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27 protocols using celecoxib

1

Laser-Induced Retinal Injury Model

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The mice were anaesthetized, and the pupils were dilated by applying Cyclomydril (Alcon, Fort Worth, TX, USA). Using a 532-nm laser, a slit-lamp delivery system, and a sliding glass as a contact lens, 4 spots (laser power, 200 mW; exposure time, 100 ms; hole size, 75 μm) were placed into each eye at a distance of approximately 2 optic disc diameters from the optic nerve head. After the laser-induced injury, the clodronate group mice (> 20 weeks old) received an intravitreal injection with 2 μl/eye of 90 μg clodronate liposomes (including 16 μg of clodronic acid) mixed with 154 mM sodium chloride at a ratio of 1:1 or control liposomes using a 33-gauge needle. The eyes of a selective cyclooxygenase-2 (COX2) inhibitor celecoxib (Cayman Chemical Company #169,590–42-5) injection group were subjected to IVI of celecoxib (10 mM celecoxib dissolved in 154 mM sodium chloride at a ratio of 1:3), or DMSO (vehicle, 25%). In some cases, celecoxib was administered orally at a dose of 100 mg/kg/day. celecoxib was dissolved in 100% ethanol (v/v) and mixed with the food. After the ethanol was completely volatilized, the food was fed to the mice daily. The control mice were fed with the volatilized ethanol-treated food daily.
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2

Listeria Monocytogenes Infection Model

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L. monocytogenes of the wild-type, attenuated (LADD), or Δhly background were grown overnight in brain heart infusion media at 30C. The bacteria were back diluted 1:5 and allowed to grow to log phase (OD0.4–0.6, ~1–1.5 hours) at 37C, with aeration, prior to infection. Bacteria were diluted in PBS and mice were infected with 200μL at the indicated doses intravenously. For bacterial burden analysis, mice were sacrificed at 12hpi and livers were homogenized in 0.1% Nonidet P-40 in PBS and plated on Luria-Bertani plates. For splenic macrophage depletion, 200μL clodronate, PBS control, or endosome lipid control (Encapsula Nano Sciences) were given intravenously 24 hours prior to bacterial infection according to the manufacturer’s instructions. For B-cell depletion, mice were dosed intraperitoneally with 12.5μg of Ultra-LEAF Purified anti-mouse CD20 (clone SA271G2) or isotype control (clone RTK4530) in 100μL PBS 24 hours prior to bacterial infection. Depletion efficacy of relevant cell subsets was confirmed by assessing abundance of splenic CD11b+ cells (clone M1/70), CD11c+ cells (clone N418), or B220+ cells (clone RA3-6B2) by flow cytometry. Celecoxib (Cayman Chemical) was milled into standard mouse chow (Envigo) at 100mg/kg and fed ad lib for 48 hours before and after immunization [16 (link),77 (link)].
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3

Synthesis and Characterization of Compound I

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Compound I (2-methyl-2-[cis-4-([1-(6-methyl-3-phenylquinolin-2-yl)piperidin-4-yl]carbonyl amino)cyclohexyl] propanoic acid) was synthesized at Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd. Detailed information of its chemical synthesis is described in the patent [18 ]. The chemical structure is shown in Figure 1. IP antagonist, RO3244019, (R)-3-phenyl-2-(5-phenyl-benzofuran-2-ylmethoxycarbonylamino)-propionic acid, and EP4 antagonist, CJ-023423, N-[N-[2-[4-(2-ethyl-4,6-dimethyl-1H-imidazo[4,5-c]pyridin-1-yl)phenyl]ethyl]carbamoyl]-4-methylbenzenesulfonamide, were synthesized at Medicinal Chemistry Research Laboratories, Daiichi Sankyo Co., Ltd. Celecoxib (4-[5-(4-methylphenyl)-3-(trifluoromethyl)pyrazol-1-yl]benzenesulfonamide) was purchased from Cayman Chemical Company (Ann Arbor, MI). All compounds were suspended in 0.5% methyl cellulose 400 solution and sterilized (Wako Pure Chemical Industries, Ltd., Osaka, Japan) and a volume of 5 mL/kg was administered orally to animals.
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4

Preparation of Compound Stock Solutions

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100 mM stock solutions of all screened compounds were prepared in individual, sterile amber vials. All stock solutions were dissolved in sterile DMSO, except L-arginine, which was solubilized using dH2O, due to solubility constraints. Sterile cell-culture grade DMSO, tamsulosin hydrochloride, nifedipine, isoproterenol, butoxamine, adenosine and L-arginine were obtained from Sigma Aldrich. PGE1, PGE2, rolipram, L-arginine, ondansetron, celecoxib, diclofenac, mirabegron, sildenafil, atropine, vardenafil and tiotropium were obtained from Cayman Chemical. Y-27632 dihydrochloride was obtained from R&D Systems. Stock solutions when unused were stored at −20 °C
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5

