WO2009145603A1 - Kit molecular de diagnostico de cepas virulentas de helicobacter pylori - Google Patents
Kit molecular de diagnostico de cepas virulentas de helicobacter pylori Download PDFInfo
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- WO2009145603A1 WO2009145603A1 PCT/MX2009/000047 MX2009000047W WO2009145603A1 WO 2009145603 A1 WO2009145603 A1 WO 2009145603A1 MX 2009000047 W MX2009000047 W MX 2009000047W WO 2009145603 A1 WO2009145603 A1 WO 2009145603A1
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- Prior art keywords
- pylori
- kit
- virulence
- strain
- antisense
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6888—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms
- C12Q1/689—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for bacteria
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/16—Primer sets for multiplex assays
Definitions
- Helicobacter pylori infection is a major problem for public health, since it is expensive to find control measures. This supports the need for tools to detect risk factors against this pathology. However, at present there are no commercial microbiological tests that allow virulent strains to be detected.
- this bacterium has been identified at a generic level, through the reaction of the enzyme urease, which allows the colonization of the gastric mucosa, since in the presence of urea, ions Hydrogen and water catalyzes the formation of ammonium and bicarbonate, which neutralizes the hydrogen ions that surround the bacteria and allows their survival in the gastric epithelium (Hazell et al., 1986; Mobley et al., 1988; Megraud et al., 1989 ).
- H. pylori has several virulence factors, which allow it to colonize the gastric mucosa of the stomach and free itself from the host's defense mechanisms. Some of these factors are characteristic of the species and others, of variable presence.
- virulence factors present in all strains, we can mention urease, spiral structure, flagella and adhesins, as well as endotoxin (LPS), in addition the arginase enzyme participates in the evasion of the immune response.
- LPS endotoxin
- the adhesins expressed by the bacteria recognize specific sugars in the epithelial cell.
- the most studied are hemagglutinin N-acetylneuraminillactose and the BabA protein (blood group antigen binding adhesin), the latter allows binding from the bacteria to the Lewis Le B antigen group of the gastric mucosa.
- the bacterium prevents the immune reaction, due to the presence of a specific secretory IgA protease, in addition to the LPS, it has low immunogenic power, which inhibits an effective immune reaction by the host (Muotiala et al., 1992).
- a new gene that has been involved in the pathogenesis of H pylori is the gene that codes for BabAl and BabA2 proteins, which allow to activate and deactivate adhesin synthesis (Gerhard et al., 1996).
- a product based on the microarray technique of MWG Biotech, Inc. for the search of H. pylori is on the market.
- This product consists of 1877 oligonucleotides to recognize H. pylori of strain J99 and 26695.
- 1307 oligonucleotides coincide with both strains, with 295 oligonucleotides specific for H. pylori strain 26695 and 278 oligonucleotides specific for H. pylori strain J99. It does not submit applications for linked invention patents.
- INVIGENE ® The company Invitek developed a kit commercially called INVIGENE ® , for the detection of the H. pylori cagA genotype in stool, being able to determine the presence of active infection of this bacterium
- This device is not related to a patent application invention. This device only allows to establish the presence of the microorganism, but not the virulence of it.
- the Kit is designed for rapid detection of H. pylori using multiple PCR.
- the contained splitters amplify the genes cagA (358 bp), flagellin (152bp), urea C (315bp) and 16S rRNA (llObp).
- the product includes all the reagents necessary for amplification, with the exception of the enzyme Taq polymerase and dNTPs.
- the kit includes the working buffer, the respective positive control, the molecular weight marker, DNAase-free water and specific cleaners. Both splitters and genes used by this Kit are not used in our invention.
- the invention differs from other initiatives, because the invented kit detects prevalent genes associated with virulence.
- Both commercial kits and other related inventions in general, detect the presence of the enzyme urease (characteristic of Helicobacter sp.), Through a positive test visualized by the turn of a pH indicator, which does not necessarily indicate that it is a strain of H. pylori, much less that it is a potentially pathogenic strain.
- kits are not specific, as other helicobacteria present in the biopsy, such as the H. helmannii species, also generate a positive urease reaction, as this is a characteristic associated with the Helicobacter genus.
- Other kits used are based on the detection of serum antibodies against the bacteria.
- patents KR20030031243 and WO2005108995 which are directly related to the present invention, stand out, because said incentives determine the toxicity of H. pylori at the genetic level. But nevertheless, in all these initiatives they are not associated with more than 2 virulence genes and at most one identification sequence, or correspond to difficult techniques to implement.
