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26 protocols using rat il 6 elisa kit

1

Quantifying Inflammatory Cytokines in Rat Serum

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ELISA was used to measure inflammatory cytokines in serum or cell supernatants. After the rats were euthanized, blood samples (2 ml) were collected in tubes without EDTA to obtain the serum. The supernatant was obtained after centrifugation at 1800 x g for 10 min at room temperature. Serum levels of TNF-α, IL-6, IL-1β, and MCP-1 were measured using commercial ELISA kits, including a rat TNF-α ELISA Kit (ab46070) (Abcam, Cambridge, MA, USA), a rat IL-6 ELISA Kit (ab234570) (Abcam, Cambridge, MA, USA), a rat IL-1β ELISA Kit (ab100767) (Abcam, Cambridge, MA, USA), and a rat MCP-1 ELISA Kit (ab219045) (Abcam, Cambridge, MA, USA), according to manufacturer’s instruction.
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2

Measuring Serum Cytokine Levels in Rats

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The serum concentrations of pro-inflammatory cytokines in the rats were measured by ELISA, according to the manufacturer’s instructions. The ELISA kits used for detection of serum levels of cytokines included a rat interleukin (IL)-1β ELISA kit (Abcam, Cambridge, UK), a rat IL-6 ELISA kit (Abcam, Cambridge, UK), a rat IL-18 ELISA kit (Abcam, Cambridge, UK), a rat JE/CCL2/MCP-1 Duoset ELISA kit (R&D Systems, Minneapolis, MN, USA), and a rat tumor necrosis factor-α (TNF-α) ELISA kit (Abcam, Cambridge, UK).
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3

PLGA-based Drug Delivery System Development

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PLGA (lactic acid:glycolic acid = 50:50; MW = 48,000) was obtained from Evonik Industries (Essen, Germany). Dichloromethane (DCM; >99.5%) and N,N‐dimethylformamide (DMF, >99.5%) were purchased from DaeJung (Siheung, Korea). Acetonitrile (ACN; >99.9%) and lidocaine were obtained from J. T. Bakers (Phillisburg, NJ) and Tokyo Chemical Industry (Tokyo, Japan), respectively. Polethylene catheters (SP‐45 and SP‐61) were obtained from Natsume Seisakusho (Tokyo, Japan). Surgical sutures (4–0 and 5–0 silk) and cotton bandages were purchased from Ailee (Seoul, Korea) and Bandgold (Ansan, Gyeonggi‐do, Korea), respectively. Cyclophosphamide (CYP) was purchased from Sigma‐Aldrich (MO). Anti‐COX‐2 polyclonal antibody (ab 15191), anti‐IL‐6 polyclonal antibody (ab 6672), anti‐NGF polyclonal antibody (ab 6199), and rat IL‐6 ELISA Kit (ab 234570) were obtained from Abcam (MA). DAB kit was purchased from Vector Laboratories (CA). Hematoxylin‐1 and bluing solution were purchased from the Korea Standard (Seongnam, Korea). Revoscript rt premix (25086) was purchased from Invitrogen (Carlsbad, CA). LightCycler ® 480 SYBR Green was purchased from Roche (Basel, Switzerland).
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4

PLGA-based Inflammatory Cytokine ELISA Assay

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Standards of TPL (the purity is above 98.5% determined by HPLC-UV, China National Institutes for Food and Drug Control); PLGA (molecular weight = 15,000 Da, Shandong institute of medical devices); methanol (Merck Co., Gradient Grade), acetonitrile (Merck Co., Gradient Grade), ammonium formate (Merck Co., Gradient Grade); Rat IL-1α ELISA Kit, Rat IL-6 ELISA Kit, Rat TNF alpha ELISA Kit (Abcam®); Rat CRP (C-Reactive Protein) ELISA Kit (Elabscience®); anhydrous ethanol, paraformaldehyde, xylene, formaldehyde, hydrochloric acid, neutral balsam, propylene glycol (Sinopharm Chemical Reagent Co., Ltd., analytical grade); Chicken type II collagen (Hefei Bomei biotechnology Co., Ltd.); Phosphate buffer solution (PBS, Life Technologies®).
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5

