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Antibodies Research

03:52 EDT 23rd October 2017 | BioPortfolio

Clinical Potential of Prefusion RSV F-specific Antibodies.

Human respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract infections in the very young. The RSV fusion protein (F) is essential for virus entry because it mediates viral and host membrane fusion. During this fusion process F is converted from a metastable prefusion conformation into an energetically favored postfusion state. Antibodies that target F can prevent viral ...

Interlaced Size Exclusion Chromatography for faster Protein Analysis.

In this research note, interlaced Size Exclusion Chromatography (SEC) is used to shorten the duration of protein analysis. The applied method has a threefold higher sample throughput than comparable ones using conventional SEC. Further important advantages are the identical area's precision and the preservation of protein stability. Two different applications are presented where a short time inter...

Blood Transfusion Management and Transfusion-Related Outcomes in Daratumumab-Treated Patients With Relapsed or Refractory Multiple Myeloma.

Daratumumab, a human CD38 monoclonal antibody approved for multiple myeloma (MM) treatment, binds red blood cells (RBCs), resulting in panagglutination in compatibility tests. Published mitigation methods avoid additional testing, ensuring timely release of blood products. Blood transfusion management and transfusion-related outcomes of daratumumab-treated patients in the SIRIUS study are reported...

Semaphorin 4D from CD15(+) Granulocytes via ADAM10-induced Cleavage Contributes to Antibody Production in Bullous Pemphigoid.

Autoreactive B cells activation and antibody production are critical events for the development of bullous pemphigoid (BP). However, the mechanism that is involved in the modulation of B cell activation and autoantibody generation has not been fully understood. Semaphorin 4D (Sema4D/CD100) plays important roles in immune regulation related to B cell, but its implication in BP remains obscure. The ...

Evaluation of immune responses in dogs to oral rabies vaccine under field conditions.

During the 20th century parenteral vaccination of dogs at central-point locations was the foundation of successful canine rabies elimination programs in numerous countries. However, countries that remain enzootic for canine rabies have lower infrastructural development compared to countries that have achieved elimination, which may make traditional vaccination methods less successful. Alternative ...

A novel multi-variant epitope ensemble vaccine against avian leukosis virus subgroup J.

The hypervariable antigenicity and immunosuppressive features of avian leukosis virus subgroup J (ALV-J) has led to great challenges to develop effective vaccines. Epitope vaccine will be a perspective trend. Previously, we identified a variant antigenic neutralizing epitope in hypervariable region 1 (hr1) of ALV-J, N-LRDFIA/E/TKWKS/GDDL/HLIRPYVNQS-C. BLAST analysis showed that the mutation of A, ...

Phase 1 study of enavatuzumab, a first-in-class humanized monoclonal antibody targeting the TWEAK receptor, in patients with advanced solid tumors.

This phase I study evaluates the safety, maximum tolerated dose (MTD), pharmacokinetics (PK), pharmacodynamics, and preliminary anticancer activity of enavatuzumab, a humanized IgG1 antibody to the TWEAK receptor, in patients with advanced solid malignancies. Patients received escalating doses of enavatuzumab given intravenously over 60 minutes every 2 weeks. Blood was obtained for PK and biomarke...

Small molecule inhibition of PD-1 transcription is an effective alternative to antibody blockade in cancer therapy.

The impact of PD-1 immune checkpoint therapy prompts exploration of other strategies to downregulate PD-1 for cancer therapy. We previously showed that the serine/threonine kinase, glycogen synthase kinase GSK-3α/β, is a central regulator of PD-1 transcription in CD8+ T cells. Here, we show that the use of small molecule inhibitors of GSK-3α/β (GSK-3i) to reduce pcdc1 (PD-1) transcription and ...

Anti-glypican-1 antibody-drug conjugate exhibits potent preclinical antitumor activity against glypican-1 positive uterine cervical cancer.

Glypican-1 (GPC1) is highly expressed in solid tumors, especially squamous cell carcinomas (SCCs), and is thought to be associated with disease progression. We explored the use of a GPC1-targeted antibody-drug conjugate (ADC) as a novel treatment for uterine cervical cancer. On immunohistochemical staining, high expression levels of GPC1 were detected in about 50% of uterine cervical cancer tissue...

Prevalence of myeloma precursor state monoclonal gammopathy of undetermined significance in 12372 individuals 10-49 years old: a population-based study from the National Health and Nutrition Examination Survey.

We studied the prevalence of monoclonal gammopathy of undetermined significance (MGUS) in younger individuals, age 10-49 years, using samples from the National Health and Nutritional Examination Survey (NHANES) III. NHANES prevalence rates were standardized to the 2000 US total population. Among 12 372 individuals (4073 blacks, 4146 Mexican-Americans, 3595 whites, and 558 others), MGUS was ident...

Generation and Characterization of Recombinant Antibody-Like ADP-Ribose Binding Proteins.

ADP-ribosylation is an enzyme-catalyzed post-translational modification of proteins in which the ADP-ribose (ADPR) moiety of NAD+ is transferred to a specific amino acid in a substrate protein. The biological functions of ADP-ribosylation are numerous and diverse, ranging from normal physiology to pathological conditions. Biochemical and cellular studies of the diverse forms and functions of ADPR ...

Anti-hLCN6 Monoclonal Antibody.

Lenalidomide-Associated Thyroid-Related Eyelid Retraction.

