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82 real negative results, null findings, and replication failures in Immunology and Microbiology · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessImmunology and Microbiology

Effect of Targeted Polymyxin B Hemoperfusion on 28-Day Mortality in Patients With Septic Shock and Elevated Endotoxin Level

R. Phillip Dellinger, Sean M. Bagshaw, Massimo Antonelli et al. · 2018 · JAMA

Importance: Polymyxin B hemoperfusion reduces blood endotoxin levels in sepsis. Endotoxin activity can be measured in blood with a rapid assay. Treating patients with septic shock and elevated endotoxin activity using polymyxin B…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Damaged Intestinal Epithelial Integrity Linked to Microbial Translocation in Pathogenic Simian Immunodeficiency Virus Infections

Jacob D. Estes, Levelle D. Harris, Nichole R. Klatt et al. · 2010 · PLoS Pathogens

The chronic phase of HIV infection is marked by pathological activation of the immune system, the extent of which better predicts disease progression than either plasma viral load or CD4(+) T cell count. Recently, translocation of microbial products from the gastrointestinal tract has been proposed as an underlying cause of this immune activation, based on indirect evidence including the detection of microbial products and specific immune responses in the plasma of chronically HIV-infected humans or SIV-infected Asian macaques. We analyzed tissues from SIV-infected rhesus macaques (RMs) to pro

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Effects of Bacillus subtilis on the growth performance, digestive enzymes, immune gene expression and disease resistance of white shrimp, Litopenaeus vannamei

Hadi Zokaeifar, José Luís Balcázar, Che Roos Saad et al. · 2012 · Fish & Shellfish Immunology

We studied the effect of two probiotic Bacillus subtilis strains on the growth performance, digestive enzyme activity, immune gene expression and disease resistance of juvenile white shrimp (Litopenaeus vannamei). A mixture of two…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

BCG vaccine protection from severe coronavirus disease 2019 (COVID-19)

Luis E. Escobar, Alvaro Molina-Cruz, Carolina Barillas‐Mury · 2020 · Proceedings of the National Academy of Sciences

Significance The COVID-19 pandemic is one of the most devastating in recent history. The bacillus Calmette−Guérin (BCG) vaccine against tuberculosis also confers broad protection against other infectious diseases, and it has been proposed that it could reduce the severity of COVID-19. This epidemiological study assessed the global linkage between BCG vaccination and COVID-19 mortality. Signals of BCG vaccination effect on COVID-19 mortality are influenced by social, economic, and demographic differences between countries. After mitigating multiple confounding factors, several significant assoc

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Fucosyltransferase 2 (FUT2) non-secretor status is associated with Crohn's disease

Dermot McGovern, Michelle R. Jones, Kent D. Taylor et al. · 2010 · Human Molecular Genetics

Genetic variation in both innate and adaptive immune systems is associated with Crohn's disease (CD) susceptibility, but much of the heritability to CD remains unknown. We performed a genome-wide association study (GWAS) in 896 CD cases…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Global Population Structure and Evolution of Bordetella pertussis and Their Relationship with Vaccination

Marieke J Bart, Simon R. Harris, Abdolreza Advani et al. · 2014 · mBio

Bordetella pertussis causes pertussis, a respiratory disease that is most severe for infants. Vaccination was introduced in the 1950s, and in recent years, a resurgence of disease was observed worldwide, with significant mortality in infants. Possible causes for this include the switch from whole-cell vaccines (WCVs) to less effective acellular vaccines (ACVs), waning immunity, and pathogen adaptation. Pathogen adaptation is suggested by antigenic divergence between vaccine strains and circulating strains and by the emergence of strains with increased pertussis toxin production. We applied com

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Negative / Null Result ReportOpen accessImmunology and Microbiology

COX-2 inhibition improves immunotherapy and is associated with decreased numbers of myeloid-derived suppressor cells in mesothelioma. Celecoxib influences MDSC function

Joris D. Veltman, Margaretha Lambers, Menno van Nimwegen et al. · 2010 · BMC Cancer

BACKGROUND: Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of immature cells that accumulates in tumour-bearing hosts. These cells are induced by tumour-derived factors (e.g. prostaglandins) and have a critical role in immune suppression. MDSC suppress T and NK cell function via increased expression of arginase I and production of reactive oxygen species (ROS) and nitric oxide (NO). Immune suppression by MDSC was found to be one of the main factors for immunotherapy insufficiency. Here we investigate if the in vivo immunoregulatory function of MDSC can be reversed by in

