1136 results about "Abnormal alkaline phosphatase" patented technology

A method for detecting single copies of a gene in-situ using brightfield microscopy is used in detection of nucleic acid sequences. Probes are directly or indirectly labeled with alkaline phosphatase with NBT/BCIP used as the chromogen.

The present invention provides methods of improving the osteogenic and/or chondrogenic activity of a bone matrix, e.g., a dermineralized bone matrix (DBM), by exposing the bone matrix to one or more treatments or conditions. In preferred embodiments the bone matrix is derived from human bone. The treatment or condition may alter the structure of the bone matrix and/or cleave one or more specific proteins. Cleavage may generate peptides or protein fragments that have osteoinductive, osteogenic, or chondrogenic activity. Preferred treatments include collagenase and various other proteases. The invention further provides improved bone and cartilage matrix compositions that have been prepared according to the inventive methods and methods of treatment using the compositions. The invention further provides methods of preparing, testing, and using the improved bone matrix compositions. Ona assay comprises exposing relatively undifferentiated mesenchymal cells to a bone matrix composition and measuring expression of a marker characteristic of osteoblast or chondrocyte lineage(s). Increased expression of the marker relative to the level of the marker in cells that have been exposed to a control matrix (e.g., an inactivated or untreated matrix) indicates that the treatment or condition increased the osteogenic and/or chondrogenic activity of the bone matrix. Suitable cells include C2C12 cells. A suitable marker is alkaline phosphatase. The inventive methods increase the osteogenic and/or chondrogenic activity of human DBM when tested using this assay system.

Methods and apparatus for evaluating the quality of an environment or process by measuring light emitted from a bioluminescent sample containing ATP, ADP, or alkaline phosphatase. The apparatus comprises a sample collection and analysis system used to collect a sample, mix reagents, react the sample, and collect it in a measurement chamber. The system includes an instrument having a photon detection assembly for use with the sample testing device and one or more probe assemblies that optically cooperate with the instrument. The instrument includes a dark chamber with a reflective interior surface which may be concave or preferably spherical, and a photon detection sensor such as a multi-pixel photon counter sensor. A substantially transparent portion of the probe assembly, and liquid contained therein, focus bioluminescence toward the photon detection sensor.

The invention relates to pharmaceutical compositions suitable for treating or curing clinical complications mediated by endotoxin, including sepsis. The compositions contain components suitable for detoxifying endotoxin rendering it less deleterious to mammals such as humans, in particular to patients with reduced host-defence resistance. The invention also relates to pharmaceutical compositions suitable for stimulating bone formation, e.g. for mending broken bone or for prophylaxis or therapy of metabolic bone diseases such as osteoporosis and osteomalacia and pharmaceutical compositions for decreasing or inhibiting undesired bone formation. The pharmaceutical compositions according to the invention are directed at modulating phosphatase activity in vivo.

Neural stem cells which can be provided stably and which are free from the problem of compatibility in transplantation are disclosed. The stem cells are separated from human amniotic mesenchymal cell layer and express vimentin, nestin and BrdU which are markers of neural stem cells. The stem cells can also be differentiated to cells expressing alkaline phosphatase, that is, osteocytes, and to cells expressing collagen type II, that is, chondrocytes.

The invention discloses a CRISPR/Cas9 system-containing targeted knockout vector and adenovirus and applications thereof. The targeted knockout vector is prepared through the following steps: after a pX330 U6-Chimeric_BB-CBh-hSpCas9 plasmid is subjected to enzyme digestion and filling-in by using EcoRI and SacII, connecting the pX330 U6-Chimeric_BB-CBh-hSpCas9 plasmid with a pAdTrack-CMV plasmid subjected to enzyme digestion and filling-in by using BstXI; after the obtained product is linearized by using BbsI, connecting the obtained product to a specific target sequence of a desired gene; and after the obtained object is linearized by using PmeI and dephosphorylated by using CIAP alkaline phosphatase, recombining the obtained product with a pAdEasy-1 plasmid. The targeted knockout vector can mutate gene sequences in target sequence areas, and the mutation rate is high, up to 30.6-45.8%, therefore, the targeted knockout vector can be used for gene site-directed mutation, and lays a foundation for gene therapy.

The present invention relates to the use of tissue non-specific alkaline phosphatase (TNAP) as a marker for identifying and/or isolating adult multipotential cells. The present invention also relates to cell populations enriched by methods of the present invention and therapeutic uses of these cells.

