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#27716047   2016/10/07 Save this To Up

Intranasal immunization with recombinant Toxoplasma gondii actin depolymerizing factor confers protective efficacy against toxoplasmosis in mice.

Toxoplasma gondii is an opportunistic protozoan closely associated with AIDS and vertical transmission. T. gondii actin depolymerizing factor (TgADF) plays an important role in actin cytoskeleton remodeling, and it is required to invade host cells. TgADF was a promising vaccine candidate. To observe the immunological changes and protective efficacy of recombinant TgADF protein (rTgADF) against T. gondii infection, we optimized the intranasal immunization dose of rTgADF and analyzed the survival rate and tachyzoite loads in mouse tissues after oral challenge with T. gondii tachyzoites.

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Toxoplasma gondii GRA8, r Toxoplasma gondii MIC 3 r Toxoplasma gondii P24 (GR Toxoplasma gondii P29 (GR Toxoplasma gondii P30 (SA Macrophage Colony Stimula Macrophage Colony Stimula Recombinant Human Intrins Recombinant Human Intrins Recombinant Human Intrins Recombinant Toxoplasma go Recombinant Toxoplasma go

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#26939445   2016/03/04 Save this To Up

[Prokaryotic expression of Staphylococcus aureus Clumping factor B and evaluation of the antiserum-mediated opsonic activity].

Staphylococcus aureus is a major cause of hospital-acquired infection. Because the bacteria are very easy to become resistant to antibiotics, vaccination is a main method against S. aureus infection. Clumping factor B (ClfB) is an adhesion molecule essential for S. aureus to colonize in the host mucosa and is regarded as an important target antigen. In this study, we successfully used Escherichia coli to express a segment encoding the N1-N3 regions of ClfB protein (Truncated-ClfB) cloned from S. aureus. The protein was purified by affinity and ion exchange chromatographies and gel filtration. Rabbits were immunized three times with purified Truncated-ClfB. After that, blood was collected to prepare serum which were then used for measurement of antibody level. Phagocytosis of S. aureus opsonized by the serum was determined by a flow cytometry. Results show that the serum IgG titer reached 1:640 000. Phagocytosed S. aureus by polymorphonuclear leukocytes were significantly more when the bacteria were opsonized by the serum from Truncated-ClfB immunized rabbits than those from no immunized group (P < 0.01). Therefore, the results indicated that Truncated-ClfB could be a promising vaccine candidate against S. aureus infection.

2712 related Products with: [Prokaryotic expression of Staphylococcus aureus Clumping factor B and evaluation of the antiserum-mediated opsonic activity].

Growth Differentiation Fa Growth Differentiation Fa BACTERIOLOGY BACTEROIDES Bacillus anthracis (Anthr Bacillus anthracis (Anthr Human Brain Derived Neuro Human Transforming Growth Human Fibroblast Growth F Human Stromal Cell-Derive Human Platelet Derived Gr Human Fibroblast Growth F Human Nerve Growth Factor

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#25706299   2015/02/24 Save this To Up

Screening diagnostic candidates for schistosomiasis from tegument proteins of adult Schistosoma japonicum using an immunoproteomic approach.

Schistosomiasis is one of the world's most prevalent zoonotic diseases and a serious worldwide public health problem. Since the tegument (TG) of Schistosoma japonicum is in direct contact with the host and induces a host immune response against infection, the identification of immune response target molecules in the schistosome TG is crucial for screening diagnostic antigens for this disease.

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MOUSE ANTI BOVINE ROTAVIR Mouse Anti-RSV 33kDa & 19 MOUSE ANTI BORRELIA BURGD succinate-CoA ligase, GDP formin-like 1 antibody So Recombinant Human Angiost Recombinant Human Angiost Native Human Angiostatin Native Human Angiostatin Recombinant Human ANGPTL3 Recombinant Human ANGPTL3 Recombinant Human ANGPTL3

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#25300760   2015/01/16 Save this To Up

Cloning, expression and characterization of protein disulfide isomerase of Schistosoma japonicum.

