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Inflammatory Response

Inflammatory Response

An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...

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Effect of Anti-c-fms Antibody on Osteoclast Formation and Proliferation of Osteoclast Precursor In Vitro

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Fatostatin ameliorates inflammation without affecting cell viability.

Shuhe Ma¹, Kosaku Murakami², Kazune Tanaka¹

¹Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan.

|January 11, 2022

Summary

Fatostatin, a sterol regulatory element-binding protein (SREBP) inhibitor, demonstrates anti-inflammatory effects by reducing arthritis symptoms and inflammatory cytokine production without impacting cell viability.

Keywords:

SREBP cytokine fatostatin inflammation lipid

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Area of Science:

Biochemistry
Immunology
Pharmacology

Background:

Sterol regulatory element-binding protein (SREBP)1 is a transcription factor crucial for lipid synthesis.
SREBP1 plays a role in toll-like receptor 4-mediated inflammatory pathways.
Fatostatin inhibits SREBP maturation and function, but its anti-inflammatory role is not well-defined.

Purpose of the Study:

To evaluate the anti-inflammatory effects of fatostatin.
To investigate fatostatin's impact on SREBP-related inflammatory pathways.
To assess fatostatin's safety profile concerning cell viability.

Main Methods:

K/BxN serum-induced arthritis mouse model to assess in vivo anti-inflammatory effects.
Hematoxylin and eosin staining for joint tissue inflammation evaluation.
In vitro studies using human embryonic kidney cells to measure cytokine production and cell viability after lipopolysaccharide stimulation and fatostatin treatment.

Main Results:

Fatostatin treatment significantly reduced arthritis scores and hyperplasia in mice.
In vitro, fatostatin inhibited inflammatory cytokine secretion from lipopolysaccharide-activated cells.
Fatostatin did not affect the viability of the tested cells.

Conclusions:

Fatostatin exhibits significant anti-inflammatory properties.
Fatostatin modulates lipid transcription factor processing to exert its anti-inflammatory effects.
Fatostatin represents a potential therapeutic agent linking lipid regulation and inflammation management.