A bone targeted alkaline phosphatase comprising a polypeptide having the structure: Z-sALP-Y-spacer-X-W_n-V, wherein sALP is the extracellular domain of the alkaline phosphatase; wherein V is absent or is an amino acid sequence of at least one amino acid; X is absent or is an amino acid sequence of at least one amino acid; Y is absent or is an amino acid sequence of at least one amino acid; Z is absent or is an amino acid sequence of at least one amino acid; and W_n is a polyaspartate or a polyglutamate wherein n=10 to 16. Kits and methods of use thereof.

Methods are disclosed for generating HLA homozygous parthenogenetic human stem cell (hpSC-Hhom) lines from both HLA homozygous and HLA heterozygous donors. These hpSC-Hhom lines demonstrate typical human embryonic stem cell morphology, expressing appropriate stem cell markers and possessing high levels of alkaline phosphatase and telomerase activity. Additionally, injection of these cell lines into immunodeficient animals leads to teratoma formation. Furthermore, in the case of HLA heterozygous donors, the hpSC-Hhom lines inherit the haplotype from only one of the donor's parents. SNP data analysis suggests that hpSC-Hhom lines derived from HLA heterozygous oocyte donors are homozygous throughout the genome as assessed by single-nucleotide polymorphism (SNP) analysis. The protocol as disclosed minimizes the use of animal-derived components, which makes the stem cells more practical for clinical application.

The invention relates to a chemiluminescence quantitative detection kit for procalcitonin, and a preparation method and detection method thereof. The kit comprises a procalcitonin series standard substance, a magnetic separation reagent (magnetic particle suspension coupled with streptavidin), a first reagent (anti-procalcitonin monoclonal antibody solution containing biotin N-hydroxysuccinimide ester label) and a second reagent (anti-procalcitonin monoclonal antibody solution containing alkaline phosphatase label). The sensitivity of the kit prepared from the magnetic particle suspension coupled with streptavidin, anti-procalcitonin monoclonal antibody solution containing biotin N-hydroxysuccinimide ester label and anti-procalcitonin monoclonal antibody solution containing alkaline phosphatase label is up to 0.008ng/ml; and the kit has the advantages of high accuracy, high precision, no need of prediluting the sample, and wide detection range, and is simple and time-saving to operate.

A precursor for the construction of chelated metal conjugates which demonstrate improved assay performance and utility in minimizing non-specific binding while maintaining specificity for target molecules is disclosed. The precursor has tridentate functionality towards multivalent ions such as iron and nickel and contains a diacetyl glycine group covalently linked via an amide to a molecule such as a proteinaceous molecule providing a primary amide group for amide bond formation. The precursor is preferably prepared in monomeric form by reacting nitrilotriacetic acid or a salt thereof in an aqueous medium at an alkaline pH of at least 8 with a proteinaceous molecule containing a primary amine group in the presence of a carbodiimide. The proteinaceous molecule may be bovine serum albumin or an enzyme such as alkaline phosphatase or horseradish peroxidase.

The present invention provides methods, compositions, and kits for the treatment of neurocutaneous syndromes, such as neurofibromatosis type I; disorders associated with overactivation of FGFR3, such as achondroplasia; bone or cartilage disorders; or vascular smooth muscle disorders; or for the elongation of bone. In some embodiments, the present invention provides polypeptides having an alkaline phosphatase peptide fused to an Fc domain of an immunoglobulin or a natriuretic peptide fused to an Fc domain of an immunoglobulin. Such polypeptides can be administered to subjects, e.g., subcutaneously, to treat a neurocutaneous syndrome, a disorder associated with overactivation of FGFR3, a bone or cartilage disorder, or a vascular smooth muscle disorder, or to elongate bone. The invention also features nucleic acid molecules encoding such polypeptides and the use of the nucleic acid molecules for treating neurocutaneous syndromes, disorders associated with overactivation of FGFR3, bone or cartilage disorders, or vascular smooth muscle disorders, or for elongating bone.

The invention discloses and relates to a stabilizing agent of alkaline phosphatase or a marker of the alkaline phosphatase, a preparation method of the stabilizing agent and a method for stabilizing the alkaline phosphatase or the marker of the alkaline phosphatase by using the stabilizing agent. The invention also relates to the alkaline phosphatase or a marker reagent of the alkaline phosphatase and a preparation method thereof. The invention also relates to a kit which comprises the stabilizing agent and the alkaline phosphatase or the marker of the alkaline phosphatase disclosed by the invention. The stabilizing agent disclosed by the invention can stably preserve the alkaline phosphatase or the marker of the alkaline phosphatase for a long time, so that the retention period of the alkaline phosphatase or a marker solution of the alkaline phosphatase is prolonged.