The excretory/secretory (ES) proteins of schistosomes play important roles in modulating host immune systems and are regarded as potential vaccine candidates and drug targets. Protein disulfide isomerase (PDI) is an essential enzyme that is involved in disulfide bond formation and rearrangement. In the present study, SjPDI, a 52.8 kDa protein previously identified in a proteomics analysis as one of the ES proteins of Schistosoma japonicum, was cloned and characterized. Western blot analysis showed that recombinant SjPDI (rSjPDI) was recognized by serum from rabbits vaccinated with schistosome worm antigen. Worm protein extracts and ES protein extracts from S. japonicum could react with anti-rSjPDI mouse serum. Real-time PCR analysis indicated that SjPDI was expressed at all developmental stages tested, and a high expression level was detected in 42-day-old male worms. Immunofluorescence analysis revealed that SjPDI was mainly distributed on the tegument and parenchyma of S. japonicum worms. An enzyme-linked immunosorbent assay (ELISA) demonstrated that rSjPDI could induce a high level of rSjPDI-specific IgG antibodies. The biological activity of purified rSjPDI was confirmed by isomerization and antioxidative activity assays. The 35.32%, 26.19% reduction in the worm burden and 33.17%, 31.7% lower liver egg count were obtained in mice vaccinated with rSjPDI compared with the blank control group in two independent trials. Our preliminary results suggest that rSjPDI plays an important role in the development of the schistosome and is a potential vaccine candidate for schistosomiasis.

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PDI (Protein Disulfide Is Protein Disulfide Isomera Protein Disulfide Isomera Protein Disulfide Isomera baculoCOMPLETE protein ex Lentiviral Technology pCD Human dopachrome tautomer Rabbit Anti-Rat Androgen pYLEX1 - Expression Vect AccuRapid™ Cell Free Pr Ofloxacin CAS Number [824 Recombinant Human Androge

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#25253346   2014/11/22 Save this To Up

Hyperglycosylated stable core immunogens designed to present the CD4 binding site are preferentially recognized by broadly neutralizing antibodies.

The HIV-1 surface envelope glycoprotein (Env) trimer mediates entry into CD4(+) CCR5(+) host cells. Env possesses conserved antigenic determinants, such as the gp120 primary receptor CD4 binding site (CD4bs), a known neutralization target. Env also contains variable regions and protein surfaces occluded within the trimer that elicit nonneutralizing antibodies. Here we engineered additional N-linked glycans onto a cysteine-stabilized gp120 core (0G) deleted of its major variable regions to preferentially expose the conformationally fixed CD4bs. Three, 6, 7, and 10 new NXT/S glycan (G) motifs were engineered into 0G to encode 3G, 6G, 7G, and 10G cores. Following purification, most glycoproteins, except for 10G, were recognized by broadly neutralizing CD4bs-directed antibodies. Gel and glycan mass spectrometry confirmed that additional N-glycans were posttranslationally added to the redesigned cores. Binding kinetics revealed high-affinity recognition by seven broadly neutralizing CD4bs-directed antibodies and low to no binding by non-broadly neutralizing CD4bs-directed antibodies. Rabbits inoculated with the hyperglycosylated cores elicited IgM and IgG responses to each given protein that were similar in their neutralization characteristics to those elicited by parental 0G. Site-specific glycan masking effects were detected in the elicited sera, and the antisera competed with b12 for CD4bs-directed binding specificity. However, the core-elicited sera showed limited neutralization activity. Trimer priming or boosting of the core immunogens elicited tier 1-level neutralization that mapped to both the CD4bs and V3 and appeared to be trimer dependent. Fine mapping at the CD4bs indicated that conformational stabilization of the cores and addition of N-glycans altered the molecular surface of Env sites of vulnerability to neutralizing antibody, suggesting an explanation for why the elicited neutralization was not improved by this rational design strategy.

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Multiple organ cancer tis Multiple organ tumor tiss Signal Transduction Anti CD4 antibody, Monoclonal CD4 antibody, Monoclonal Shiga Toxin 1 antibody, M Shiga Toxin 2 antibody, M Hepatitis C Virus antibod Cholera toxin antibody, M Clostridium botulinum D T Clostridum difficile toxi Clostridum difficile toxi

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#25199557   2014/11/10 Save this To Up

Comparison of an indirect fluorescent antibody test with Western blot for the detection of serum antibodies against Encephalitozoon cuniculi in cats.

