Abstract: Methods for treating uremic cardiomyopathy are provided and include the step of administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. The polypeptide anatagonist can further include a cell penetrating polypeptide. Methods of treating anemia, including anemia-associated with chronic kidney disease, are also provided.

Abstract: Methods for treating obesity are provided and include administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. Methods for reducing adiposity and adipogenesis are also provided and make use of a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject.

Abstract: Methods treating pulmonary hypertension, including pulmonary arterial hypertension, are provided, and include administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. Administration of the polypeptide antagonist reduces pulmonary artery acceleration time, reduces an amount of right ventricular hypertrophy, reduces right ventricular wall thickness, reduces an amount of pulmonary vessel wall thickness, reduces an amount of plexiform lesions in a lung of the subject, reduces an amount of collagen deposition in a pulmonary blood vessel, reduces an amount of collagen deposition in a pulmonary blood vessel media or adventitia, and/or reduces an amount of right ventricular fibrosis. Methods of reducing pulmonary vessel wall thickness are also provided and include the administration of the polypeptide antagonist of a Na/K ATPase/Src receptor complex.

Abstract: Methods for treating retinopathy are provided and include administering an effective amount of a polypeptide antagovist of a Na/K ATPase/Src receptor complex to a subject. The retinopathy can include diabetic retinopathy. Methods of decreasing angiogenesis in a retinal vasculature are also provided and include the step of administering, such as by intravitreous injection, a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof.

Abstract: Methods treating pulmonary hypertension, including pulmonary arterial hypertension, are provided, and include administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. Administration of the polypeptide antagonist reduces pulmonary artery acceleration time, reduces an amount of right ventricular hypertrophy, reduces right ventricular wall thickness, reduces an amount of pulmonary vessel wall thickness, reduces an amount of plexiform lesions in a lung of the subject, reduces an amount of collagen deposition in a pulmonary blood vessel, reduces an amount of collagen deposition in a pulmonary blood vessel media or adventitia, and/or reduces an amount of right ventricular fibrosis. Methods of reducing pulmonary vessel wall thickness are also provided and include the administration of the polypeptide antagonist of a Na/K ATPase/Src receptor complex.

Abstract: Methods for treating uremic cardiomyopathy are provided and include the step of administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. The polypeptide anatagonist can further include a cell penetrating polypeptide. Methods of treating anemia, including anemia-associated with chronic kidney disease, are also provided.

Abstract: Methods for treating retinopathy are provided and include administering an effective amount of a polypeptide antagovist of a Na/K ATPase/Src receptor complex to a subject. The retinopathy can include diabetic retinopathy. Methods of decreasing angiogenesis in a retinal vasculature are also provided and include the step of administering, such as by intravitreous injection, a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof.

Abstract: Methods for treating obesity are provided and include administering a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject in need thereof. Methods for reducing adiposity and adipogenesis are also provided and make use of a polypeptide antagonist of a Na/K ATPase/Src receptor complex to a subject.

Abstract: A method for regulating Src and its downstream signaling pathway which includes binding between Src and Na+/K+-ATPase is disclosed. The Na+/K+-ATPase/Src complex is a functional receptor for cardiotonic steroids such as ouabain. Also disclosed are Src inhibitors or activators which include either Na+/K+-ATPase or Src that interfere with the interaction between the Na/K-ATPase and Src, act via a different mechanism from ATP analogues, and is pathway (Na+/K+-ATPase) specific. Also disclosed is use of said Src-modulating peptides for treatment of cancer.

Abstract: Methods and compositions for detecting, treating, characterizing, and diagnosing interstitial lung and/or fibrotic diseases are described.

Abstract: A novel Src inhibitor that targets the Na/K-ATPase/Src receptor complex and antagonizes ouabain-induced protein kinase cascades and uses thereof are disclosed.

Abstract: Methods and compositions for detecting, treating, characterizing, and diagnosing interstitial lung and/or fibrotic diseases are described.

Abstract: The present disclosure relates to methods of inhibiting the ATPase activity of Na/K-ATPase without stimulating the receptor function, methods of blocking Na/K-ATPase interaction with Src, methods of inhibiting cell growth, and methods of abolishing ouabain-provoked signaling transduction in the heart of a subject, which includes providing an effective amount of at least one hydroxyl xanthone derivative.

Abstract: The present disclosure relates to methods of inhibiting the ATPase activity of Na/K-ATPase without stimulating the receptor function, methods of blocking Na/K-ATPase interaction with Src, methods of inhibiting cell growth, and methods of abolishing ouabain-provoked signaling transduction in the heart of a subject, which includes providing an effective amount of at least one hydroxyl xanthone derivative.

Abstract: Described herein are assays and complementary cell culture based tests, and uses thereof for determining agonists or antagonists of Na/K-ATPase/Src complex, and methods of treatment therewith.

Abstract: Methods and compositions for detecting, treating, characterizing, and diagnosing interstitial lung and/or fibrotic diseases are described.

Abstract: A method for regulating Src and its downstream signaling pathway which includes binding between Src and Na+/K+-ATPase is disclosed. The Na+/K+-ATPase/Src complex is a functional receptor for cardiotonic steroids such as ouabain. Also disclosed are Src inhibitors or activators which include either Na+/K+-ATPase or Src that interfere with the interaction between the Na/K-ATPase and Src, act via a different mechanism from ATP analogues, and is pathway (Na+/K+-ATPase) specific.

Abstract: A method for regulating Src and its downstream signaling pathway which includes binding between Src and Na+/K+-ATPase is disclosed. The Na+/K+-ATPase/Src complex is a functional receptor for cardiotonic steroids such as ouabain. Also disclosed are Src inhibitors or activators which include either Na+/K+-ATPase or Src that interfere with the interaction between the Na/K-ATPase and Src, act via a different mechanism from ATP analogs, and is pathway (Na+/K+-ATPase) specific.

Abstract: This process relates to a pharmaceutical composition of an Na—K-ATPase ligand which will stimulate Na/K-ATPase signaling in a pharmaceutically acceptable vehicle. In one embodiment, the composition may be used to treat a skin disorder. In another embodiment, the composition may be used to inhibit cardiac fibrosis.

Abstract: A novel Src inhibitor that targets the Na/K-ATPase/Src receptor complex and antagonizes ouabain-induced protein kinase cascades and uses thereof are disclosed.