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Non-specific effects of standard measles vaccine at 4.5 and 9 months of age on childhood mortality: randomised controlled trial

Peter Aaby, Cesário Martins, M.‐L. Garly et al. · 2010 · BMJ

OBJECTIVE: To examine in a randomised trial whether a 25% difference in mortality exists between 4.5 months and 3 years of age for children given two standard doses of Edmonston-Zagreb measles vaccines at 4.5 and 9 months of age compared…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Incidence, prevalence and mortality of patients with psoriasis: a U.K. population-based cohort study

David A. Springate, Rosa Parisi, Evangelos Kontopantelis et al. · 2016 · British Journal of Dermatology

BACKGROUND: The burden of psoriasis across many world regions is high and there is a recognized need to better understand the epidemiology of this common skin disorder. OBJECTIVES: To examine changes in the prevalence and incidence of psoriasis, and mortality rates over a 15-year period. METHODS: Cohort study involving analysis of longitudinal electronic health records between 1999 and 2013 using the U.K. Clinical Practice Research Datalink (CPRD). RESULTS: The prevalence of psoriasis increased steadily from 2·3% (2297 cases per 100 000) in 1999 to 2·8% (2815 per 100 000) in 2013, which does n

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Negative / Null Result ReportImmunology and Microbiology

Nonmedical Vaccine Exemptions and Pertussis in California, 2010

Jessica E. Atwell, Josh Van Otterloo, Jennifer Zipprich et al. · 2013 · PEDIATRICS

BACKGROUND: In 2010, 9120 cases of pertussis were reported in California, more than any year since 1947. Although this resurgence has been widely attributed to waning immunity of the acellular vaccine, the role of vaccine refusal has not…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Susceptibility of Pseudomonas aeruginosa Biofilm to Alpha-Helical Peptides: D-enantiomer of LL-37

Scott N. Dean, Barney Bishop, Monique L. van Hoek · 2011 · Frontiers in Microbiology

Pseudomonas aeruginosa is a highly versatile opportunistic pathogen and its ability to produce biofilms is a direct impediment to the healing of wounds and recovery from infection. Interest in anti-microbial peptides (AMPs) has grown due to their potential therapeutic applications and their possible use against antibiotic resistant bacteria. LL-37 is the only cathelicidin expressed by humans. In this study, we tested LL-37 and the effect of a protease-resistant LL-37 peptide mimetic, the peptide enantiomer D-LL-37, for anti-microbial and anti-biofilm activity against P. aeruginosa. Both forms

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Agonistic CD40 therapy induces tertiary lymphoid structures but impairs responses to checkpoint blockade in glioma

Luuk van Hooren, Alessandra Vaccaro, Mohanraj Ramachandran et al. · 2021 · Nature Communications

Abstract Gliomas are brain tumors characterized by an immunosuppressive microenvironment. Immunostimulatory agonistic CD40 antibodies (αCD40) are in clinical development for solid tumors, but are yet to be evaluated for glioma. Here, we demonstrate that systemic delivery of αCD40 in preclinical glioma models induces the formation of tertiary lymphoid structures (TLS) in proximity of meningeal tissue. In treatment-naïve glioma patients, the presence of TLS correlates with increased T cell infiltration. However, systemic delivery of αCD40 induces hypofunctional T cells and impairs the response t

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Negative / Null Result ReportOpen accessImmunology and Microbiology

The Impact of a School-Based Hygiene, Water Quality and Sanitation Intervention on Soil-Transmitted Helminth Reinfection: A Cluster-Randomized Trial

Matthew C. Freeman, Thomas Clasen, Simon Brooker et al. · 2013 · American Journal of Tropical Medicine and Hygiene

We conducted a cluster-randomized trial to assess the impact of a school-based water treatment, hygiene, and sanitation program on reducing infection with soil-transmitted helminths (STHs) after school-based deworming. We assessed…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Therapeutic Cancer Vaccines in Prostate Cancer: The Paradox of Improved Survival Without Changes in Time to Progression