Current clinical research indicates that Encephalitozoon (E.) cuniculi infections in cats may be underdiagnosed, especially in animals with typical ocular signs (cataract/anterior uveitis). Although molecular detection of the pathogen in tissue appears promising, serology remains the major diagnostic tool in the living animal. While serological tests are established for the main host of E. cuniculi, the rabbit, the routine serological diagnosis for cats still needs validation. The aim of the study was to evaluate the consistency of indirect fluorescence antibody test (IFAT) and Western blot (WB) for the detection of IgG antibodies against E. cuniculi in the serum of 84 cats. In addition, PCR of liquefied lens material or intraocular fluid was performed in those of the cats with a suspected ocular E. cuniculi infection. Twenty-one cats with positive PCR results were considered as a positive reference group. Results obtained by IFAT and WB corresponded in 83/84 serum samples, indicating a very good correlation between both serological methods. Using WB as the standard reference, sensitivity and specificity for the detection of antibodies against E. cuniculi by the IFAT were 97.6 and 100%, respectively. The positive and negative predictive values for the IFAT were 100 and 97.7%, respectively. The accuracy (correct classified proportion) for the detection of IgG antibodies against E. cuniculi in cats was 98.8%. The comparison of both serological methods with the PCR results also revealed a good agreement as 20 out of 21 PCR-positive samples were seropositive both in IFAT and WB. Both tests can be considered as equally reliable assays to detect IgG antibodies against E. cuniculi in cats. As the IFAT is quicker and easier to perform, it is recommended for routine use in the diagnosis of feline encephalitozoonosis.

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Multiple organ tumor tiss HIV1 integrase antibody, Human Serum Albumin antib Human Serum Albumin antib HCV antibody test strip, H. Pylori antibody test s Beta Amyloid (40) ELISA K Beta Amyloid (1 42) ELISA anti-GFP antibody, rabbit Apoptosis antibody array Cell cycle antibody array Cytokine antibody array i

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#25131777   2014/10/03 Save this To Up

One minute ultraviolet exposure inhibits Toxoplasma gondii tachyzoite replication and cyst conversion without diminishing host humoral-mediated immune response.

We developed a protocol to inactivate Toxoplasma gondii (T. gondii) tachyzoites employing 1 min of ultraviolet (UV) exposure. We show that this treatment completely inhibited parasite replication and cyst formation in vitro and in vivo but did not affect the induction of a robust IgG response in mice. We propose that our protocol can be used to study the contribution of the humoral immune response to rodent behavioral alterations following T. gondii infection.

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Toxoplasma gondii MIC 3 r Toxoplasma gondii P24 (GR Toxoplasma gondii P29 (GR Toxoplasma gondii P30 (SA TOXOPLASMA GONDII Culture Androgen Receptor (Phosph Androgen Receptor (Phosph Androgen Receptor (Ab 650 Recombinant Toxoplasma go Recombinant Toxoplasma go Recombinant Toxoplasma go Recombinant Toxoplasma go

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#24903329   2014/08/19 Save this To Up

Antibody detection in tear samples as a surrogate to monitor host immunity against papillomavirus infections in vaccinated and naturally infected hosts.

Monitoring serum antibodies against natural infections or after immunizations has been a standard clinical diagnostic procedure. However, collecting blood samples requires trained personnel, and may cause discomfort and increase the risk of complications. In this study, we investigated whether tear samples could serve as a surrogate for serum samples to measure specific antibodies. A widely used preclinical cottontail rabbit papillomavirus (CRPV)/rabbit model has been a surrogate model for high-risk human papillomavirus (HPV) infections. New Zealand white rabbits, either naturally infected with CRPV or immunized with two clinically available HPV vaccines (Gardasil and Cervarix), were examined for antibody generation in both tear and serum samples. We demonstrated that antibodies were detectable in tears from both naturally infected as well as vaccinated animals. Overall, the antibody levels in tears were ~10-fold lower than those from the corresponding serum samples, but background noise was lower in tear samples. The isotypes of antibodies in tears were predominantly IgA and IgG. These findings showed clearly that tears could be a surrogate for serum samples for monitoring antibody responses. As collecting tears causes no discomfort and poses no risk to patients, it represents a novel and promising method for monitoring future HPV epidemiological studies as well as for use in clinical practice.

