Abstract: The present invention is directed to presqualene diphosphate (PSDP) analogs having an active region of natural PSDP and a metabolic transformation region resistant to rapid intracellular inactivation in vivo. For example, PSDP and its stable analogs can inhibit neutrophil signal transduction events in cellular activation that result in the generation of active oxygen species, regulation of leukocyte adherence, both homotypic (leukocyte-leukocyte) or heterotypic adherence with leukocytes and epithelial cells of mucosal origin or endothelial cells of vascular origin. These analogs can also be used to regulate leukocyte-dependent tissue injury.

Abstract: The present invention is directed to presqualene diphosphate (PSDP) analogs having an active region of natural PSDP and a metabolic transformation region resistant to rapid intracellular inactivation in vivo. For example, PSDP and its stable analogs can inhibit neutrophil signal transduction events in cellular activation that result in the generation of active oxygen species, regulation of leukocyte adherence, both homotypic (leukocyte-leukocyte) or heterotypic adherence with leukocytes and epithelial cells of mucosal origin or endothelial cells of vascular origin. These analogs can also be used to regulate leukocyte-dependent tissue injury.

Abstract: This invention provides pharmaceutical compositions containing lipoxin compounds and therapeutic uses for the compounds in treating or preventing a disease or condition associated with columnar epithelial inflammation. The invention also discloses methods for screening for compounds useful in preventing columnar epithelial inflammation.

Abstract: This invention provides pharmaceutical compositions containing lipoxin compounds and therapeutic uses for the compounds in treating or preventing a disease or condition associated with columnar epithelial inflammation. The invention also discloses methods for screening for compounds useful in preventing columnar epithelial inflammation.

Abstract: The present invention is directed to presqualene diphosphate (PSDP) analogs having an active region of natural PSDP and a metabolic transformation region resistant to rapid intracellular inactivation in vivo. For example, PSDP and its stable analogs can inhibit neutrophil signal transduction events in cellular activation that result in the generation of active oxygen species, regulation of leukocyte adherence, both homotypic (leukocyte-leukocyte) or heterotypic adherence with leukocytes and epithelial cells of mucosal origin or endothelial cells of vascular origin. These analogs can also be used to regulate leukocyte-dependent tissue injury.

Abstract: Compounds having the active site of natural lipoxins, but a longer tissue half-life are disclosed. In particular, 15-epi-lipoxins and their use in ameliorating undesired cell proliferation, which characterizes diseases such as cancer, are also disclosed.

Abstract: The present invention is directed to presqualene diphosphate (PSDP) analogs having an active region of natural PSDP and a metabolic transformation region resistant to rapid intracellular inactivation in vivo. For example, PSDP and its stable analogs can inhibit neutrophil signal transduction events in cellular activation that result in the generation of active oxygen species, regulation of leukocyte adherence, both homotypic (leukocyte-leukocyte) or heterotypic adherence with leukocytes and epithelial cells of mucosal origin or endothelial cells of vascular origin. These analogs can also be used to regulate leukocyte-dependent tissue injury.

Abstract: A lipoxin transport system which mediates uptake of lipoxin by cells is disclosed. Lipoxin transport into cells by the lipoxin transport system is inhibitable by 3,5-diiodosalicylic acid (DISA), pentachlorophenol (PCP), .alpha.-cyano-.beta.-(1-phenylindol-3-yl)acrylic acid (UK-5099), mersalyl and p-hydroxymercuribenzoate (pHMB). The invention provides methods for identifying inducers, enhancers and inhibitors of the lipoxin transport system. The invention further provides methods for inducing, enhancing or inhibiting lipoxin transport by the lipoxin transport system. Methods for identifying molecules which are transported by the lipoxin transport system, including lipoxin analogs, are also disclosed. Modulation of physiological responses by modulation of lipoxin transport into cells by the lipoxin transport system of the invention are also contemplated.

Abstract: This invention provides pharmaceutical compositions containing lipoxin compounds and therapeutic uses for the compounds in treating or preventing a disease or condition associated with columnar epithelial inflammation. The invention also discloses methods for screening for compounds useful in preventing columnar epithelial inflammation.

Abstract: Compounds having the active site of natural lipoxins, but a longer tissue hlf-life are disclosed. These small molecules are useful for treating vasoconstrictive, inflammatory, myeloid suppressive, cardiovascular, and gastrointestinal diseases.

Abstract: Compounds having the active site of natural lipoxins, but a longer tissue half-life are disclosed. These small molecules are useful for treating vasoconstrictive, inflammatory, myeloid suppressive, cardiovascular, and gastrointestinal diseases.

Abstract: Composition and methods are disclosed for antagonizing SRS-A, and especially LTD.sub.4, comprising the administration of LXA.sub.4 or an active derivative thereof to an animal. These compositions and methods are useful in the control of hemostasis, vascular reactivity, and especially vasoconstriction, and anaphylactic and allergic reactions in animals.