The present invention relates to a method for quickly determining cAMP content or an adenylate cyclase activity in a biological sample containing non-cyclic adenine nucleotides without the use of radioactive agents.Particularly, the present invention provides a method of determining cAMP content or an adenylate cyclase activity in a biological sample containing non-cyclic adenine nucleotides selected from the group consisting of cAMP produced by endogenous adenylate cyclase, and AMP, ATP, ADP and a mixture thereof, which comprises (1) combining a biological sample with effective amounts of apyrase, adenosine deaminase and alkaline phosphatase to enzymatically remove non-cyclic adenine nucleotides other than cAMP, and glucose-6-phosphate in the sample; (2) enzymatically converting cAMP into AMP; (3) determining an amount of AMP without the use of radioactive agents, and a kit to carry out the method.

The invention relates to a preparation method of a dental implant and a composite surface thereof. In the dental implant, medical titanium or titanium alloy is used as a substrate, and porous morphology is prepared on the surface while polydopamine and hydroxyapatite are deposited to obtain a dental implant composite surface with good bioactivity. In the invention, a uniform multi-layer pore oxidation film is quickly formed on the surface of the titanium substrate to obtain nano porous morphology; and by enabling a thin layer of protein analogue (polydopamine) to tightly adhere to the surface, the surface hydrophilicity and the corrosion resistance of the dental implant can be improved. Finally, the hydroxyapatite deposition is induced on the surface to obtain a three-layer composite surface; moreover, the nano porous composite surface can effectively reinforce the adhesion and spreading of osteoblast on the implant surface as well as the alkaline phosphatase activity, early bone integration of the implant is accelerated, and firm combination of the material and the organism interface is realized so as to improve the stability and success rate of the implant.

A cell-based assay system in which the detection of the reporter gene activity, or secreted alkaline phosphatase (SEAP), is dependent upon the protease activity of the Hepatitis C virus NS3 gene product. This system can be used to assess the activity of candidate protease inhibitors in a mammalian cell-based assay system. The assay system is simpler than previously described assays due to the use of SEAP which allows the reporter gene activity to be quantified by measuring the amount of secreted gene product in the cell media by monitoring the conversion of luminescent or calorimetric alkaline phosphatase substrate.

The invention relates to a quantitative detection kit for NSE and a preparation method and application of the quantitative detection kit. The kit comprises a calibrator, a magnetic separation reagent, an enzyme reactant, a stable reinforcing agent and a chemiluminiscent substrate, wherein the calibrator is obtained by treating NSE antigen through a reducing agent solution and diluting the NSE antigen to a buffer solution containing a nonionic surfactant; the magnetic separation reagent is obtained by immunofixation of a biotinylation antibody and streptavidin magnetic particles; the enzyme reactant comprises a NSE tracing antibody marked by alkaline phosphatase; and the stable reinforcing agent comprises a multicomponent immune compound interfered by an anti-heterophilic antibody. The invention further relates to a preparation method of the kit and a method of applying the kit to quantitatively detect a tumor marker NSE. The kit is reliable in performance, high in flexibility, and wide in linear range, and matched up with an automatic instrument for use. At present, the kit has already obtained a third registration certificate of a diagnostic reagent in SFDA (State Food and Drug Administration).

The invention relates to a chemical illumination immunity analysis method for checking human cTnT, which uses acridiniumester and/or alkaline phosphatase as label. The immunity reaction uses two-site immunoassay and/or competition law. The immunity reaction can use streptavidin-biotin two-site immunoassay to improve sensitivity. The invention uses NaOH and H2O2 as acridiniumester illumination initiating agent, uses 1, 2-dioxo cyclohexane derivative (adamantine derivative) as the illumination substrate of alkaline phosphatase, and uses fluorescein derivative and surface activator as illumination renforcing agent. The solid carrier is orifice plate, macromolecule polymer tube (ball) and ferriferrous oxide magnetic particles or the like.

