Abstract: An anti-osteoclastic composition containing a proteoglycan 4 in a pharmaceutically acceptable carrier is administered to a human or animal suffering from a pathological bone condition such as osteoporosis in a sufficient amount to reduce, delay onset of or prevent excessive bone resorption in which the rate of bone resorption exceed the rate of bone formation. Excessive bone resorption is inhibited by preventing the formation or activity of osteoclasts. Osteoporosis is linked to bone fracture, a debilitation condition often resulting in the need for risky, invasive surgery, and the possible consequence of permanent immobilization, especially in elderly populations.

Abstract: Disclosed herein are methods of using PRG4 glycoprotein, also known as lubricin, to reduce, inhibit, or down-regulate pro-inflammatory pathways in patients at risk of or suffering from an inflammatory response or allergy symptom through CD44 antagonization, regulating pro-inflammatory cytokine production, inhibiting NF-?B translocation and/or facilitating removal of inflammation-inducing cellular or matrix debris or allergens.

Abstract: Disclosed herein are methods of using PRG4 glycoprotein, also known as lubricin, to reduce, inhibit, or down-regulate pro-inflammatory pathways in patients at risk of or suffering from an inflammatory response or allergy symptom through CD44 antagonization, regulating pro-inflammatory cytokine production, inhibiting NF-?B translocation and/or facilitating removal of inflammation-inducing cellular or matrix debris or allergens.

Abstract: The application relates to uses of the proteoglycan 4 protein, also known as lubricin, in wound healing and tissue regeneration, reducing scar formation, and promoting angiogenesis.

Abstract: Disclosed herein are methods of using PRG4 glycoprotein, also known as lubricin, to reduce, inhibit, or down-regulate pro-inflammatory pathways in patients at risk of or suffering from an inflammatory response or allergy symptom through CD44 antagonization, regulating pro-inflammatory cytokine production, inhibiting NF-?B translocation and/or facilitating removal of inflammation-inducing cellular or matrix debris or allergens.

Abstract: Disclosed are mixed solutions of PRG4 and hyaluronic acids having controlled, enhanced rheological properties adapted for various particular medical and cosmetic uses. Such solutions combine the solution-based lubrication ability of HA and the boundary-based lubricating effects of lubricin. Being more viscous, the solutions when used for joint viscosupplementation enhance both the duration of the HA within the joint capsule (in vivo half-life) and enhance the cushioning effects of the HA, as well as improve both solution and boundary mode lubrication mechanisms.

Abstract: Disclosed herein are methods of using PRG4 glycoprotein, also known as lubricin, to reduce, inhibit, or down-regulate pro-inflammatory pathways in patients at risk of or suffering from an inflammatory response or allergy symptom through CD44 antagonization, regulating pro-inflammatory cytokine production, inhibiting NF-?B translocation and/or facilitating removal of inflammation-inducing cellular or matrix debris or allergens.

Abstract: Disclosed are mixed solutions of PRG4 and hyaluronic acids having controlled, enhanced rheological properties adapted for various particular medical and cosmetic uses. Such solutions combine the solution-based lubrication ability of HA and the boundary-based lubricating effects of lubricin. Being more viscous, the solutions when used for joint viscosupplementation enhance both the duration of the HA within the joint capsule (in vivo half-life) and enhance the cushioning effects of the HA, as well as improve both solution and boundary mode lubrication mechanisms.