摘要:
A nonhuman transgenic mammal is described whose genome comprises a promoter construct operably linked to a heterologous DNA encoding an epithelial sodium channel β subunit, wherein said promoter construct directs expression of the epithelial sodium channel β subunit in lung epithelial cells of said animal, and wherein said transgenic mammal has increased lung mucus retention as compared to the corresponding wild-type mammal. The animal is useful in screening compounds for activity in treating lung diseases such as cystic fibrosis and chronic obstructive pulmonary disease.
摘要:
A nonhuman transgenic mammal is described whose genome comprises a promoter construct operably linked to a heterologous DNA encoding an epithelial sodium channel β subunit, wherein said promoter construct directs expression of the epithelial sodium channel β subunit in lung epithelial cells of said animal, and wherein said transgenic mammal has increased lung mucus retention as compared to the corresponding wild-type mammal. The animal is useful in screening compounds for activity in treating lung diseases such as cystic fibrosis and chronic obstructive pulmonary disease.
摘要:
The present invention is directed to a method of stimulating ciliary beat frequency to promote mucociliary or cough clearance of retained mucus secretions from the lungs, sinuses, upper airways, ears, eyes, genito-urinary tract, spermatozoa, ovaries, fallopian tubes, neutrophils, and macrophages of a patient. The method comprises administering uridine triphosphates, adenosine triphosphates, cytidine triphosphates, or dinucleoside tetraphosphates and the derivatives thereof to an affected body of a patient, to treat dysfunction of the mucociliary clearance system as a result of impaired ciliary movement in the patient.
摘要:
Compounds of the general formula P1-L-P2; wherein “P1” is a pyrazinoylguanidine sodium channel blocker, “L” is a linking group, and “P2” is either (i) a pyrazinoylguanidine sodium channel blocker or (ii) a P2Y2 receptor agonist, are disclosed. Pharmaceutical formulations containing the same and methods of use thereof to hydrate mucosal surfaces such as airway mucosal surfaces are also disclosed.
摘要:
Compounds of the general formula P1-L-P2; wherein “P1” is a pyrazinoylguanidine sodium channel blocker, “L” is a linking group, and “P2” is either (i) a pyrazinoylguanidine sodium channel blocker or (ii) a P2Y2 receptor agonist, are disclosed. Pharmaceutical formulations containing the same and methods of use thereof to hydrate mucosal surfaces such as airway mucosal surfaces are also disclosed.
摘要:
A method of facilitating the obtaining of a mucus sample from at least one lung of a subject comprises administering to at least one lung of the subject, in an amount effective to hydrate lung mucous secretions and/or stimulate cilia beat frequency therein, uridine 5'-triphosphate, an active analog thereof, or a pharmaceutically acceptable salt of either thereof, and, optionally, concurrently administering to said at least one lung a physiologically acceptable salt in an amount effective to hydrate lung mucus secretions therein. A sputum or mucus sample is then collected from said at least one lung, which sample can then be analyzed for lung disease. Pharmaceutical compositions useful for carrying out the method comprise UTP or a salt thereof, alone or in combination with a physiologically acceptable salt, or a pharmaceutically acceptable salt of either thereof. The composition may be a liquid/liquid suspension composition or a dry powder composition.
摘要:
A pharmaceutical formulation comprises, in an amount effective to hydrate lung mucous secretions, a compound of Formula (I): ##STR1## wherein n is from 1 to 6;X is --OH or --SH;A and B are each independently selected from the group consisting of: ##STR2## wherein R is H or Br; or a pharmaceutically acceptable salt thereof, in a pharmaceutically acceptable carrier. A method of hydrating mucous secretions in the lungs of a subject in need of such treatment, comprising administering to the lungs of the subject a compound of Formula I as given above, is also disclosed.
摘要:
Chronic obstructive airway diseases are treated by administering an osmotically active compound such as a salt, sugar, sugar alcohol, or organic osmolyte to the afflicted airway surface. The compound may be administered as a liquid or dry powder aerosol formulation. Diseases that can be treated by the method include cystic fibrosis, chronic bronchitis, and ciliary dyskinesia. The formulations of the invention can also be used in conjunction with other active agents such as bronchodilators, sodium channel blockers, antibiotics, enzymes, or purinoceptor agonists on airway surfaces.
摘要:
Chronic obstructive airway diseases are treated by administering an osmotically active compound such as a salt, sugar, sugar alcohol, or organic osmolyte to the afflicted airway surface. The compound may be administered as a liquid or dry powder aerosol formulation. Diseases that can be treated by the method include cystic fibrosis, chronic bronchitis, and ciliary dyskinesia. The formulations of the invention can also be used in conjunction with other active agents such as bronchodilators, sodium channel blockers, antibiotics, enzymes, or purinoceptor agonists on airway surfaces.
摘要:
A method of hydrating nasal airway surfaces in a subject in need of such treatment comprises topically applying a sodium channel blocker to a nasal airway surface of the subject in an amount effective to inhibit the reabsorption of water by the surface. The channel blocker may be a pyrazinoylguanidine sodium channel blocker, such as benzamil, phenamil, amiloride, or a pharmaceutically acceptable salts thereof. The method may further comprise the step of topically applying a P2Y2 receptor agonist to a nasal airway surface of the subject in an amount effective to stimulate chloride secretion by the nasal airway surface. In a preferred embodiment, the sodium channel blocker is a covalent conjugate of a pyrazinoylguanidine sodium channel blocker and a non-absorbable carrier moiety (e.g., albumin, polyethylene glycol). Such compounds may also be administered to other mucosal surfaces where it is desired to inhibit the reabsorption of water.