Methods and systems for control of solid phase peptide synthesis are generally described. Control of solid phase peptide synthesis involves the use of feedback from one or more reactions and/or processes (e.g., reagent removal) taking place in the solid phase peptide synthesis system. In some embodiments, a detector may detect one or more fluids flowing across a detection zone of a solid phase peptide synthesis system and one or more signals may be generated corresponding to the fluid(s). For instance, an electromagnetic radiation detector positioned downstream of a reactor may detect a fluid exiting the reactor after a deprotection reactor and produce a signal(s). In some embodiments, based at least in part on information derived from the signal(s), a parameter of the system may be modulated prior to and/or during one or more subsequent reactions and/or processes taking place in the solid phase peptide synthesis system. In some embodiments, the methods and systems, described herein, can be used to conduct quality control to determine and correct problems (e.g., aggregation, truncation, deletion) in reactions (e.g., coupling reactions) taking place in the solid phase peptide synthesis system.

Methods and systems for control of solid phase peptide synthesis are generally described. Control of solid phase peptide synthesis involves the use of feedback from one or more reactions and/or processes (e.g., reagent removal) taking place in the solid phase peptide synthesis system. In some embodiments, a detector may detect one or more fluids flowing across a detection zone of a solid phase peptide synthesis system and one or more signals may be generated corresponding to the fluid(s). For instance, an electromagnetic radiation detector positioned downstream of a reactor may detect a fluid exiting the reactor after a deprotection reactor and produce a signal(s). In some embodiments, based at least in part on information derived from the signal(s), a parameter of the system may be modulated prior to and/or during one or more subsequent reactions and/or processes taking place in the solid phase peptide synthesis system. In some embodiments, the methods and systems, described herein, can be used to conduct quality control to determine and correct problems (e.g., aggregation, truncation, deletion) in reactions (e.g., coupling reactions) taking place in the solid phase peptide synthesis system.

Described herein are bioactive peptides that are modified at one or more positions with a PEG moiety. An example of such a PEGylated bioactive peptide is a GHRH analog that is modified at one or more positions with a PEG moiety. Also described are pharmaceutically acceptable salts thereof and pharmaceutical compositions comprising such analogs or salts thereof, as well as methods, kits and uses thereof, for example for inducing or stimulating growth hormone secretion in a subject and for diagnosing, preventing or treating GH-deficient conditions in a subject.

Described herein are bioactive peptides that are modified at one or more positions with a PEG moiety. An example of such a PEGylated bioactive peptide is a GHRH analog that is modified at one or more positions with a PEG moiety. Also described are pharmaceutically acceptable salts thereof and pharmaceutical compositions comprising such analogs or salts thereof, as well as methods, kits and uses thereof, for example for inducing or stimulating growth hormone secretion in a subject and for diagnosing, preventing or treating GH-deficient conditions in a subject.

The present invention concerns compositions comprising and methods of identification and use of imaging agents. The imaging agents comprise a growth hormone secretagogues having a conjugated fluoride. The imaging agents of the present invention may be used for detection, diagnosis and/or staging of prostate or other forms of cancer, and may also be used for cardiac disease.

The present invention concerns compositions comprising and methods of identification and use of imaging agents. The imaging agents comprise a growth hormone secretagogues having a conjugated fluoride. The imaging agents of the present invention may be used for detection, diagnosis and/or staging of prostate or other forms of cancer, and may also be used for cardiac disease.

The present invention relates to a method of treating a transient impairment of the motility of the gastrointestinal system resulting from postoperative ileus in a patient wherein said method includes the step of administering a therapeutically effective amount of a peptidyl analog of ghrelin to said patient.

The present invention relates to a method of treating a transient impairment of the motility of the gastrointestinal system resulting from postoperative ileus in a patient wherein said method includes the step of administering a therapeutically effective amount of a peptidyl analog of ghrelin to said patient.

Provided are macrocyclic compounds having one or more transmembrane segment-thermoresponsive segment moiety. Also provided are dimers comprising two macrocyclic units, which have one or more transmembrane segment-thermoresponsive segment moiety, joined by one or more crosslinking moieties. The macrocyclic compounds and macrocyclic units have a macrocyclic backbone comprise alternating alpha amino acid and meta-aminobenzoic acid moieties. The macrocyclic compounds and dimers can be used to deliver a cargo (e.g., cell-interacting agents such as, for example, drugs and cryoprotectants) to, for example, an organ, tissue, or an individual, A cargo may be encapsulated in lipid vesicles.

Provided are macrocyclic compounds having one or more transmembrane segment-thermoresponsive segment moiety. Also provided are dimers comprising two macrocyclic units, which have one or more transmembrane segment-thermoresponsive segment moiety, joined by one or more crosslinking moieties. The macrocyclic compounds and macrocyclic units have a macrocyclic backbone comprise alternating alpha amino acid and meta-aminobenzoic acid moieties. The macrocyclic compounds and dimers can be used to deliver a cargo (e.g., cell-interacting agents such as, for example, drugs and cryoprotectants) to, for example, an organ, tissue, or an individual, A cargo may be encapsulated in lipid vesicles.