Modulation of inflammation by hops fractions and derivatives
a technology of fractions and derivatives, applied in the field of modulation of inflammation by hops fractions and derivatives, can solve the problems of increasing asthma, increasing the sensitivity of consumers to allergens, and complicated issues, so as to improve the rate of glucosamine, reduce the symptoms of osteoarthritis, and normalize the movement of joints
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example 1
[0110] AGS Gastric Mucosal Cells Constitutively Express Both cyclooxygenase-1 and cyclooxygenase-2
[0111] Summary—This example demonstrates that the AGS human gastric mucosal cell line, possessing constitutive expression of COX-1 and COX-2, has excellent potential to serve as a model for assessing the gastrointestinal toxicity of cyclooxygenase-inhibiting compounds.
[0112] Equipment used in this example included: an OHAS Model #E01140 analytical balance, a Form a Model #F1214 biosafety cabinet (Marietta, Ohio), various pipettes to deliver 0.1 to 100 μL (VWR, Rochester, N.Y.), a cell hand tally counter (VWR Catalog #23609-102, Rochester, N.Y.), a Form a Model #F3210 CO2 incubator (Marietta, Ohio), a hemacytometer (Hausser Model #1492, Horsham, Pa.), a Leica Model #DM IL inverted microscope (Wetzlar, Germany), a PURELAB Plus Water Polishing System (U.S. Filter, Lowell, Mass.), a 4° C. refrigerator (Form a Model #F3775, Marietta, Ohio), a vortex mixer (VWR Catalog #33994-306, Rochester...
example 2
[0120] Inhibition of PGE2 Synthesis in Gastric Mucosal Cells by Nonsteroidal Anti-Inflammatory Drugs
[0121] Summary—This example illustrates that inhibition of PGE2 synthesis in AGS gastric cells by NSAIDs correlates with their observed clinical gastric irritation.
[0122] Chemicals—Rofecoxib and celexocib were obtained. Diisofluorophosphate (DIFP), nimensulide, ibuprofen, salicylic acid, aspirin, indomethacin and acetaminophen were purchased from Sigma (St. Louis, Mo.). All other chemicals were obtained from suppliers as described in Example 1.
[0123] Cells—A549 (human pulmonary epithelial) and AGS cells (human gastric mucosa) were obtained from the American Type Culture Collection (Manassas, Va.) and sub-cultured according to the instructions of the supplier. The cells were routinely cultured at 37° C. with 5% CO2 in RPMI 1640 containing 10% FBS, with 50 units penicillin / mL, 50 μg streptomycin / mL, 5% sodium pyruvate, and 5% L-glutamine. On the day of the experiments, exponentially ...
example 3
[0133] Inhibition of PGE2 Synthesis in Stimulated and Nonstimulated Murine Macrophages by Hops (Humulus lupulus) Compounds and Derviatives
[0134] Summary—This example illustrates the potency of hops fractions and derivatives to inhibit COX-2 synthesis of PGE2 preferentially over COX-1 synthesis of PGE2 in the murine macrophage model.
[0135] Chemicals and reagents—Bacterial lipopolysaccharide (LPS; B E. coli 055:B5) was from Sigma (St. Louis, Mo.). Hops fractions (1) alpha hop (1% alpha acids; AA), (2) aromahop OE (10% beta acids and 2% isomerized alpha acids, (3) isohop (isomerized alpha acids; IAA), (4) beta acid solution (beta acids BA), (5) hexahop gold (hexahydro isomerized alpha acids; HHIAA), (6) redihop (reduced isomerized-alpha acids; RIAA), (7) tetrahop (tetrahydro-iso-alpha acids THIAA) and (8) spent hops were obtained from Betatech Hops Products (Washington, D.C., U.S.A.). The spent hops were extracted two times with equal volumes of absolute ethanol. The ethanol was remo...
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