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Interleukin-34 IL34 (N-t Interleukin-34 IL34 anti HIV1 integrase antibody, Integrin â3 (Phospho Tyr Integrin â3 (Phospho Tyr Integrin â3 (Ab 773) Ant Integrin â3 (Ab 785) Ant Cell Meter™ Fluorimetri Cell Meter™ Fluorimetri Directed In Vivo Angiogen Cultrex 96 Well Laminin I Cultrex 96 Well Collagen

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#24690250   2014/05/12 Save this To Up

Primary and secondary experimental infestation of rabbits (Oryctolagus cuniculus) with Sarcoptes scabiei from a wild rabbit: factors determining resistance to reinfestation.

Studies of sarcoptic mange and immunity are hampered by lack of mite sources and natural infestation models. We have investigated the clinical and pathological signs, specific IgG response and acquired immunity in naïve New Zealand White rabbits (Oryctolagus cuniculus) experimentally infested with Sarcoptes scabiei originally isolated from a clinically affected free-living European wild rabbit. Twenty rabbits were infested using two methods, direct contact for a 24 h period with a seeder rabbit simulating the natural process of infestation and application of a dressing holding approximately 1800 live mites on each hind limb (foot area) for a 24h period. Eight weeks post infestation, rabbits were treated with ivermectin and infestation cleared. Eight weeks later seventeen previously infested and four uninfested naïve controls were then re-exposed to the same S. scabiei variety using the same methods and followed for another 8 weeks. The progress of the disease was markedly more virulent in the animals infested by contact, indicating that the effective dose of mites managing to thrive and infest each rabbit by this method was higher. Nevertheless, infestation by contact resulted in partial protection to reexposure, rabbits developed high non-protective antibody titres upon reinfestation and presented severe clinical signs. However, rabbits reinfested by dressing developed lower IgG titres, and presented high levels of resistance to reinfestation, which might be due to induction of a strong local cellular response in the inoculation point that killed the mites and resulted in a lower mite effective dose, with subsequent reduced lesion development. Statistical analysis showed that sex, method of infestation and previous exposure are key factors determining the ability of rabbits to develop immunity to this disease. The rabbit-mange model developed will allow the further study of immunity and resistance to this neglected pathogen using a natural host system.

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ELISA kit 4-nitrophenol 2 Androgen Receptor (Phosph Androgen Receptor (Phosph Primary antibody BRCA1 ( Primary antibody eIF2β Primary antibody Histone Rabbit Anti-alpha-Tocophe Rabbit Anti-Human Androge Rabbit Anti-Human Androge Rabbit anti Chicken IgY a Androgen Receptor (Ab 650 Primary antibody NMDANR2

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#24638881   2014/07/21 Save this To Up

Structure and specificity of an antibody targeting a proteolytically cleaved IgG hinge.

The functional role of human antihinge (HAH) autoantibodies in normal health and disease remains elusive, but recent evidence supports their role in the host response to IgG cleavage by proteases that are prevalent in certain disorders. Characterization and potential exploitation of these HAH antibodies has been hindered by the absence of monoclonal reagents. 2095-2 is a rabbit monoclonal antibody targeting the IdeS-cleaved hinge of human IgG1. We have determined the crystal structure of the Fab of 2095-2 and its complex with a hinge analog peptide. The antibody is selective for the C-terminally cleaved hinge ending in G236 and this interaction involves an uncommon disulfide in VL CDR3. We probed the importance of the disulfide in VL CDR3 through engineering variants. We identified one variant, QAA, which does not require the disulfide for biological activity or peptide binding. The structure of this variant offers a starting point for further engineering of 2095-2 with the same specificity, but lacking the potential manufacturing liability of an additional disulfide. Proteins 2014; 82:1656-1667. © 2014 Wiley Periodicals, Inc.

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MOUSE ANTI BOVINE ROTAVIR RABBIT ANTI GSK3 BETA (pS MOUSE ANTI CANINE DISTEMP MOUSE ANTI HUMAN CD19 RPE MOUSE ANTI APAAP COMPLEX, B-Phycoerythrin antibody 2-Amino Benzimidazole Su 2-Amino Benzimidazole Su Interleukin-34 IL34 (N-t Interleukin-34 IL34 anti CRC3 CD3 (bispecific) Cl 2,3 dinor 6 keto Prostag

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