Abstract: Described herein are methods for treating or preventing a disease or disorder of the pulmonary system (e.g., cystic fibrosis), respiratory or digestive system in a subject, the methods comprising administering compounds or compositions comprising water soluble polyglucosamine and derivatized polyglucosamine.

Abstract: Described herein are a solution, composition, and kit of poly (acetyl, arginyl) glucosamine (PAAG), methods of making the solution, and method of treating wounds with the solution, the method comprising administering to a subject an effective amount of a solution comprising PAAG, wherein the PAAG when administered topically contacts the wound, thereby treating the wound.

Abstract: Described herein are a solution, composition, and kit of poly (acetyl, arginyl) glucosamine (PAAG), methods of making the solution, and method of treating wounds with the solution, the method comprising administering to a subject an effective amount of a solution comprising PAAG, wherein the PAAG when administered topically contacts the wound, thereby treating the wound.

Abstract: Methods and compositions are described for treatment of lung conditions using live biotherapeutics, in particular modified microbes, such as chimeric microbial hybrids or microbial mutants produced by environmental selective pressure and screened for characteristics that are therapeutically beneficial for treatment or prevention of lung conditions.

Abstract: Described herein are methods and compositions that contain a soluble polyglucosamine or polyglucosamine derivative for use in oral health. The compositions are useful for, e.g., reducing bacteria (e.g., by clumping and removing) or disrupting a biofilm in the mouth of a subject, reducing dry mouth, and reducing oral inflammation.

Abstract: Described herein are methods and compositions that contain a soluble polyglucosamine or polyglucosamine derivative for use in oral health. The compositions are useful for, e.g., reducing bacteria (e.g., by clumping and removing) or disrupting a biofilm in the mouth of a subject, reducing dry mouth, and reducing oral inflammation.

Abstract: Described herein is a method of reducing bacteria in the mouth of a subject, the method comprising contacting (e.g., rinsing) the mouth with an effective amount of a composition comprising a soluble derivatized chitosan, thereby reducing bacteria in the mouth of the subject.

Abstract: Described herein are a solution, composition, and kit of poly (acetyl, arginyl) glucosamine (PAAG), methods of making the solution, and method of treating wounds with the solution, the method comprising administering to a subject an effective amount of a solution comprising PAAG, wherein the PAAG when administered topically contacts the wound, thereby treating the wound.

Abstract: Described herein are methods and compositions that contain a soluble polyglucosamine or polyglucosamine derivative for use in oral health. The compositions are useful for, e.g., reducing bacteria (e.g., by clumping and removing) or disrupting a biofilm in the mouth of a subject, reducing dry mouth, and reducing oral inflammation.

Abstract: A method of treating a surface, the method comprising contacting (e.g., spraying) an effective amount of a composition comprising a chitosan (e.g., soluble or derivatized chitosan) with the surface, thereby treating the surface. Non-pharmaceutical compositions (e.g., liquid or dry powder compositions) include chitosan (e.g., a soluble or derivatized chitosan). The compounds and compositions described herein are biocompatible (e.g., non-toxic) and/or biodegradable (e.g., eco-friendly). Methods using the compositions described herein include methods of treating a surface (e.g., an inert and/or non-animal surface, e.g., a synthetic or semi-synthetic surface (e.g., cellulose, ceramic, plastic, metal, glass, wood, or stone); or a food or food product surface, the method comprising contacting (e.g., spraying) an effective amount of a composition comprising a chitosan (e.g.

Abstract: Described herein is a method of reducing bacteria in the mouth of a subject, the method comprising contacting (e.g., rinsing) the mouth with an effective amount of a composition comprising a soluble derivatized chitosan, thereby reducing bacteria in the mouth of the subject.