analysis is performed on striatal homogenates.&#160;This experimental approach can provide novel insights into gene-environment interactions underlying nigrostriatal degeneration and PD.

Lipoxygenase (LOX) isozymes can generate products that may increase or decrease neuroinflammation and neurodegeneration.&#160;A gene-environment interaction study could identify LOX isozyme-specific effects. Using the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) model of nigrostriatal damage in two LOX isozyme-deficient transgenic lines allows for comparison of the contribution of LOX isozymes on dopaminergic integrity and inflammation.

パーキンソン病における感受性メカニズムのマスク解除を行う遺伝子環境相互作用モデル

Lipoxygenase (LOX) activity has been implicated in neurodegenerative disorders such as Alzheimer&#39;s disease, but its effects in Parkinson&#39;s disease ...

Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation

Adaptive deep brain stimulation (aDBS) has the potential to improve the treatment of Parkinson&#39;s disease by optimizing stimulation in real time according to fluctuating disease and medication state. In the present realization of adaptive DBS we record and stimulate from the DBS electrodes implanted in the subthalamic nucleus of patients with Parkinson&#39;s disease in the early post-operative period. Local field potentials are analogue filtered between 3 and 47 Hz before being passed to a data acquisition unit where they are digitally filtered again around the patient specific beta peak, rectified and smoothed to give an online reading of the beta amplitude. A threshold for beta amplitude is set heuristically, which, if crossed, passes a trigger signal to the stimulator. The stimulator then ramps up stimulation to a pre-determined clinically effective voltage over 250 msec and continues to stimulate until the beta amplitude again falls down below threshold. Stimulation continues in this manner with brief episodes of ramped DBS during periods of heightened beta power.
Clinical efficacy is assessed after a minimum period of stabilization (5 min) through the unblinded and blinded video assessment of motor function using a selection of scores from the Unified Parkinson&#39;s Rating Scale (UPDRS). Recent work has demonstrated a reduction in power consumption with aDBS as well as an improvement in clinical scores compared to conventional DBS. Chronic aDBS could now be trialed in Parkinsonism.

Adaptive deep brain stimulation (aDBS) is effective for Parkinson&#8217;s disease, improving symptoms and reducing power consumption compared to conventional deep brain stimulation (cDBS). In aDBS we track a local field potential biomarker (beta oscillatory amplitude) in real time and use this to control the timing of stimulation.

アダプティブ脳深部刺激とパーキンソン病の防除

Adaptive deep brain stimulation (aDBS) has the potential to improve the treatment of Parkinson&#39;s disease by optimizing stimulation in real time ...

Establishment and Characterization of UTI and CAUTI in a Mouse Model

Urinary tract infections (UTI) are highly prevalent, a significant cause of morbidity and are increasingly resistant to treatment with antibiotics. Females are disproportionately afflicted by UTI: 50% of all women will have a UTI in their lifetime. Additionally, 20-40% of these women who have an initial UTI will suffer a recurrence with some suffering frequent recurrences with serious deterioration in the quality of life, pain and discomfort, disruption of daily activities, increased healthcare costs, and few treatment options other than long-term antibiotic prophylaxis. Uropathogenic Escherichia coli (UPEC) is the primary causative agent of community acquired UTI. Catheter-associated UTI (CAUTI) is the most common hospital acquired infection accounting for a million occurrences in the US annually and dramatic healthcare costs. While UPEC is also the primary cause of CAUTI, other causative agents are of increased significance including Enterococcus faecalis. Here we utilize two well-established mouse models that recapitulate many of the clinical characteristics of these human diseases. For UTI, a C3H/HeN model recapitulates many of the features of UPEC virulence observed in humans including host responses, IBC formation and filamentation. For CAUTI, a model using C57BL/6 mice, which retain catheter bladder implants, has been shown to be susceptible to E. faecalis bladder infection. These representative models are being used to gain striking new insights into the pathogenesis of UTI disease, which is leading to the development of novel therapeutics and management or prevention strategies.

The ability to model urinary tract infections (UTI) is crucial in order to be able to understand bacterial pathogenesis and spawn the development of novel therapeutics. This work&#8217;s goal is to demonstrate mouse models of experimental UTI and catheter associated UTI that recapitulate and predict findings seen in humans.

マウスモデルにおけるUTIとCAUTIの樹立とその性状

Urinary tract infections (UTI) are highly prevalent, a significant cause of morbidity and are increasingly resistant to treatment with antibiotics. ...

