Advertisement

Topics

Normal aging hyperactivates innate immunity and reduces the medical efficacy of minocycline in brain injury.

08:00 EDT 12th April 2019 | BioPortfolio

Summary of "Normal aging hyperactivates innate immunity and reduces the medical efficacy of minocycline in brain injury."

Symptoms of many neurodegenerative diseases appear later in human life. However, young animal models for penetrating traumatic brain injury (pTBI) have been used to study neurodegenerative diseases and evaluate the efficacy of neuroprotective medicines. Possibly because of this discordance, effective neuroprotective drugs have still not been developed. For patients suffering from pTBI, aging is known to be a significant prognostic factor of mortality. In this study, we aimed to establish a model of aged pTBI animals using Drosophila melanogaster. We successfully generated aged pTBI flies as a new pTBI model showing increased neurodegeneration and higher mortality. To elucidate the mechanism of increased vulnerability in aged pTBI animals, we analyzed the GenBank-deposited transcriptome data of young and aged flies, demonstrating the importance of innate immunity genes for higher mortality in aged pTBI models. We found that in the context of pTBI, normal aging strongly activated the expression of antimicrobial peptide genes and upregulated the nuclear factor-κB gene in the immune deficiency pathway, but not the Toll pathway. Moreover, we found that minocycline increased the survival of young pTBI flies, but not aged pTBI flies. These results suggested that immune system activation under neurodegenerative conditions was involved in normal aging, thereby inhibiting the medicinal efficacy of neuroprotective drugs effective for young flies in aged flies.

Affiliation

Journal Details

This article was published in the following journal.

Name: Brain, behavior, and immunity
ISSN: 1090-2139
Pages:

Links

DeepDyve research library

PubMed Articles [23403 Associated PubMed Articles listed on BioPortfolio]

Hyperactive Innate Immunity Causes Degeneration of Dopamine Neurons upon Altering Activity of Cdk5.

Innate immunity is central to the pathophysiology of neurodegenerative disorders, but it remains unclear why immunity is altered in the disease state and whether changes in immunity are a cause or a c...

Disease or not, aging is easily treatable.

Is aging a disease? It does not matter because aging is already treated using a combination of several clinically-available drugs, including rapamycin. Whether aging is a disease depends on arbitrary ...

Blood coagulation: a powerful bactericidal mechanism of human innate immunity.

Infection proliferates and disseminates rapidly and so innate immunity should react effectively and fast. Innate immunity mechanisms depend upon fluid dynamics and are different in compartments with s...

Sympathetic neurotransmission in spleens from aging Brown-Norway rats subjected to reduced sympathetic tone.

Senescence of innate and adaptive responses and low-grade inflammation (inflammaging) hallmarks normal aging, which increases vulnerability to infectious diseases, autoimmunity and cancer. In normal a...

Peptidoglycan recognition proteins in insect immunity.

Insects lack an acquired immune system and rely solely on the innate immune system to combat microbial infection. The innate immunity of insects mainly depends on the interaction between the host's pa...

Clinical Trials [8193 Associated Clinical Trials listed on BioPortfolio]

The Effect of Statin Treatment on Trained Innate Immunity

The innate immune system plays a pivotal role in the development and progression of atherosclerosis. Recently, it was reported that monocytes can develop a long-lasting immunological memor...

Microbiota and Immune microEnvironment in Pouchitis

Microbiota and innate immunity in pouchitis: predisposing factors and modulation of the inflammation with probiotics. Around 20-25% of ulcerative colitis patients undergo restorative proc...

Evaluation of the Association of Polymorphisms in the Innate Immune System With the Risk for Cryptococcus Neoformans Infection in Patients Not Infected With HIV and Complications Associated With Cryptococcus Neoformans Infection

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may ...

Evaluation of the Association of Polymorphisms in the Innate Immune System With the Risk for Blastomycosis Dermatitidis Infection in Patients Not Infected With HIV and Complications Associated With Blastomycosis Dermatitidis Infection

Innate immunity plays an important role for fungal recognition and initiation of fungicidal activity. We hypothesize that subtle differences in different molecules of innate immunity may ...

SSRI Effects on Depression and Immunity in HIV/AIDS

This is a 10 week, double-blind, placebo controlled trial to evaluate SSRI (Selective Serotonin Reuptake Inhibitor) effects for treatment of depression in HIV/AIDS with a focus on innate i...

Medical and Biotech [MESH] Definitions

A secretory proteinase inhibitory protein that was initially purified from human SKIN. It is found in a variety mucosal secretions and is present at high levels in SPUTUM. Elafin may play a role in the innate immunity (IMMUNITY, INNATE) response of the LUNG.

Peptides and proteins found in BODILY SECRETIONS and BODY FLUIDS that are PROTEASE INHIBITORS. They play a role in INFLAMMATION, tissue repair and innate immunity (IMMUNITY, INNATE) by inhibiting endogenous proteinases such as those produced by LEUKOCYTES and exogenous proteases such as those produced by invading microorganisms.

The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from the presence of naturally occurring ANTI-INFECTIVE AGENTS, constitutional factors such as BODY TEMPERATURE and immediate acting immune cells such as NATURAL KILLER CELLS.

Cytosolic signaling adaptor proteins that were initially discovered by their role in the innate immunity (IMMUNITY, INNATE) response of organisms that lack an adaptive immune system. This class of proteins contains three domains, a C-terminal ligand recognition domain, an N-terminal effector-binding domain, and a centrally located nuclear-binding oligomerization domain. Many members of this class contain a C-terminal leucine rich domain which binds to PEPTIDOGLYCAN on the surface of BACTERIA and plays a role in pathogen resistance.

An SH2 domain-containing non-receptor tyrosine kinase that regulates signal transduction downstream of a variety of receptors including B-CELL ANTIGEN RECEPTORS. It functions in both INNATE IMMUNITY and ADAPTIVE IMMUNITY and also mediates signaling in CELL ADHESION; OSTEOGENESIS; PLATELET ACTIVATION; and vascular development.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Immunology
Allergies Automimmune Disease Human Papillomavirus (HPV) Immunology Vaccine Immunology is the study of immunity and the defence mechanisms of the body. A greater understanding of immunology is needed to develop vaccines, understand ...

Anxiety Disorders
Anxiety is caused by stress. It is a natural reaction, and is beneficial in helping us deal with tense situations and pressure. It is deterimental when is becomes an excessive, irrational dread of everyday situations. The most common types of anxiety di...


Searches Linking to this Article