- This molecular kit differs from existing initiatives, both for the genes it researches, and the reagents it requires.
- Existing initiatives take longer to find the optimal conditions to simultaneously amplify genes associated with virulence, in the few existing initiatives that determine them.
- Other inventions have the disadvantage that the DNA concentration of some biopsy samples does not allow the simultaneous detection of several genes, unlike the present invention.
- the invention has advantages in design and novelty with respect to existing kits.
- the invention can generate a genetic pattern in H. pylori associated with more severe pathologies, an aspect not addressed by any previous initiative.
- the molecular kit for the simultaneous detection of genes associated with virulence and the species allows the investigation of strains of H. pylori with greater capacity for colonization and human infection, and which are associated with severe pathologies derived from chronic infection with H. pylori
- This kit allows the rapid and efficient detection of strains of H. pylori with greater pathogenic potential.
- the invented product has a clear differentiation and superiority with respect to the existing diagnostic methods, since currently, there are no commercial products that detect H. pylori genes from specific strains, and what is even more important, the scarce products include more only one gene associated to virulence and another to specificity.
- the invention relates to a kit for the diagnosis of H. pylori infection, which requires human samples. Subsequently, the kit is applied under a pre-established protocol.
- the kit of this invention is designed for the genetic detection of H. pylori.
- This initiative determines the existence of various virulence genes of these microorganisms, associating with specific sequences.
- there is no initiative that links various identification and virulence genes to At the same time for the diagnosis although there are other similar technologies in the objectives of the detection of this microorganism, there are few tending to determine the existence of various virulence genes of these microorganisms.
- kits contains all the elements for its best performance, such as Taq polymerase, dNTPs, working buffer, respective positive control, molecular weight marker, specific splitters and DNase free water.
- Taq polymerase dNTPs
- working buffer respective positive control
- molecular weight marker e.g., glycerol
- DNase free water e.g., glycerol
- kits are claimed in a large number of inventions, whose only application is aimed at the recognition of specific strains, recognizing at most two genes present in the species.
- the surprising and unexpected of this invention lies in the set of selected genes, in addition this kit is designed to be applied anywhere in the world and in various types of samples.
- This kit has the particularity that can be used for the detection of strains whose distribution is very wide, making it possible to extend the applications of the invention, where virulence rates and their range can be determined.
- the invention we have worked with a group of H. pylori genes of great incidence, and a kit has been prepared based on sequences of strains representative of large geographic areas, so the present initiative is of great incidence in various groups ethnic, responding to an old problem in the diagnosis of H. pylori of high pathogenicity, which remained unresolved until now. With this technology these problems are overcome by generating a solution of wide applicability.
- Another advantageous aspect of this technology is its high reliability, the probability of obtaining consistent and accurate results is certainly high.
- these are attributes specific to each molecular-based test or kit, in this case it is fair to point out that the rigorous selection of the genetic sequences to be replicated are decisive for obtaining accurate results, and the fact that they work with a large number of them, It grants superior comparative advantages over existing tests.
- a new feature given by this invention is its clinical validity, that is, the certainty with which this DNA kit diagnoses, predicting the risk of a disease in clinical practice.
- the clinical validity of this kit offers a favorable test, which includes reagents that give unusual sensitivity.
- the positive predictive value which in other words is the probability that people with positive tests for this test develop a related pathology
- the negative predictive value associated with this tool which is the probability that people with negative results do not manifest the disease
- the kit can detect the presence of a strain of H. pylori and surprisingly what are the virulence genes that the bacteria have. With all these advantages a molecular kit was developed based on detection simultaneous genes associated with virulence in H. pylori: cagA, vacAml, and dupA, which allow the investigation of strains with greater pathogenic capacity.
- the procedure for the detection of this organism is on patient samples, where this microorganism or part of its genetic material is found.
- biopsies of the intestinal tract, faeces, blood, serum, breath, among others can be used, where H. pylori strains with greater pathogenic potential are detected quickly and effectively.
- the physician can make decisions in the therapeutic management of the patient infected with H. pylori.
- kits Another aspect addressed by this invention, and that most existing kits have not solved, is to determine the virulence of strains. Most related inventions are designed for clinical action and not preventive action. With this invention, a permanent problem in the art is solved, which corresponds to the detection of virulent strains. Above all, this kit allows to detect virulent strains, even when the individual does not have clinical symptoms linked to the disease, which is directly correlated with the virulent microorganism.