A Quick Phenotypic Neurological Scoring System for Evaluating Disease Progression in the SOD1-G93A Mouse Model of ALS

The SOD1-G93A transgenic mouse is the most widely used animal model of amyotrophic lateral sclerosis (ALS). At ALS TDI we developed a phenotypic screening protocol, demonstrated in video herein, which reliably assesses the neuromuscular function of SOD1-G93A mice in a quick manner. This protocol encompasses a simple neurological scoring system (NeuroScore) designed to assess hindlimb function. NeuroScore is focused on hindlimb function because hindlimb deficits are the earliest reported neurological sign of disease in SOD1-G93A mice. The protocol developed by ALS TDI provides an unbiased assessment of onset of paresis (slight or partial paralysis), progression and severity of paralysis and it is sensitive enough to identify drug-induced changes in disease progression. In this report, the combination of a detailed manuscript with video minimizes scoring ambiguities and inter-experimenter variability thus allowing for the protocol to be adopted by other laboratories and enabling comparisons between studies taking place at different settings. We believe that this video protocol can serve as an excellent training tool for present and future ALS researchers.

This video protocol describes a sensitive, reliable, and quick method for evaluating the neuromuscular deficits in a transgenic mouse model of amyotrophic lateral sclerosis.

ALSのSOD1-G93Aマウスモデルにおける疾患進行を評価するためのクイック表現型の神経学的スコアリングシステム

The SOD1-G93A transgenic mouse is the most widely used animal model of amyotrophic lateral sclerosis (ALS). At ALS TDI we developed a phenotypic screening ...

A Neonatal Mouse Spinal Cord Compression Injury Model

Spinal cord injury (SCI) typically causes devastating neurological deficits, particularly through damage to fibers descending from the brain to the spinal cord. A major current area of research is focused on the mechanisms of adaptive plasticity that underlie spontaneous or induced functional recovery following SCI. Spontaneous functional recovery is reported to be greater early in life, raising interesting questions about how adaptive plasticity changes as the spinal cord develops. To facilitate investigation of this dynamic, we have developed a SCI model in the neonatal mouse. The model has relevance for pediatric SCI, which is too little studied. Because neural plasticity in the adult involves some of the same mechanisms as neural plasticity in early life1, this model may potentially have some relevance also for adult SCI. Here we describe the entire procedure for generating a reproducible spinal cord compression (SCC) injury in the neonatal mouse as early as postnatal (P) day 1. SCC is achieved by performing a laminectomy at a given spinal level (here described at thoracic levels 9-11) and then using a modified Yasargil aneurysm mini-clip to rapidly compress and decompress the spinal cord. As previously described, the injured neonatal mice can be tested for behavioral deficits or sacrificed for ex vivo physiological analysis of synaptic connectivity using electrophysiological and high-throughput optical recording techniques1. Earlier and ongoing studies using behavioral and physiological assessment have demonstrated a dramatic, acute impairment of hindlimb motility followed by a complete functional recovery within 2 weeks, and the first evidence of changes in functional circuitry at the level of identified descending synaptic connections1.

This article describes a method for generating a reproducible spinal cord compression injury (SCI) in the neonatal mouse. The model provides an advantageous platform for studying mechanisms of adaptive plasticity that underlie spontaneous functional recovery.

新生児マウス脊髄圧縮損傷モデル

Spinal cord injury (SCI) typically causes devastating neurological deficits, particularly through damage to fibers descending from the brain to the spinal ...

Development of an Alpha-synuclein Based Rat Model for Parkinson's Disease via Stereotactic Injection of a Recombinant Adeno-associated Viral Vector

In order to study the molecular pathways of Parkinson&#39;s disease (PD) and to develop novel therapeutic strategies, scientific investigators rely on animal models. The identification of PD-associated genes has led to the development of genetic PD models. Most transgenic &#945;-SYN mouse models develop gradual &#945;-SYN pathology but fail to display clear dopaminergic cell loss and dopamine-dependent behavioral deficits. This hurdle was overcome by direct targeting of the substantia nigra with viral vectors overexpressing PD-associated genes. Local gene delivery using viral vectors provides an attractive way to express transgenes in the central nervous system. Specific brain regions can be targeted (e.g. the substantia nigra), expression can be induced in the adult setting and high expression levels can be achieved. Further, different vector systems based on various viruses can be used. The protocol outlines all crucial steps to perform a viral vector injection in the substantia nigra of the rat to develop a viral vector-based alpha-synuclein animal model for Parkinson&#39;s disease.

This manuscript describes how viral vector-mediated local gene delivery provides an attractive way to express transgenes in the central nervous system. The protocol outlines all crucial steps to perform a viral vector injection in the substantia nigra of the rat to develop a viral vector-based animal model for Parkinson's disease.

組換えアデノ随伴ウイルスベクターの定位注射を介して、パーキンソン病のα-シヌクレインベースのラットモデルの開発

In order to study the molecular pathways of Parkinson&#39;s disease (PD) and to develop novel therapeutic strategies, scientific investigators rely on ...