From Wikipedia, the free encyclopedia. Prostaglandin D2 (or PGD2) is a prostaglandin that binds to the receptor PTGDR (DP 1), as well as CRTH2 (DP 2). It is a major prostaglandin produced by mast cells â recruits Th2 cells, eosinophils, and basophils.In mammalian organs, large amounts of PGD 2 are found only in the brain and in mast cells. It is critical to development of allergic diseases such as asthma.t is a major prostaglandin produced by mast cells â recruits Th2 cells, eosinophils, and basophils. In mammalian organs, large amounts of PGD 2 are found only in the brain and in mast cells.
Viral and bacterial conjunctivitis. Viral conjunctivitis and bacterial conjunctivitis may affect one or both eyes. Viral conjunctivitis usually produces a watery discharge. Bacterial conjunctivitis often produces a thicker, yellow-green discharge.Both types can be associated with colds or symptoms of a respiratory infection, such as a sore throat.Both viral and bacterial types are very contagious. They are spread through direct or indirect contact with the eye secretions of someone who's infected.acterial conjunctivitis often produces a thicker, yellow-green discharge. Both types can be associated with colds or symptoms of a respiratory infection, such as a sore throat. Both viral and bacterial types are very contagious.
Conjunctivitis when caused by an infection is most commonly caused by a viral infection. Bacterial infections, allergies, other irritants and dryness are also common causes. Both bacterial and viral infections are contagious and passed from person to person, but can also spread through contaminated objects or water.onjunctivitis can affect one or both eyes and is the most likely diagnosis in someone with eye redness and discharge (fluid coming from the eye). The affected eye is often stuck shut in the morning. Bacterial and viral conjunctivitis are highly contagious, and are transmitted through contact with the discharge.