- This invention is capable of being implemented in any clinical diagnostic laboratory and only basic training of personnel and simple equipment.
- This kit is a real alternative to traditional culture in microbiological diagnostic laboratories, with the advantage of saving time and material. It provides more information for the clinician, than the technologies that are currently available in the market, because it allows the rapid investigation of strains of H. pylori with a greater pathogenic potential.
- kits of the present invention are high incidence genes.
- the proposed molecular examination is done by shortening the time to obtain the result, since traditional culture needs at least one week. Therefore, this technique is seen as the best current alternative to make the diagnosis of pathogenic H. pylori.
- the invention has advantages in the short, medium and long term, so you can increase the quality of life of people by promoting their health and decreasing the progression of chronic H. infection. pylori to more severe gastroduodenal pathologies, with significant impact associated with the diagnosis and treatment of the pathologies caused by H. pylori.
- H. pylori strains present in various samples can now be determined, preferably in gastric biopsies with various gastroduodenal pathologies, or without symptoms linked to this microorganism.
- very small concentrations of DNA lng / ⁇ l are determined in this invention, which are sufficient for the detection of H. pylori genes.
- the proposed initiative determines the optimal conditions to simultaneously amplify two or more genes associated to virulence in strains of H. pylori present in stool samples, fluids or gastric biopsies.
- the physician does not have the support of the bacteriological laboratory to make a decision about when to start an H. pylori eradication treatment and what would be the most recommended therapy to increase the chances of success in eradication.
- the clinician uses the urease test for the detection of the bacteria, for example, from the gastric sample, however a positive reaction only indicates the presence of Helicobacter sp. It is not a specific species and much less indicates its pathogenic potential.
- the invention contemplates a process and a product that allows, in several analysis steps, to identify a microorganism present in a sample, in addition to determining the virulence of the specific strain.
- the processing scheme is as follows:
- Total DNA from gastric biopsies, pure cultures, body fluids or feces is generally based on the treatment of the sample with proteinase K followed by alcohol precipitation (with ethanol-chloroform or isopropanol). The genotyping of H.
- pylori strains by multiple PCR consists in the amplification of several genes at the same time, for this purpose lyophilized PCR spheres are used, which contain all the reagents necessary for amplification (dNTPs, Taq polymerase, specific cleaners, reaction buffer, MgCl 2 ), which must be reconstituted with the appropriate amount of water at a final volume in a range between 15-30 ⁇ L.
- the required hybridization temperature range is 40 to 55 0 C and is used between 30 and 45 PCR cycles.
- ready-to-split PCR spheres Amersham Biosciences ®
- in a range of 0.1 to 10 ng / ⁇ L of DNA previously extracted
- thermocycler with programmable thermal control, according to the following program: • the procedure involves an initial denaturation in a temperature range between 80 to 98 0 C, for a period of time between 1 and 15 minutes,
- the hybridization is carried out in a temperature range between 45 to 60 0 C for a period of 1 - 70 seconds, • the initial extension stage is performed at a temperature between 65 - 75 0 C for a period of time from 1 to 60 seconds,
- the final extension stage is carried out at the same temperature range as the initial extension, but the period of time comprises from 3 to 10 min.
- the kit contains negative controls that can be used during all stages, particularly during amplification (Human genome DNA). It also has positive controls (DNA H. pylori strain ATCC 43504), which are a DNA sequence as tempered, these controls are run in parallel.
- the products of this amplification are analyzed by 3% agarose gel electrophoresis (w / v) and stained with ethidium bromide (0.5 ⁇ g / ⁇ L, or syber green, figure N ° 2).
- the positive controls used are the multiple PCR amplification pattern for the cagA and vacAml genes of the genomic DNA, derived from control strains of H. pylori ATCC43504.
- the amplified fragments are analyzed by electrophoresis in 3% agarose gels, followed by staining with ethidium bromide and visualization with UV transilluminator.
- the invention comprises a kit as a ready-to-use product, which is capable of simultaneously detecting 5 genes: one identifying Helicobacter pylori, three virulence genes; vacAml, cagA and dupA and a couple of primers, which determine the quality of DNA extraction (universal Eubacteria 16-23S gene).
- the invention also includes a kit and a method that contemplates reagents and steps, thus the following elements are included:
- the kit has an amplification reagent, to perform the multiple PCR technique and the positive and negative controls.
- PCR reagents to perform the multiple PCR technique and the positive and negative controls.
