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10 protocols using rat igg elisa kit

1

Quantification of Rat Biomarkers

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The concentration of 8-isoprostane was estimated using Rat 8-isoprostane ELISA Kit (Abcam, Cambridge, UK). The serum level of IgG was analyzed using Rat IgG ELISA Kit (Abcam, Cambridge, UK). The plates were washed with Stat Fax 2600 (Awareness Technology, Palm City, FL, USA); the results were determined using a Stat Fax 4300 Chromate ELISA photometer (Awareness Technology, Palm City, FL, USA).
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2

Quantifying BBB Permeability via IgG

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A commercial rat IgG ELISA kit (Abcam Trading (Shanghai) Company Ltd. Shanghai, China) was used to measure the blood IgG in brain parenchyma, providing an indirect measurement of the BBB permeability, as a compromised BBB influences the IgG present in brain parenchyma. We therefore measured the IgG in 100 µg protein of brain parenchyma, prepared from the cortex and subcortex of the rat brain, respectively.
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3

Nimodipine Pharmacological Evaluation

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Nimodipine was purchased from the Shandong Fangming Pharmaceutical Group Co. Ltd. (Shandong, China). The 2,3,5-triphenyltetrazolium chloride (TTC), MDA and LDH test kits were purchased from Nanjing Jiancheng Biological Company (Nanjing, China). The rat IgG ELISA kit was purchased from Abcam Trading (Shanghai) Company, Ltd. (Shanghai, China).
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4

Quantification of Endogenous IgG in Rat Eyes

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To quantify the endogenous IgG, untreated rats were sacrificed, the eyes were enucleated and separated into two parts: vitreous/retina and choroid. For the extraction of IgG, vitreous/retina and choroid tissue samples were incubated with 200 μl lysis buffer (CelLytic™ MT Cell Lysis Reagent, Sigma-Aldrich) overnight at 4 °C, followed by centrifuging at 13,000 rpm for 10 mins (MiniSpin Eppendorf, Thermo Fisher Scientific) and the supernatant was collected for measurement of IgG using an ELISA kit according to the manufacturers’ protocol (Rat IgG ELISA kit, Abcam).
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5

Quantitative and Qualitative Leukocyte Analysis

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Quantitative and qualitative analyses of leukocytes were carried out according to the descriptive protocol of Khan et al. [39 (link)]. The quantitative analysis of IgG (ab189578, Rat IgG ELISA Kit, Japan), IgA (ab157735, Rat IgA ELISA Kit, Abcam Co. Waltham, MA, USA), and IgM (ab157738, Rat IgM ELISA Kit, Abcam Co. Waltham, MA, USA) was conducted using ELISA-based techniques according to the kit instructions and Juto and Settergren [40 (link)]. Some cytokines for determining pro-inflammation, such as IL1-β (ab255730, Rat IL-beta ELISA Kit, Abcam Co. Waltham, MA, USA) and TNF-α (ab236712, Rat TNF-α ELISA Kit, Abcam Co. Waltham, MA, USA), and anti-inflammation, such as IL10 (ab214566, Rat IL10 ELISA Kit, Abcam Co. Waltham, MA, USA), IL-13 (ab269547, Rat IL-13 ELISA Kit, Abcam Co. Waltham, MA, USA), and IL-6 (ab234570, Rat IL-6 ELISA Kit, Abcam Co. Waltham, MA, USA), were examined according to Brink et al. [41 (link)].
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6

Quantification of Anti-TNF-α Antibody in CMC-MNAs

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To determine the amount of anti-TNF-α Ab in tip-loaded CMC-MNAs, Rat IgG ELISA kit was purchased from Abcam (Cambridge, England) and used according to the kit instructions. MNAs were dissolved in 0.1 M sodium bicarbonate for 15 s at 0.05 mL/patch and diluted 10x for the assay in assay diluent.
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7

Rat IgG Quantification by ELISA

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The IgG concentration in the serum was measured using a Rat IgG ELISA Kit (Abcam plc, Cambridge, UK) according to the manufacturer’s instructions.
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8

Serum Cytokine and Immunoglobulin Levels

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Serum interleukin (IL)-1β and IL-12 levels were determined by Rat IL-1β ELISA Kit (MBS843359, MyBioSource, USA) and Rat IL-12 ELISA Kit (MBS2507061, MyBioSource, USA). Serum immunoglobulin (Ig) levels were determined by Rat IgG ELISA Kit (ab189578, Abcam, UK), Rat IgE ELISA Kit (CSB-E07984r, Cusabio, USA) and Rat IgA ELISA Kit (ab157735, Abcam, UK).
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9

Tear LDH, MUC5AC, and Serum IgG/IgE Levels

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LDH activity and MUC5AC level were measured in six tear samples from each group. LDH activity was measured with the LDH ELISA (enzyme-linked immunosorbent assay) kit (Cyto-Tox96 nonradioactive cytotoxicity assay; Promega, Madison, WI, USA), 30, 31 and the level of MUC5AC was measured with an ELISA kit for mucin 5 subtype AC (MyBiosource; San Diego, CA, USA). [30] [31] [32] The blood samples for measuring the IgG and IgE levels in serum were collected from the abdominal aorta of four rats in each group under general anesthesia. The IgG level in serum (1:200,000) was measured with a rat IgG ELISA kit (ab189578; Abcam, Cambridge, UK), while the IgE level in serum (9:10) was measured with a rat IgE ELISA kit (ab157736; Abcam). 14 All measurements were conducted according to the manufacturer's protocols using a microplate spectrophotometer (Spectramax Plus 384; Molecular Devices, Sunnyvale, CA, USA).
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10

Serum IgG and 8-OHDG Quantification

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Serum immunoglobulin G (IgG) levels were determined using the Rat IgG ELISA kit (Abcam, Cambridge, UK). The 8-hydroxy-2-deoxyguanosine (8-OHDG) level in rat serum and liver was determined using an 8-hydroxy 2 deoxyguanosine ELISA Kit (Abcam, Cambridge, UK), and the data were recorded on a Stat Fax 4300 chromate ELISA photometer (Awareness Technology, Palm City, FL, USA).
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