Abstract: An adenocarcinoma detection method based on a protein fragment of WFDC2 protein in a sample originating from a subject, the method comprising determining a presence of adenocarcinoma by comparing a first determination value and a threshold value set in advance, the first determination value being a value derived by dividing a first fragment quantity, which is a quantity of a protein fragment having an amino acid sequence of SEQ ID NO: 1 in the sample as determined by an ELISA method, by a reference quantity defined by a total quantity of WFDC2 protein or a creatinine concentration in the sample as determined by an ELISA method.

Abstract: There is provided a simple and minimally invasive adenocarcinoma detection method. The adenocarcinoma detection method of the present invention includes a step of detecting in vitro a presence or absence of an abnormal cleavage in a specific protein in a test subject-derived sample. The abnormal cleavage in the specific protein is, for example, a cleavage resulting in one or more breaks in a peptide bond in the specific protein and/or a cleavage resulting in a deletion of one or two more amino acid residues at one or more sites of the specific protein. The adenocarcinoma detection method of the present invention includes a step of detecting a presence or amount of a protein having the abnormal cleavage or a decrease in an amount of a normal protein.

Abstract: There is provided a simple and minimally invasive adenocarcinoma detection method. The adenocarcinoma detection method of the present invention includes a step of detecting in vitro a presence or absence of an abnormal cleavage in a specific protein in a test subject-derived sample. The abnormal cleavage in the specific protein is, for example, a cleavage resulting in one or more breaks in a peptide bond in the specific protein and/or a cleavage resulting in a deletion of one or two more amino acid residues at one or more sites of the specific protein. The adenocarcinoma detection method of the present invention includes a step of detecting a presence or amount of a protein having the abnormal cleavage or a decrease in an amount of a normal protein.

Abstract: Provided is a lung adenocarcinoma detection method that is simple and is less invasive. The lung adenocarcinoma detection method of the present invention includes the step of detecting the presence or absence of an abnormal cleavage in kininogen I in a sample collected from a subject in vitro. The abnormal cleavage in kininogen I is, for example, a cleavage that can form at least one cleaved site in a peptide bond in kininogen I and/or a cleavage that causes the deletion of at least one amino acid residue at least one site in kininogen I. The lung adenocarcinoma detection method according to the present invention includes the step of detecting the presence or amount of a protein having the above-mentioned abnormal cleavage or the loss of the amount of a normal protein, and the like.

Abstract: The present invention provides novel peptides with circulation-modulating activity. These peptides are useful as circulation-modulating agents and vasopressors because of their circulation-modulating activity, and can be used for treating diseases of the circulatory system such as myocardial infarction, ischemic heart disease, cerebral infarction, or the like.

Abstract: The present invention provides novel peptides with energy-modulating activity or circulatory function-modulating activity. The peptides of the present invention have energy-modulating activity or circulatory function-modulating activity and thus are useful for treating food consumption disorders and diseases of the circulatory system.

Abstract: The present invention provides various useful polypeptides and so on. In particular, a polypeptide comprising the amino acid sequence represented by SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 8 or SEQ ID NO: 9, a compound or its salt that promotes the activity of said polypeptide, etc. can be utilized as a preventive/therapeutic agent for, e.g., renal edema, dysuria, hyponatremia, syndrome of inappropriate secretion of antidiuretic hormone, hypertension or the like. Furthermore, a compound or its salt that inhibits the activity of the polypeptide is useful as a preventive/therapeutic agent for, e.g., urine storage disorders, polyuria, diabetes insipidus, hypernatremia, metabolic alkalosis, hypokalemia, Cushing syndrome or the like. Moreover, the polypeptide comprising the amino acid sequence represented by SEQ ID NO: 7, SEQ ID NO: 8 or SEQ ID NO: 9 can be utilized as a preventive/therapeutic agent for anorexia, etc., an eating (appetite) stimulant, or the like.