- Reaction buffer which is Tris-HCl, pH range between 8.5 and 9.5, KCl in a concentration range between 480 and 560 mM and MgCl 2 in a concentration range between 10 and 20 mM, thermostable enzyme
- Taq polymerase in a range of 400 to 6000U, MgCL 2+ , dNTPs (2'-deoxynucleoside 5 "-triphosohate, containing
- kits can carry quality H 2 O for molecular biology assays.
- the kit also carries positive and negative DNA controls, obtained from pure cultures of strains of H. pylori from the ATCC43504 collection and human genome, respectively. Table No. 2. List of sequences of the primers used for the detection of virulence genes and recognition of Helicobacter pylori.
- Virulence genes cagA Direction 5 'TCA GA AAT TTG GGG 375 bp
- This step includes the realization of a 3% agarose gel, which can optionally be contained in the kit, in addition to the specific molecular weight marker.
- the sample is visualized by means of a reagent that produces differential DNA staining, for example, Ethidium bromide and subsequent exposure to ultraviolet light.
- a reagent that produces differential DNA staining for example, Ethidium bromide and subsequent exposure to ultraviolet light.
- the kit includes and points to the DNA staining method, it can include other DNA staining methods with Ethidium Bromide, or alternatives such as read green, cyber green or the like, since the staining method is not limiting for this invention.
- the kit has a simple user manual.
- the kit is capable of simultaneously detecting at least four genes, one identifying Helicobacter pylori and three virulence vacAml, cagA and duo
- the kit contemplates the association of primers that determine the quality of DNA extraction.
- the kit has the necessary protocols for the correct extraction of DNA from samples and / or pure cultures of H. pylori.
- the kit is provided with the necessary reagents for the realization of multiple PCR, with the use of sterile lyophilized spheres or sterile liquids, in addition to the molecular weight marker and, optionally, it can be included in the agarose kit to perform the gel and developers for visualization of genes, for example, ethidium bromide, syber green.
- Line A is the procedure to be followed when there is a sample that the DNA must be extracted, as an example, BG is Gastric Biopsy, • E: DNA extraction stage, "Line B: is the application of the same procedure to follow when isolating the strain of pure H. pylori,
- DNA is the DNA extracted from samples containing H. pylori
- Multiple PCR consists of the stage in which the samples are subjected to multiple PCR. This stage is common for those samples that have been originated through DNA isolation from gastric biopsy samples, deposition or those samples in which the DNA of the directly isolated bacteria is obtained. This stage aims at the identification and detection of virulence genes of H. pylori, "Visualization: last stage of the process where the results are evidenced by agarose gel electrophoresis, subsequent staining and interpretation of the results.
- Example N ° l Application of the Kit in gastric biopsy samples
- DNA extraction was performed using the reagents detailed below and available in the proposed kit: lysis buffer (1OmM TrisHCl, ImM EDTA, 10% SDS); Proteinase K (20mg / mL); CTAB / NaCl solution; Chloroform: isoamyl alcohol (24: 1); phenol: chloroform: isoamyl alcohol (25: 24: 1); Ethanol and TE buffer. 50 of the analyzed biopsies were tested, other samples were grouped as controls, these were extracted with DNA by the method of Mazurier et al. (1992) from the pure isolates of the culture for H. pylori. As a negative control, human genome DNA was used. 2. -Second stage of amplification of H. pylori by Multiple PCR:
- the amplification of the DNA of H. pylori strains was performed by multiple PCR, lyophilized PCR spheres (Lyophilised Puree Taq ready-to-go PCR Beads, Amersham, Pharmacia Biotech were used ), containing 10X PCR buffer (100 mM Tris-HCl, pH 8.3, 500 mM KCl and 15 mM MgCl 2 ), Taq polymerase at a concentration of 2.5U / ⁇ L, dNTPS (2'-deoxynucleoside 5 "- triphosohate, containing 4 dATP, dCTP, dGTP, dTTP, 1OmM dinucleotides), MgCl 2 (100 mM) and specific primers (lOpmol / L), to amplify the 16S DNAr H.
- 10X PCR buffer 100 mM Tris-HCl, pH 8.3, 500 mM KCl and 15 mM MgCl 2
- pylori identification genes of quality of rDB EUB DNA and of vacAml, dupA and cagA virulence genes All these reagents were reconstituted with nuclease-free water in a final volume of 15 ⁇ L, 5 ⁇ L of previously extracted DNA was added to the mixture.
