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22 protocols using gadolinium chloride

1

Pharmacological Modulation of Ion Channels

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All chemicals were dissolved in extracellular solution at the final concentration. For drug application, the bath solution was exchanged twice with the drug-containing solution using a syringe, resulting in a final exchange of the bath solution by about 90–95%. For prolonged drug application (>15 min) the bath solution was exchanged with a drug-containing solution several times. The following agents were used: CNQX (6-cyano-7-nitroquinoxaline-2,3-dione), D-APV (D-(2R)-amino-5-phosphonovaleric acid), riluzole (2-amino-6-(trifluoromethoxy)benzothiazole), flufenamic acid (FFA), 9-phenanthrol, gadolinium chloride, clemizole hydrochloride and ML204 (4-Methyl-2-(1piperidinyl)-quinoline; all Sigma); TTA-P2 (3,5-dichloro-N-[1-(2,2-dimethyl-tetrahydropyran-4-ylmethyl)-4-fluoro-piperidin-4-ylmethyl]-benzamide): Alomone Labs; gabazine (2-(3-Carboxypropyl)-3-amino-6-(4methoxyphenyl)pyridazinium bromide: Abcam).
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2

Calcium Signaling Pathway Modulation

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The chemical reagents used in this study are as follows: 100 μM nifedipine (Sigma-Aldrich, St. Louis, MO; N7634); 500 μM gadolinium chloride (Sigma-Aldrich, G7532); 10 μM SKF96365 (Sigma-Aldrich, S7809); 1 M EGTA (Sigma-Aldrich, E4378); 500 μM lanthanum chloride (Sigma-Aldrich, L4131); 2 μM ω-Agatoxin IVA (Tocris, Bristol, UK; 2799); 2 μM SNX 482 (Tocris, 2799); 10 μM ω-Conotoxin GVIA (Alomone Labs, C-300); 10 μM U0126 (Sigma-Aldrich, U120); 50 mM potassium chloride (Sigma-Aldrich, P3911); 100 nM AP24534 (Tocris, 4274); 25 μM trifluoperazine dihydrochloride (Sigma Aldrich, T8516).
The following plasmids were purchased from Addgene: pGP-CMV-GCaMP6s was a gift from Douglas Kim (Addgene plasmid # 40753)33 (link); pGP-CMV-GCaMP6s-CAAX was a gift from Tobias Meyer (Addgene plasmid # 52228)34 (link); AAV-CAG-GFP was a gift from Karel Svoboda (Addgene plasmid # 28014)35 (link). The generation procedures for ERK1-dTomato construct were described previously36 (link). AAV-CAG-GCaMP6s-CAAX was cloned by replacing the GFP sequence in the AAV-CAG-GFP vector with GCaMP6s-CAAX PCR amplicon flanked BamHI/HindIII restriction sites. pHelper, and pAAV-RC1 plasmids were purchased from Cell Biolabs. RaichuEV-HRas FRET biosensor was kindly gifted from Dr. M. Matsuda (Kyoto University).
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3

Extracellular and Patch-Clamp Solutions

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Standard extracellular solution contained (in mM): 140 NaCl, 5.4 KCl, 2 CaCl2, 1 MgCl2, 20 HEPES, 10 glucose (pH 7.4, 320–335 mOsm). For Ca2+ external solutions, CaCl2 was removed and the osmolarity was adjusted with sucrose. Patch electrodes contained (in mM): 140 Cs-methanesulphonate, 35 CsOH, 10 HEPES, 1 CaCl2, 11 EGTA, 2 TEA, (pH 7.25 adjusted with CsOH, 290–300 mOsm). 2-Aminoethoxydiphenyl borate (2-APB) was purchased from Calbiochem (San Diego, CA). Gadolinium chloride was purchased from Sigma. Monoclonal antibody TRPM7 was purchased from Abcam (cat:ab85016)
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4