Melanoma cell lines BRAF-V600E assay

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Two human melanoma cell lines were used: A375 (European Collection of Authenticated Cell Cultures, through Sigma Aldrich Company, St. Louis, MO, USA) and SK-MEL-28 (Cell line services, Eppelheim, Germany). Both melanoma cell lines were positive for BRAF-V600E mutation. Each cell line was seeded and maintained in Dulbecco’s modified Eagle Medium (DMEM), enriched with 10% fetal calf serum (FCS), 5 ng/mL amphotericin, and 50 μg/mL gentamicin, all reagents being from Biochrom AG, Berlin, Germany. The protocol followed standard culture conditions: cells were kept at constant temperature (37 °C) and humidity, under a 5% CO2 atmosphere, in an incubator, and were fed twice a week; all experiments were carried out in triplicate (n = 3); cells were used within a maximum of 4 passages. Dabrafenib and celecoxib were purchased from Cayman Chemical, MI, USA.
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6

Amnion Biomechanics Under Inflammatory Conditions

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Then 3- ×3-cm sections of amnion from CS-term pregnancies were prepared from
the region measuring 5 cm away from the edge of the placental disk and were incubated
in media (no drug control), 10 ng/mL TNF-α (Peprotech), 0.5%
ethacridine (Abcam), 10−5 M Etodolac (Sigma Aldrich, St. Louis,
MO), 10 μM celecoxib (Cayman, Ann Arbor, MI), and 10 ng/mL
TNF-α with 10−5 M Etodolac at
37°C overnight. The treated amnion was placed to cover the end of a
pressurized tube 1 cm in diameter and placed within a DMEM bath. The tube was
connected to a syringe pump, which produced pressurized flow of infused DMEM.
Membrane rupture was signaled by blue dye from the DMEM entering the DMEM bath.
Pressure and time of rupture was recorded. Western blot was performed on all ruptured
membranes.
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7

Celecoxib and Prostaglandin Modulation in Infection

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Celecoxib (Cayman Chemical No. 10008672) was suspended in ethanol and stored at −20°C. Aliquots were mixed 1:1 with vanilla extract (Kroger) to increase palatability and mice were treated at 10 mg/kg orally q12 h beginning at 48 hpi. Vehicle control mice were given an equal volume of ethanol plus vanilla. For indomethacin challenge experiments, female BALB/cByJ mice were injected i.p. twice per day with 2 mg/kg indomethacin (Cayman Chemical # 70270) suspended in DMSO and diluted in sterile HBSS. For PGE2 challenge experiments, female B6 mice were injected i.p. with 40 μg of 16,16 dM PGE2 (Cayman Chemical # 14750; suspended in DMSO and diluted in sterile HBSS) once daily, beginning immediately after infection. Four days post-infection, organs were harvested, homogenized, and plated on BHI agar.
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8

Porcine Sapovirus Capsid and VPg Antibody Production

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Celecoxib, NS-398, SC-58125, SC-236, nimesulide, and SC-560 were purchased from Cayman Chemical (Ann Arbor, MI, USA). GCDCA, dimethyl sulfoxide (DMSO), L-NAME, MDL-12330A, and indomethacin were from Sigma-Aldrich (St. Louis, MO, USA). COX-1 siRNA, COX-2 siRNA, and scrambled siRNA were purchased from Santa Cruz Biotechnology, Inc. (Santa Cruz, CA, USA). Monoclonal antibody (MAb) against mouse COX-1 and polyclonal antibody against rabbit COX-2 were obtained from Abcam (Cambridge, MA, USA). Mouse MAb against HA tag was purchased from OriGene (Rockville, MD, USA). Synthetic PGE2 was purchased from Tocris Bioscience (Ellisville, MO, USA). The anti-PSaV capsid MAb and the anti-PSaV VPg polyclonal antibody were previously described (41 (link)). The secondary antibodies used were horseradish peroxidase-conjugated goat immunoglobulin against rabbit IgG (Cell Signaling, Beverly, MA, USA) and mouse IgG (Santa Cruz) and fluorescein isothiocyanate (FITC)-conjugated goat immunoglobulin against rabbit IgG (Jackson Immuno Research Laboratory, West Grove, PA, USA).
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9

Cetuximab and COX-2 Inhibitors Evaluation

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Cetuximab (Erbitux) was obtained from the outpatient pharmacy at The University of Texas MD Anderson Cancer Center. The COX-2 inhibitors celecoxib, SC-236 (4-[5-(4-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl]-benzenesulfonamide), and NS-398 (9N-[2-(cyclohexyloxy)-4-nitrophenyl]-methanesulfonamide) were purchased from Cayman Chemical. All other chemicals were purchased from Sigma-Aldrich unless otherwise specified.
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10

Zebrafish Daily Drug Injections

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Zebrafish were injected daily, beginning on the day of surgery, with 220 ng/g of NS-398 or 1 μg/g Celecoxib (Cayman Chemical, Ann Arbor, MI #70590, #10008672); vehicle controls were 0.1% DMSO, or 0.44% EtOH, respectively.
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