Quantifying IL-6 and IL-1β in LPS-treated H9c2 Cells

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Levels of two proinflammatory factors interleukin-6 (IL-6) and interleukin-1β (IL-1β) in LPS-induced H9c2 cells with or without transfection of miR-197 inhibitor were determined by an ELISA. Specifically, the rat IL-1β ELISA kit (ab255730, Abcam, USA) was added into the cells according to the protocol booklet. Then, the cells were sealed and incubated at room temperature for 1 h. After being washed with Wash Buffer PT three times, the cells were treated with 100 μl of TMB development solution for 10 minutes in the dark and with 100 μl stop solution for 1 minute. Following this, the final absorbance was measured at 450 nm using the microplate reader. Ultimately, the IL-6 level was determined by the rat IL-6 ELISA kit (ab234570, Abcam, USA) following the same procedures as mentioned above.
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6

Quantification of Inflammatory Proteins in Rat Hippocampus

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The protein levels of interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-10 (IL-10) and tumor necrosis factor-α (TNF-α) in the hippocampus were determined using ELISA kits. The ELISA was performed according to the manufacturer’s instructions. Briefly, the hippocampus was collected and homogenized in ice-cold RIPA buffer (89900, Pierce, Waltham, MA, USA). The lysate was centrifugated and the supernatant was collected. The total protein concentrate was measured using the BCA method (23227, Pierce, Waltham, MA, USA). The IL-1β, IL-6, IL-10 and TNF-α protein levels were determined by Rat IL-1β ELISA kit (ab100768, Abcam, Boston, MA, USA), Rat IL-6 ELISA kit (ab100772, Abcam, Boston, MA, USA), Rat TNF-α ELISA kit (ab46070, Abcam, Boston, MA, USA) and Rat IL-10 ELISA kit (ab100765, Abcam, Boston, MA, USA), respectively. The optical density was measured by a microplate reader (xMarkTM, Bio-Rad, Hercules, CA, USA). Finally, the protein levels of inflammatory factors were conducted by normalizing them to total protein levels.
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7

Quantifying Inflammatory Biomarkers

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The plasma interleukin 6 (IL-6) and C-reactive protein (CRP) levels were measured by means of commercially available Rat CRP ELISA kit (Abcam, Cambridge, MA) and Rat IL-6 ELISA kit (Abcam, Cambridge, MA), respectively. All the procedures and conditions were consistent with the instructions of these kits.
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8

Quantifying Inflammatory Biomarkers

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The plasma interleukin 6 (IL-6) and C-reactive protein (CRP) levels were measured by means of commercially available Rat CRP ELISA kit (Abcam, Cambridge, MA) and Rat IL-6 ELISA kit (Abcam, Cambridge, MA), respectively. All the procedures and conditions were consistent with the instructions of these kits.
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9

Cytokine and Enzyme Profiling in Serum

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The concentration of serum TNF-α and IL-6 was determined by the rat TNF-α ELISA kit (Abcam) and the rat IL-6 ELISA kit (Abcam). In accordance with the instructions of the manufacturer, the detection of serum lipase and amylase content was carried out by the Olympus AU600 automatic biochemical analyzer (Tokyo, Japan).
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10

Cytokine Quantification in Serum and BALF

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The levels of cytokines, including tumour necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6, in the serum and BALF were tested using the following enzyme-linked immunosorbent assay (ELISA) kits: Rat TNF-α ELISA kit (ab100785, Abcam, Cambridge, UK), Rat IL-1β ELISA kit (ab100767, Abcam) and Rat IL-6 ELISA kit (ab100772, Abcam). All experiments were performed in accordance with the product instructions.
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