Disruption of Malaria Liver-Stage Immunity

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Female BALB/cOlaHsd (BALB/c) mice 6 wk of age or older (Envigo, formally Harlan Laboratories, Bicester, U.K.) were immunized i.m. in the musculus tibialis with 108 infectious units of human adenovirus serotype 5 (HAd5) expressing model Ag TIP–enhanced GFP (eGFP) and at least 6 wk later boosted intradermally (i.d.) in the ear with 106 PFU of modified vaccinia Ankara (MVA) expressing TIPeGFP. In instances of failed sporozoite batches, the interval between HAd5 and MVA immunization was increased or mice were boosted a second time with 106 PFU of MVA. Cell transfers were always performed 10 d after MVA boost.
To disrupt MHC class I presentation (35 (link)) and block T cell function, mice were injected i.p. with 100 μl of 0.03 mg/ml FK-506 monohydrate (tacrolimus) (Sigma-Aldrich) to achieve an in vivo dose of 0.15 mg/kg. Due to time-restricted access at the animal facility, FK-506 was administered every morning and evening for the first 2 d at 0, 9, 24, and 32 h after sporozoite injection. For depletion of Kupffer cells, mice received 200 μl of clodronate or PBS liposomes (Clodronate.Liposomes.org) via the i.v. route for 2 d prior to sporozoite administration. Alternatively, phagocytic activity of Kupffer cells was inhibited by injection 10 mg/kg (100 μl of 2 mg/ml) gadolinium chloride (Sigma-Aldrich) the day prior to sporozoite injection (36 (link)).
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5

Investigating Neuropathic Pain Pathways

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We purchased capsaicin and complete Freund’s adjuvant (CFA), menthol, and gadolinium chloride from Sigma-Aldrich, siRNA from Origene, resiniferatoxin from LC Laboratories, and ProTx-II from Peptide institute, Inc (Osaka, Japan).
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6

Selective Inhibition of IP3 Receptors

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Xestospongin C, a selective IP3R blocker, was obtained from Cayman Chemical Company (MI, USA). Gadolinium chloride, Nifedipine, Ca2+ ionophore II – ETH 129, Na+- ionophore I - ETH-227 and the phospholipase C (PLC) inhibitor U-73122 were from Fluka Sigma-Aldrich (USA). All other chemicals were of the highest purity commercially available.
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7

HFUMS-Induced Calcium Signaling in HUVECs

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Human umbilical vein endothelial cell lines were obtained from Cell Applications Inc. (San Diego, CA, USA) and maintained in endothelial cell growth medium. A calcium indicator, Fluo-4 AM was purchased from Invitrogen (Grand Island, NY, USA) for live-cell calcium fluorescence imaging. Gadolinium chloride, Thapsigargin, EDTA, and U73122 were purchased from Sigma-Aldrich (St. Louis, MO, USA) to investigate the dependences of HFUMS-induced Ca2+ elevation on extracellular calcium and cytoplasmic calcium stores in HUVECs. Rodamine B was purchased from Sigma-Aldrich to examine the temperature changes of media by HFUM application.
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8

Cardiac Effects of CB1/CB2 Receptor Antagonists

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The cannabinoid receptor-1 (CB1) antagonist, AM251 (Sigma Chemicals), was administered either acutely (3 mg/kg, iv) in the experiments involving ventricular pressure-volume studies and measurement of changes in ESPVR or chronically (3 mg/kg/day, SC × 2 days) in the hemorrhage studies. The CB-2 receptor antagonist AM630 (Sigma) was administered acutely (3 mg/kg iv) in ventricular pressure-volume experiments. Gadolinium chloride (12 mg/kg iv daily × 2 days, Sigma) was used to deplete monocytes and macrophages from cardiac tissue.
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9

Cell Culture Reagent Protocol

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All cell culture reagents were obtained from Cultilab (Brazil). Suramin, ARL 67156, and gadolinium chloride were purchased from Sigma Aldrich (St. Louis, MO).
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10

Liver Regeneration and Inflammatory Cytokines

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To explore the role of inflammatory cytokines in liver regeneration, the Kupffer cell inhibitor gadolinium chloride (GdCl3; Sigma-Aldrich, St. Louis, MO, United States) was used. Another set of animals was used for the Kupffer cell inhibition experiments. We prepared an ALPPS model for GdCl3 administration (n = 3). GdCl3 (10 mg/kg) was administered intraperitoneally 24 h before surgery. In the control group, physiological saline was administered. All rats were sacrificed 48 h after surgery to obtain liver samples.
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