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30 results about "C-type natriuretic peptide" patented technology

View/Edit Mouse. Natriuretic peptide precursor C, also known as NPPC, is a protein that in humans is encoded by the NPPC gene. The precursor NPPC protein is cleaved to the 22 amino acid peptide C-type natriuretic peptide (CNP).

Method and composition for treatment of skeletal dysplasias

The present invention relates to a method for the treatment of skeletal dysplasia by administering to a patient a composition comprising a therapeutically effective amount of at least one C-type natriuretic peptide (CNP).
Owner:HEPACORE LTD

Screening method for alpha-amylase inhibitor producing bacteria

The invention discloses a screening method for alpha-amylase inhibitor producing bacteria, which comprises the following steps of: successively inoculating a bacterial strain into a plate culture medium, a slope culture medium and a fermentation culture medium to be cultured; collecting to obtain fermentation liquor; enabling the fermentation liquor to be centrifuged; diluting supernate with water by 10-100 times to obtain a sample to be tested; respectively adding 30mu l of 0.1U / ml of salivary amylase, 40mu l of 5mmol / l of Gal-G2-alpha-CNP (C-type natriuretic peptide), 90mu l of 50mmol / l of disodium hydrogen phosphate-citrate buffer solution with the pH (potential of hydrogen) being 6.0 and 40mu l of sample to be tested into a 96 plate hole; a control group is characterized in that buffer solution of the equal volume is used for replacing the sample to be tested; Abs405 is detected on a 405nm position by a microplate reader; and a digit is read once in every five seconds until Abs405 is not increased; the sample hole of Abs405, which is lowered by above 30% relatively to the control group, is marked as a positive bacterial strain; and the positive bacterial strain is stored. The screening method provided by the invention is simple and effectively and has a high sensitivity, a great quantity of samples can be screened in a short time, and the detection efficiency is improved.
Owner:ZHEJIANG UNIV OF TECH

Application of C-type natriuretic peptide in preparation of external contraceptive and sperm function detection reagent

The invention relates to an application of C-type natriuretic peptide in preparation of an external contraceptive and a sperm function detection reagent. According to research findings, at the time of ovulation, the C-type natriuretic peptide is expressed at the ampulla on the fertilization position of the fallopian tube, and the chemotactic movement of sperms toward ovum can be induced to finish fertilization. If the genital tract of a female mammal is added with certain amount of C-type natriuretic peptide or the C-type natriuretic peptide and the sperms are incubated, the concentration gradient distribution of C-type natriuretic peptide in the fallopian tube is changed, and the sperms cannot make chemotactic movement toward ovum along the concentration gradient so as to block fertilization. Based on the sperm chemotaxis principle, the invention provides an external contraceptive taking endogenous protein C-type natriuretic peptide as an active ingredient. The contraceptive does not cause toxic or side effects or adverse reaction, is suitable for contraception of most women of childbearing age and convenient to use and has a broad application prospect. Moreover, the sperm function detection reagent prepared from the C-type natriuretic peptide is adopted for identifying the sperm quality, the operation is simple, the result is easy to observe, a small semen volume is required, and the sperm function detection reagent is suitable for in-vitro detection of sperm function.
Owner:CHINA AGRI UNIV

Screening method for alpha-amylase inhibitor producing bacteria

The invention discloses a screening method for alpha-amylase inhibitor producing bacteria, which comprises the following steps of: successively inoculating a bacterial strain into a plate culture medium, a slope culture medium and a fermentation culture medium to be cultured; collecting to obtain fermentation liquor; enabling the fermentation liquor to be centrifuged; diluting supernate with water by 10-100 times to obtain a sample to be tested; respectively adding 30mu l of 0.1U / ml of salivary amylase, 40mu l of 5mmol / l of Gal-G2-alpha-CNP (C-type natriuretic peptide), 90mu l of 50mmol / l of disodium hydrogen phosphate-citrate buffer solution with the pH (potential of hydrogen) being 6.0 and 40mu l of sample to be tested into a 96 plate hole; a control group is characterized in that buffer solution of the equal volume is used for replacing the sample to be tested; Abs405 is detected on a 405nm position by a microplate reader; and a digit is read once in every five seconds until Abs405 is not increased; the sample hole of Abs405, which is lowered by above 30% relatively to the control group, is marked as a positive bacterial strain; and the positive bacterial strain is stored. The screening method provided by the invention is simple and effectively and has a high sensitivity, a great quantity of samples can be screened in a short time, and the detection efficiency is improved.
Owner:ZHEJIANG UNIV OF TECH

A novel natriuretic peptide chimera c with anti-heart failure activity n aa c

The invention discloses a novel natriuretic peptide chimera CNAAc which has the functions of vasodilation, diuresis and myocardial protection. The CNAAc is a novel natriuretic peptide molecule formed by adding an annular structure of ANP (Atriopeptin) and c-terminus on an amino terminal of CNP (C-type Natriuretic Peptide) (as shown in the drawing). The natriuretic peptide chimera has the functions of endothelium-independent vasodilation and strong diuresis. The vasodilation function of the natriuretic peptide chimera CNAAc is greatly superior to that of the natural natriuretic peptide ANP or CNP, and the natriuretic peptide chimera CNAAc possibly exerts the effec through an NPR / cGMP / PKG signal channel. The CNAAc can be used for obviously inhibiting the cardiac hypertrophy of a rat during the generation of the cardiac failure and improving the myocardial enzymology indexes and the cardiac functions of the rat so as to obviously relieve the myocardial infarction degree and the myocardial fibrosis degree of the rat with the cardiac failure. The novel natriuretic peptide chimera with the functions of the myocardial protection and the cardiac failure resistance can be applied to academic research and can be possibly prepared into novel medicines for preventing and treating cardiac failure in clinical application. Thus, the novel natriuretic peptide chimera has good scientific research values and clinical application prospects.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
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