Ravi A. Madan, James L. Gulley, Tito Fojo et al. · 2010 · The Oncologist

Therapeutic cancer vaccines represent a new class of agents in the treatment of cancer. Sipuleucel-T is an antigen-presenting cell-based vaccine that recently demonstrated a significant 4.8-month improvement in overall survival in advanced…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Re-analysis of health and educational impacts of a school-based deworming programme in western Kenya: a pure replication

Alexander M. Aiken, Calum Davey, James Hargreaves et al. · 2015 · International Journal of Epidemiology

BACKGROUND: Helminth (worm) infections cause morbidity among poor communities worldwide. An influential study conducted in Kenya in 1998-99 reported that a school-based drug-and-educational intervention had benefits regarding worm…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Effect of Adding Motolimod to Standard Combination Chemotherapy and Cetuximab Treatment of Patients With Squamous Cell Carcinoma of the Head and Neck

Robert L. Ferris, Nabil F. Saba, Barbara J. Gitlitz et al. · 2018 · JAMA Oncology

Importance: Immunotherapy for recurrent and/or metastatic (R/M) squamous cell carcinoma of the head and neck (SCCHN) is promising. The toll-like receptor 8 (TLR8) agonist motolimod may stimulate innate and adaptive immunity. Objective: To…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Zoledronic acid impairs myeloid differentiation to tumour-associated macrophages in mesothelioma

Joris D. Veltman, Margaretha Lambers, Menno van Nimwegen et al. · 2010 · British Journal of Cancer

BACKGROUND: Suppressive immune cells present in tumour microenvironments are known to augment tumour growth and hamper efficacy of antitumour therapies. The amino-bisphosphonate Zoledronic acid (ZA) is considered as an antitumour agent, as…

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Negative / Null Result ReportImmunology and Microbiology

Quantification of piscine reovirus (PRV) at different stages of Atlantic salmon Salmo salar production

Marie Løvoll, Marta Alarcón, Britt Bang Jensen et al. · 2012 · Diseases of Aquatic Organisms

The newly described piscine reovirus (PRV) appears to be associated with the development of heart and skeletal muscle inflammation (HSMI) in farmed Atlantic salmon Salmo salar L. PRV seems to be ubiquitous among fish in Norwegian salmon…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Type 2 innate lymphoid cells treat and prevent acute gastrointestinal graft-versus-host disease

Danny Bruce, Heather E. Stefanski, Benjamin G. Vincent et al. · 2017 · Journal of Clinical Investigation

Acute graft-versus-host disease (aGVHD) is the most common complication for patients undergoing allogeneic stem cell transplantation. Despite extremely aggressive therapy targeting donor T cells, patients with grade III or greater aGVHD of…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Activated protein C targets CD8+ dendritic cells to reduce the mortality of endotoxemia in mice

E. J. Kerschen, Irene Hernández, Mark Zogg et al. · 2010 · Journal of Clinical Investigation

Activated protein C (aPC) therapy reduces mortality in adult patients with severe sepsis. In mouse endotoxemia and sepsis models, mortality reduction requires the cell signaling function of aPC, mediated through protease-activated…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Inflammatory Response of Mast Cells during Influenza A Virus Infection Is Mediated by Active Infection and RIG-I Signaling

Amy C. Graham, Kimberly M. Hilmer, Julianne Zickovich et al. · 2013 · The Journal of Immunology

Influenza A virus (IAV) is a major respiratory pathogen of both humans and animals. The lung is protected from pathogens by alveolar epithelial cells, tissue-resident alveolar macrophages, dendritic cells, and mast cells. The role of…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Effect of Dried Blood Spot Quality on Newborn Screening Analyte Concentrations and Recommendations for Minimum Acceptance Criteria for Sample Analysis

Roanna George, Stuart J. Moat · 2015 · Clinical Chemistry

BACKGROUND: The analysis of dried blood spots has been used routinely for newborn screening since the early 1970s, and the number of disorders screened has expanded substantially in recent years. However, there is a lack of evidence…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Current clinical practice and challenges in the management of secondary immunodeficiency in hematological malignancies

Il‐Kang Na, Matthew Buckland, Carlo Agostini et al. · 2019 · European Journal Of Haematology

