2 results about "Polyamine Inhibitor" patented technology

The present disclosure provides compositions comprising a polyamine synthesis inhibitor, a tyrosinase inhibitor and a corticosteroid, for reducing excess pigmentation. Also provided herein are methods of reducing excess pigmentation in a subject, comprising administering a composition comprising a polyamine synthesis inhibitor, a tyrosinase inhibitor and a corticosteroid to the subject, and uses of the claimed composition. In some examples, the polyamine inhibitor is an ornithine decarboxylase (ODC) inhibitor such as eflornithine (DFMO).

The application discloses an oil-gas field drilling polyamine drilling fluid and a preparation method and application thereof, relates to the technical field of oil-gas field drilling, and the polyamine drilling fluid is prepared from the following raw materials in the total volume of 100 mL of water: 1.0-2.0 g of bentonite, 0.2-0.3 g of a tackifier, 0.2-0.4 g of an alkalinity regulator, 0.1-0.2 g of a coating agent, 3.0-4.0 g of a nano fluid loss additive, 3.0-4.0 g of a lubricant, 5.0-6.0 g of a polyamine inhibitor, 6.0-8.0 g of an inorganic salt, and a weighting material, wherein the density of the polyamine drilling fluid is 1.5-1.8 g / cm 3 . The polyamine drilling fluid has good rheological property, strong inhibitory property and lubricating property, can keep the well wall of a shale formation stable for a long time, reduce the drilling friction of the shale formation, has good biodegradability and meets the environmental protection requirements.