The invention relates to an enzyme immunosensor based on chitosan and nano-gold, and by using the specific combination of the monoclonal antibody of the cell wall of mycobacterium trberculosis with mycobacterium trberculosis, the enzyme immunosensor is applicable to the rapid detection of mycobacterium trberculosis in milk. The characteristic is that the enzyme immunosensor for detecting mycobacterium tuberculosis is prepared by the following steps: modifying the surface of a glassy carbon electrode through electrochemical deposition method by a mixed solution of chitosan gel, nano-gold solution, and goat anti-mouse antibody labeled by alkaline phosphatase; and fixing the mycobacterium trberculosis monoclonal mouse antibody on the surface of the glassy carbon electrode modified by the goat anti-mouse-chitosan-nano-gold film which is labeled by alkaline phosphatase through the specific antigen-antibody reaction. Quantitative analysis is performed by detecting the electric signal changegenerated before and after the incubation reaction of mycobacterium trberculosis and the modified electrode through differential pulse voltammetry. The preparation method of the sensor is simple, andthe sensor has the advantages of high sensitivity, short detection time, and simple operation, and is applicable to the method for the rapid detection of mycobacterium trberculosis.

The invention relates to technical field of immunodetection, particularly relates to a kit for joint detection of ovarian cancer tumor markers HE4 and CA125 as well as a preparation method and application thereof. According to the kit provided by the invention, silanization treatment is performed on horse radish peroxidase, so that the possibility that the horse radish peroxidase becomes a phosphoric acid receptor in a process of catalyzing a chemiluminescent substrate to emit light by a alkaline phosphatase is blocked, the problem that the existence of horse radish peroxidase disturbs the cataluminescence of the alkaline phosphatase is solved, so that the size of the light intensity caused by the alkaline phosphatase on magnetic particles is detected by chemiluminescent substrate liquid first, the size of chromogenic absorbancy caused by the horse radish peroxidase is detected by chromogenic substrate liquid and the simultaneous detection on HE4 and CA125 of a sample is realized. Thekit provided by the invention has the advantages that the detection process is simple, the reaction time is short, the reagent dose is less, the cost is reduced, the sensitivity is high, the repeatability and stability of the reagent are good.

The invention discloses a kit using a magnetic particle chemiluminiscence method to measure osteocalcin (BGP) content. The kit comprises a calibration article, a quality control article, a resisting reagent, a magnetic particle reagent and a light-emitting substrate, wherein the resisting reagent comprises an antibody marked by fluorescein isothiocyanate and coated by osteocalcin and an antibody marked by alkaline phosphatase and osteocalcin; the magnetic particle reagent is used for connecting magnetic particles with anti-goat FITC. The kit has the advantages that the chemiluminiscence technology is combined with immune magnetic particles, a reaction system close to homogeneous phase is provided, a one-step reaction mode is used, the detection sensitivity and precision of the kit are increased greatly, the detection range of the kit is increased, reaction time is shortened greatly, time from sample feeding to a detecting result is less than 35 minutes, and the detection speed of the kit is evidently higher than that of similar kits; the kit can detect multiple samples at the same time on full-automatic chemiluminescence apparatus, high-throughput and fast measuring of the osteocalcin is achieved, the kit is high in accuracy and high in specificity, and the accuracy and detection efficiency of the kit are increased greatly.

The present invention relates to an application of iridoid in the preparation of anti-osteoporosis medicines, which belongs to the medicines technical field. The invention provides an application of iridoid which is shown in a general formula I in the preparation of medicines used for treating and/or preventing osteoporosis. Experiments found that ALP activity in UMR106 cells is taken as guidance for tracing and separating an extract of iridoid possessing general formula I, the extract and each separated component are researched from the aspects of osteoblast propagation and antioxidation activity, the iridoid possessing the general formula I has the effects of substantially promoting alkaline phosphatase activity and osteoblast differentiation, so that the iridoid has anti-osteoporosis effect and can be used for preparing the medicines used for treating or preventing osteoporosis. The component of specnuezhenide and a compound G13 possesses the effects of substantially promoting the alkaline phosphatase activity and osteoblast differentiation, and the specnuezhenide has effects for obviously promoting UMR-106 cell proliferation, a better effect is obtained when the specnuezhenide is used for anti-osteoporosis effect.

The invention provides a sensitive detection method of alkaline phosphatase based on carbon-dots fluorescence ''quenching-recovery''. Carbon dots prepared by a simple hydrothermal method have low toxicity and good water solubility and fluorescent property. In the presence of potassium permanganate, fluorescence of carbon dots is quenched; and with a hydrolysate ascorbic acid or p-aminophenol of alkaline phosphatase (ALP), quenched fluorescence will be recovered again. By high catalytic activity of ALP, a novel fluorescence analysis method is established to realize highly sensitive detection of ALP. The method has advantages of novel principle, high sensitivity, good selectivity and simple and fast operation, and is adopted to avoid interference of false signals in a fluorescence quenching method and widen the application range of carbon dots-based biological detection.