Several antineoplastic treatments have been responsible for thyroid dysfunction and thyroid eye disease. Min, Vaidya, and Becker (2011) reported a case of euthyroid Graves orbitopathy after treatment with ipilimumab with the patient displaying proptosis and myositis in the setting of normal thyroid function tests and elevated thyroid antibodies. The authors report a case of a 76-year-old woman who...

Movement disorders with neuronal antibodies: syndromic approach, genetic parallels and pathophysiology.

Movement disorders are a prominent and common feature in many autoantibody-associated neurological diseases, a group of potentially treatable conditions that can mimic infectious, metabolic or neurodegenerative disease. Certain movement disorders are likely to associate with certain autoantibodies; for example, the characteristic dyskinesias, chorea and dystonia associated with NMDAR antibodies, s...

A Case of a Newborn With Blocked RhD Antigen and HDFN.

A group O RhD-negative pregnant patient with anti-D antibody at titer 1:2048 delivered a baby boy by cesarean section at 38 + 6 weeks gestational age. The neonate typed as group O, but D antigen was at first uncertain. DAT and antibody screen of newborn were both positive. Various assays were used for D antigen determination. Ultimately, D antigen blocked by high-titer maternal anti-D antibody was...

A simplified protocol using rituximab and immunoglobulin for ABO-incompatible low-titer living donor liver transplantation.

No consensus has been reached regarding optimal treatment strategies for ABO-incompatible (ABO-I) living donor liver transplantation (LDLT). We introduce a simplified protocol using rituximab and intravenous immunoglobulin (IVIG).

Oxidation of β2-glycoprotein I associates with IgG antibodies to domain I in patients with antiphospholipid syndrome.

Domain I (DI) of beta-2-glycoprotein I (β2GPI) contains the immunodominant epitope for pathogenic antiphospholipid antibodies (aPL). DI is exposed in the linear form of the molecule but not in the circular form that comprises 90% of serum β2GPI. The majority of circulating β2GPI is biochemically reduced with two free thiols in Domain V. However, increased levels of oxidised β2GPI are found in ...

Bivalirudin anticoagulation for left ventricular assist device implantation on an extracorporeal life support system in patients with heparin-induced thrombocytopenia antibodies.

Heparin-induced thrombocytopenia (HIT) requires alternative anticoagulation strategies. We investigated outcomes in patients with HIT antibodies undergoing low-dose bivalirudin anticoagulation during left ventricular assist device implantation on an extracorporeal life support system (ECLS) and compared the results with non-HIT patients treated with heparin and receiving left ventricular assist de...

Less Limb Muscle Involvement in Myositis Patients with Anti-Mitochondrial Antibodies.

Recent studies have revealed the clinical, histological, and pathophysiological characteristics in a group of inflammatory myopathies with selected autoantibodies. We retrospectively compared the clinical manifestations and histological features between 8 anti-mitochondrial (anti-M2) antibody-positive and 33 antibody-negative patients. Patients with anti-M2 antibodies have been previously reported...

Comparison of Safety and Efficacy of Tacrolimus versus Infliximab for Active Ulcerative Colitis.

This narrative review was to determine which medication, tacrolimus (TAC) or infliximab (IFX), is safer and more effective in the management of active UC. Our literature search identified 5 studies directly comparing the outcomes of TAC versus IFX for active UC. A review of the 5 studies was undertaken.

Real-World Results of Intravitreal Ranibizumab, Bevacizumab, or Triamcinolone for Diabetic Macular Edema.

To compare the visual and anatomical outcomes of intravitreal ranibizumab (group 1), bevacizumab (group 2), and triamcinolone (group 3) for center-involving diabetic macular edema.

Association of Natural Killer Cell Ligand Polymorphism HLA-C Asn80Lys With the Development of Anti-SSA/Ro-Associated Congenital Heart Block.

Fetal exposure to maternal anti-SSA/Ro antibodies is necessary but not sufficient for the development of autoimmune congenital heart block (CHB), suggesting that other factors, such as fetal genetic predisposition, are important. Given the previously described association between major histocompatibility complex alleles and CHB risk, we undertook the present study to test the hypothesis that a var...

Outside-in HLA class I signaling regulates ICAM-1 clustering and endothelial-monocyte interactions via mTOR in transplant antibody-mediated rejection.

Antibody-mediated rejection (AMR) resulting in transplant allograft vasculopathy (TAV) is the major obstacle for long-term survival of solid organ transplants. AMR is caused by donor-specific antibodies to HLA which contribute to TAV by initiating outside-in signaling transduction pathways that elicit monocyte recruitment to activated endothelium. Mechanistic target of rapamycin (mTOR) inhibitors ...

Subjective Complaints as Main Reason for Biosimilar Discontinuation after Open Label Transitioning from Originator to Biosimilar Infliximab.

To evaluate drug survival, effectiveness, pharmacokinetics, immunogenicity and safety after transitioning treatment from originator infliximab (Remicade(®) , REM) to biosimilar infliximab (CT-P13) in patients with rheumatoid arthritis, psoriatic arthritis or ankylosing spondylitis in daily practice.

RAPID EVOLUTION OF THYROID DYSFUNCTION IN PATIENTS TREATED WITH NIVOLUMAB.

To describe the evolution of thyroid dysfunction in a series of patients with cancer treated with the immune checkpoint inhibitor anti-programmed cell death protein-1 (PD-1) monoclonal antibody, nivolumab.

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