OBJECTIVE: Despite long-standing safe and effective use of immunoglobulin replacement therapy (IgRT) in primary immunodeficiency, clinical data on IgRT in patients with secondary immunodeficiency (SID) due to B-cell lymphoproliferative…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Neoantigen DNA vaccines are safe, feasible, and induce neoantigen-specific immune responses in triple-negative breast cancer patients

Xiuli Zhang, S. Peter Goedegebuure, Michael Y. Chen et al. · 2024 · Genome Medicine

BACKGROUND: Neoantigen vaccines can induce or enhance highly specific antitumor immune responses with minimal risk of autoimmunity. We have developed a neoantigen DNA vaccine platform capable of efficiently presenting both HLA class I and II epitopes and performed a phase 1 clinical trial in triple-negative breast cancer patients with persistent disease on surgical pathology following neoadjuvant chemotherapy, a patient population at high risk of disease recurrence. METHODS: Expressed somatic mutations were identified by tumor/normal exome sequencing and tumor RNA sequencing. The pVACtools sof

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Negative / Null Result ReportImmunology and Microbiology

After TGN1412: Recent developments in cytokine release assays

Richard Stebbings, David Eastwood, Stephen Poole et al. · 2012 · Journal of Immunotoxicology

The failure of regulatory science to keep pace with and support the development of new biological medicines was very publically highlighted in March 2006 when the first-in-man Phase I clinical trial of the immunomodulatory CD28-specific…

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Small molecule STING inhibition improves myocardial infarction remodeling

Lavinia Rech, Mahmoud Abdellatif, Maria Pöttler et al. · 2021 · Life Sciences

AIMS: Myocardial infarction (MI) is a major global cause of death. Massive cell death leads to inflammation, which is necessary for ensuing wound healing. Extensive inflammation, however, promotes infarct expansion and adverse remodeling. The DNA sensing receptor cyclic GMP-AMP synthase and its downstream signaling effector stimulator of interferon genes (cGAS-STING) is central in innate immune reactions in infections or autoimmunity. Cytosolic double-strand DNA activates the pathway and down-stream inflammatory responses. Recent papers demonstrated that this pathway is also active following M

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Clinical activity of a htert (vx-001) cancer vaccine as post-chemotherapy maintenance immunotherapy in patients with stage IV non-small cell lung cancer: final results of a randomised phase 2 clinical trial

on behalf of the Vx-001-201 trial team, Cesare Gridelli, Tudor–Eliade Ciuleanu et al. · 2020 · British Journal of Cancer

BACKGROUND: CD8 + cytotoxic T cells; this immune response is associated with improved overall survival (OS) in patients with advanced/metastatic non-small cell lung cancer (NSCLC). METHODS: A randomised, double blind, phase 2b trial, in HLA-A*201-positive patients with metastatic, TERT-expressing NSCLC, who did not progress after first-line platinum-based chemotherapy were randomised to receive either Vx-001 or placebo. The primary endpoint of the trial was OS. RESULTS: Two hundred and twenty-one patients were randomised and 190 (101 and 89 patients in the placebo and the Vx-001 arm, respectiv

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Overcoming resistance to STING agonist therapy to incite durable protective antitumor immunity

Henrique Lemos, Rong Ou, Caroline McCardle et al. · 2020 · Journal for ImmunoTherapy of Cancer

BACKGROUND: Activating the Stimulator of Interferon Genes (STING) adaptor incites antitumor immunity against immunogenic tumors in mice, prompting clinical trials to test STING activators. However, STING signaling in the tumor microenvironment (TME) during development of Lewis lung carcinoma (LLC) suppresses antitumor immunity to promote tumor growth. We hypothesized that local immune balance favoring suppression of antitumor immunity also attenuates antitumor responses following STING activation. The purpose of this study was to evaluate how STING activation impacts antitumor responses in mic

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Negative / Null Result ReportOpen accessImmunology and Microbiology

Recruitment of TLR adapter TRIF to TLR4 signaling complex is mediated by the second helical region of TRIF TIR domain

Wenji Piao, Lisa W. Ru, Kurt H. Piepenbrink et al. · 2013 · Proceedings of the National Academy of Sciences

Toll/IL-1R resistance (TIR) domain-containing adapter-inducing IFN-β (TRIF) is a Toll-like receptor (TLR) adapter that mediates MyD88-independent induction of type I interferons through activation of IFN regulatory factor 3 and NFκB. We…

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