- the hybridization temperatures ranged from 50 to 74 ° C and 39 cycles of amplification were used.
- Example No. 2 Comparison of the invention with a commercial kit
- the reagents are in liquid and includes sterile sensitive to loss of activity by changes in temperature format ( to be stored and transported at -20 0 C).
- Our invention includes two types of format of choice, lyophilized sterile spheres (completely stable, maintenance and transfer at room temperature) or sterile liquid.
- the MPCR Kit H. pylori kit; Cat No. MP-700081 detects the ureA gene, which as reported in the international literature is not exclusive to H. pylori, so it only detects a virulence gene (cagA), while the invention proposed by us includes at least three genes of virulence.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801275738A CN102099486A (zh) | 2008-05-26 | 2009-05-22 | 用于检测幽门螺旋杆菌的强毒株的分子诊断试剂盒 |
BRPI0913205A BRPI0913205A2 (pt) | 2008-05-26 | 2009-05-22 | kit molecular para diagnóstico de cepas virulentas de helicobacter pylori |
US12/994,783 US20110165576A1 (en) | 2008-05-26 | 2009-05-22 | molecular diagnostic kit for the detection of virulent strains of helicobacter pylori |
EP09755067A EP2333111A4 (en) | 2008-05-26 | 2009-05-22 | MOLECULAR DIAGNOSTIC NEED FOR VIRULENT HELICOBACTER PYLORI STRAINS |
JP2011511528A JP2011522533A (ja) | 2008-05-26 | 2009-05-22 | ヘリコバクター・ピロリのビルレント菌株の検出のための分子診断キット |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CL2008001520A CL2008001520A1 (es) | 2008-05-26 | 2008-05-26 | Procedimiento para detectar la virulencia de una cepa de helicobacter pylori; y kit de deteccion de dichas cepas |
CL1520-2008 | 2008-05-26 |
Publications (1)
Publication Number | Publication Date |
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WO2009145603A1 true WO2009145603A1 (es) | 2009-12-03 |
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ID=41377290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/MX2009/000047 WO2009145603A1 (es) | 2008-05-26 | 2009-05-22 | Kit molecular de diagnostico de cepas virulentas de helicobacter pylori |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110165576A1 (es) |
EP (1) | EP2333111A4 (es) |
JP (1) | JP2011522533A (es) |
CN (1) | CN102099486A (es) |
BR (1) | BRPI0913205A2 (es) |
CL (1) | CL2008001520A1 (es) |
WO (1) | WO2009145603A1 (es) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104846097A (zh) * | 2015-05-21 | 2015-08-19 | 杭州千基生物科技有限公司 | 幽门螺旋杆菌分型与耐药突变基因检测试剂盒 |
CN113024667A (zh) * | 2021-05-27 | 2021-06-25 | 北京保图生物技术有限公司 | 核酸抗体联合检测致病菌的试剂盒 |
CN116693681A (zh) * | 2023-07-18 | 2023-09-05 | 北京新兴四寰生物技术有限公司 | 抗幽门螺杆菌细胞毒素相关蛋白a的单克隆抗体及其应用 |
Families Citing this family (5)
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KR102637908B1 (ko) * | 2018-12-28 | 2024-02-20 | 씨제이제일제당 (주) | 헬리코박터 파일로리 연관 질환에 대한 유전자 마커 |
CN109504790A (zh) * | 2019-01-15 | 2019-03-22 | 上海交通大学医学院附属上海儿童医学中心 | 评价母乳性黄疸的生物标志物、试剂盒以及方法 |
CN112877271B (zh) * | 2021-02-05 | 2023-03-14 | 江西师范大学 | 一种提高钝齿棒杆菌厌氧发酵产l-精氨酸的方法 |
CN117187420B (zh) * | 2023-09-12 | 2024-09-03 | 华东医院 | 一种用于口腔样本幽门螺杆菌定量和毒力多重基因检测的体系及产品 |
CN117737271A (zh) * | 2023-11-29 | 2024-03-22 | 南京市第一医院 | 一种用于幽门螺杆菌鉴定基因和毒力基因即时检测的lamp检测用引物组及其应用 |
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WO1998053082A1 (en) | 1997-05-21 | 1998-11-26 | Daewoong Pharmaceutical Co., Ltd. | A recombinant microorganism expressing an antigenic protein, adhesin |
