39 results about "Collagen Type III" patented technology

The invention discloses a scar repair material. A preparation method comprises the following steps of: dissolving water-soluble chitosan in water or dissolving chitosan with the deacetylation degree of 75 to 97 percent in an acetic acid aqueous solution under stirring, adding polyoxyethylene sorbitan monolaurate with an emulsifying effect and glycerin with a moisturizing effect, and uniformly mixing to obtain a transparent gel-like solution; and adding polydimethylsiloxane into the gel-like solution under homogenizing, and uniformly mixing to obtain the scar repair material. The scar repair material can actively and passively moisture skin, has a hydration effect on scar skin, has a good repair effect, has an effect of resisting and inhibiting bacteria, has a good effect of resisting and inhibiting the bacteria on the surfaces of scars and outside the scars, has an effect of accelerating skin wound healing, can have a good effect of repairing and protecting fine cracks on the surfacesof the scars, and can inhibit the secretion of collagen type I in keloid skin to reduce the proportion of the collagen type I or collagen type III.

The invention relates to a method for the diagnosis of non-alcoholic steatohepatitis (NASH), for determining the activity, the stage, or the severity of NASH or for classifying a subject as a potential receiver or non receiver of a treatment of NASH using circulating miRNAs and other bood circulating markers of liver damage, e.g. alpha 2 macroglobulin, HbA1c, N-terminal pro-peptide of collagen type III, miR-34 and miR-200. It also relates to a kit for implementing the method of the invention, and the compounds for use in a method for the treatment of NASH, wherein the subject to be treated isidentified, evaluated or classified according to the method of the invention.

Provided herein are methods of diagnosis or of quantitation of fibrosis. An immunoassay is conducted to measure neo-epitope containing protein fragments of collagen type III, collagen type I, collagen type IV, collagen type V, or collagen type VI, elastin, biglycan, decorin, lumican, versican, perlecan, neurocan, brevican, fibromodulin, serglycin, syndecan, betaglycan, vimentin, or C-reactive protein naturally present in a biofluid sample obtained from a patient. An above normal elevation of the measured protein fragments in the patient is associated with the presence or extent of fibrosis.

The present invention identified a high affinity binding sequence in collagen type III for the collagen-binding integrin I domains. Provided herein are the methods used to characterize the sequence, the peptides comprising this novel sequence and the use of the peptides in enabling cell adhesion. Also provided herein are methods to identify specific integrin inhibitors, sequences of these inhibitors and their use in inhibiting pathophysiological conditions that may arise due to integrin-collagen interaction.

The invention belongs to the field of cosmetics and particularly relates to an anti-aging composition and preparation and application thereof. The anti-aging composition is prepared from the following ingredients in parts by weight: 1 to 3 parts of hydrolyzed pearl powder, 1 to 3 parts of dioscorea villosa root extract, 0.5 to 2 parts of acetyl hexapeptide-8, 0.5 to 2 parts of acetyl octapeptide-3 and 0.5 to 2 parts of nonapeptide-1. Experiments prove that the anti-aging composition disclosed by the invention has an extremely obvious removing effect on quiescent wrinkles, dynamic wrinkles and posture extrusion wrinkles, meanwhile can obviously promote multiplication of human skin fibroblast, extremely obviously promotes synthesis of I and III type collagen and extremely obviously inhibits expression of MMP1 and MMP3.

Provided is a monoclonal antibody specifically reactive with a C-terminal neo-epitope of PIIINP comprised in a C-terminal amino acid sequence CPTGXQNYSP-COOH (SEQ ID NO: 4) in which X is Gly or Pro, and where the monoclonal antibody does not recognize or bind an elongated version of the C-terminal amino acid sequence CPTGXQNYSPQZ-COOH (SEQ ID NO: 5), in which Z is absent or is one or more amino acids of the sequence of collagen type III. Also provided is a method of immunoassay for detecting in a biological sample the C-terminal neo-epitope of PIIINP generated by N-protease cleavage of intact type III procollagen, by contacting the sample with the monoclonal antibody, and determining the amount of binding of the antibody.

The invention discloses a method for preparing a medical III type collagen, which is characterized by comprising the following steps of: pre-treating fresh newborn kip as a raw material and then extracting a mixture of I type and II type collagens by using a pepsin degradation limiting method and a salting out method; dissolving the mixture with 1.5 mol / L NaCl and 0.05mol / L Tris buffer solution the pH value of which is 7.5 for 2-5 times to remove most of I type collagen; heating the mixture with 2-6mol / L guanidine hydrochloride and 0.05mol / L Tris-HCl buffer solution the pH value of which is 7.5 in a water bath with the temperature of 45-95 DEG C for 30-60 minutes to modify the collagens; reducing the temperature and the concentration of the guanidine hydrochloride; renaturing the II type collagen after 2-6 hours; and centrifuging the mixture at high speed to obtain a III type collagen.

Compositions and methods using an engineered cardiac fibroblast-derived 3-dimensional extracellular matrix (ECM) are disclosed. The ECM includes the structural proteins fibronectin, collagen type I, collagen type III, and elastin, and from 60% to 90% of the structural proteins present in the engineered extracellular matrix are fibronectin. The compositions, which can be used to treat cardiac disease or ischemic disease or injury, are injectable compositions, where the ECM is diced into small fragments or lyophilized into a powder. The disclosed methods include a method of treating ischemic disease or injury by contacting a cell free patch made from the ECM with the injured tissue, without the concomitant delivery of therapeutic cells, and a method of treating ischemic limb injury by contacting a patch, either by itself or seeded with therapeutic cells, with the injured limb tissue.

The invention discloses an application of glycosyl modified polyphenol compounds as drugs for relieving paraquat poisoning and treating pulmonary fibrosis. The glycosyl modified polyphenol compounds have the structure shown in the description. The glycosyl modified polyphenol compounds have a good oxidation resistance function and a lung protection function and have a notable protection function on lung injury caused by paraquat, and a mechanism is related with reduction of formation of oxygen radicals, relieving of oxidative stress and inflammatory reaction, increase of content of GSH in blood serum and SOD in lung tissue and reduction of content of MDA and HYP in lung tissue. The glycosyl modified polyphenol compounds can effectively inhibit bleomycin-induced pulmonary fibrosis of mice,and the mechanism is related with reduction of expression of TGF-beta 1, IL-6, alpha-SMA, P-smad2, type I collagen and type III collagen in lung tissue, increase of content of GSH and SOD in blood serum and reduction of the content of HYP in lung tissue.