WO1999049890A1 (en) | 1998-03-31 | 1999-10-07 | Daewoong Pharmaceutical Co., Ltd. | A preventive and therapeutic vaccine for helicobacter pylori-associated diseases |
WO2000029618A1 (en) | 1998-11-12 | 2000-05-25 | University Of Virginia Patent Foundation | Non-invasive detection of helicobacter pylori infection |
KR20030031243A (ko) | 2001-10-12 | 2003-04-21 | 주식회사 서린바이오사이언스 | 위암 및 간암을 포함한 각종 암, 위염, 간경변 및 간염을동시에 진단하기 위한 네스티드 rt-pcr용 프라이머 |
WO2004111265A1 (en) | 2003-06-17 | 2004-12-23 | Tri-Med International Pty Ltd | A kit for the detection of urease |
WO2005108995A2 (en) | 2004-05-05 | 2005-11-17 | Winston Pharmaceuticals, Llc. | Compositions, test kits and methods for detecting helicobacter pylori |
US20060003350A1 (en) * | 2004-04-28 | 2006-01-05 | Tat-Kin Tsang | Methods and compositions to detect bacteria using multiplex PCR |
JP2006284567A (ja) | 2005-03-08 | 2006-10-19 | Pharma Foods International Co Ltd | ヘリコバクター・ピロリ感染の診断方法及び診断キット |
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WO2004084705A2 (en) * | 2003-03-19 | 2004-10-07 | Uniformed Services University Of The Health Sciences | Quantitative detection of h. pylori in biological samples |
-
2008
- 2008-05-26 CL CL2008001520A patent/CL2008001520A1/es unknown
-
2009
- 2009-05-22 CN CN2009801275738A patent/CN102099486A/zh active Pending
- 2009-05-22 JP JP2011511528A patent/JP2011522533A/ja active Pending
- 2009-05-22 WO PCT/MX2009/000047 patent/WO2009145603A1/es active Application Filing
- 2009-05-22 US US12/994,783 patent/US20110165576A1/en not_active Abandoned
- 2009-05-22 EP EP09755067A patent/EP2333111A4/en not_active Withdrawn
- 2009-05-22 BR BRPI0913205A patent/BRPI0913205A2/pt not_active IP Right Cessation
Patent Citations (8)
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WO1998053082A1 (en) | 1997-05-21 | 1998-11-26 | Daewoong Pharmaceutical Co., Ltd. | A recombinant microorganism expressing an antigenic protein, adhesin |
WO1999049890A1 (en) | 1998-03-31 | 1999-10-07 | Daewoong Pharmaceutical Co., Ltd. | A preventive and therapeutic vaccine for helicobacter pylori-associated diseases |
WO2000029618A1 (en) | 1998-11-12 | 2000-05-25 | University Of Virginia Patent Foundation | Non-invasive detection of helicobacter pylori infection |
KR20030031243A (ko) | 2001-10-12 | 2003-04-21 | 주식회사 서린바이오사이언스 | 위암 및 간암을 포함한 각종 암, 위염, 간경변 및 간염을동시에 진단하기 위한 네스티드 rt-pcr용 프라이머 |
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CN104846097A (zh) * | 2015-05-21 | 2015-08-19 | 杭州千基生物科技有限公司 | 幽门螺旋杆菌分型与耐药突变基因检测试剂盒 |
CN113024667A (zh) * | 2021-05-27 | 2021-06-25 | 北京保图生物技术有限公司 | 核酸抗体联合检测致病菌的试剂盒 |
CN113024667B (zh) * | 2021-05-27 | 2021-11-30 | 湖南艾科瑞生物工程有限公司 | 核酸抗体联合检测致病菌的试剂盒 |
CN116693681A (zh) * | 2023-07-18 | 2023-09-05 | 北京新兴四寰生物技术有限公司 | 抗幽门螺杆菌细胞毒素相关蛋白a的单克隆抗体及其应用 |
CN116693681B (zh) * | 2023-07-18 | 2023-12-01 | 北京新兴四寰生物技术有限公司 | 抗幽门螺杆菌细胞毒素相关蛋白a的单克隆抗体及其应用 |
Also Published As
Publication number | Publication date |
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CN102099486A (zh) | 2011-06-15 |
EP2333111A4 (en) | 2011-12-21 |
EP2333111A1 (en) | 2011-06-15 |
CL2008001520A1 (es) | 2009-06-05 |
BRPI0913205A2 (pt) | 2016-01-12 |
JP2011522533A (ja) | 2011-08-04 |
US20110165576A1 (en) | 2011-07-07 |
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