Leukocytes in Inflammation, Resolution of Inflammation, Autoimmune Diseases and Cancer

Effect of Alpha-1 Antitrypsin and Irisin on Post-Exercise Inflammatory Response: A Narrative Review

Physical activity has a positive effect on human health and emotional well-being. However, in both amateur and professional athletes, training poses a risk of acute or chronic injury through repetitive overloading of bones, joints, and muscles. Inflammation can be an adverse effect of intense exercise caused by several factors including oxidative stress. The present narrative review summarizes current knowledge on inflammatory markers induced by physical exercise. Post-exercise recovery may reduce inflammatory responses and is key to effective training and adaptation of muscle tissues to sustained physical exertion.

Prediction of type 1 diabetes with machine learning algorithms based on FTIR spectral data in peripheral blood mononuclear cells

The incidence of autoimmunity is increasing, to ensure timely and comprehensive treatment, there must be a diagnostic method or markers that would be available to the general public. Fourier-transform infrared spectroscopy (FTIR) is a relatively inexpensive and accurate method for determining metabolic fingerprint. The metabolism, molecular composition and function of blood cells vary according to individual physiological and pathological conditions. Thus, by obtaining autoimmune disease-specific metabolic fingerprint markers in peripheral blood mononuclear cells (PBMC) and subsequently using machine learning algorithms, it might be possible to create a tool that will allow the diagnosis of autoimmune diseases. In this preliminary study, it was found that the peak shift at 1545 cm-1 could be considered specific for autoimmune disease type 1 diabetes (T1D), while the shifts at 1070 and 1417 cm-1 could be more attributed to the autoimmune condition per se. The prediction of T1D, despite the small number of participants in the study, showed an inverse AUC = 0.33 ± 0.096, n = 15, indicating a stable trend in the prediction of T1D based on FTIR metabolic fingerprint data in the PBMC.

Antioxidant and Anti-inflammatory Activities of Extract Ethanol Curcuma zedoaria

BACKGROUND:  Inflammation is a response of the body to injury or infection. When an injury occurs, the body will try to neutralize and eliminate harmful agents from the body and prepare for tissue repair. White turmeric is known to have secondary metabolites that have pharmacological activities such as antioxidants, antihyperlipidemia, antidiabetic and others. AIM: This study aims to determine the anti-inflammatory, antioxidant, total phenol and flavonoid activity of white turmeric ethanol extract. MATERIALS AND METHODS: This study used carrageenan as an inflammatory inducer. This study was divided into 5 groups, namely the normal group, the CMCNa group, the EEKP group at a dose of 300 mg/kg, the EEKP group at a dose of 600 mg/kg, and 900 mg/kg. And in this study, measurements of IC50, total flavonoids, and total phenol of white turmeric ethanol extract were carried out. The results showed that the ethanol extract of white turmeric at doses of 300, 600, and 900 mg/kgbw had anti-inflammatory activity by decreasing the percentage of inflammation and increasing the percentage of inflammation inhibition. The dose of 600 mg/kgbw had no statistically significant difference (p>0.05) with the diclofenac sodium group. RESULTS: Analysis of the results of inflammatory infiltration in gastric histopathology in groups P1, P2, P3 and P4 showed mild inflammatory infiltration compared to groups P(5) and K(+). While the description of the acinar glands on gastric histopathology showed that the P2 group gave a better picture of the acinar gland repair than the K(+), P2, P3, P4 and P5 groups. CONCLUSION: It can be concluded that white turmeric ethanol extract has anti-inflammatory and antioxidant activity.

Resolvin T-series reduce neutrophil extracellular traps

The newly identified 13-series (T-series) resolvins (RvTs) regulate phagocyte functions and accelerate resolution of infectious inflammation. Because severe acute respiratory syndrome coronavirus 2 elicits uncontrolled inflammation involving neutrophil extracellular traps (NETs), we tested whether stereochemically defined RvTs regulate NET formation. Using microfluidic devices capturing NETs in phorbol 12-myristate 13-acetate-stimulated human whole blood, the RvTs (RvT1-RvT4; 2.5 nM each) potently reduced NETs. With interleukin-1β-stimulated human neutrophils, each RvT dose and time dependently decreased NETosis, conveying ∼50% potencies at 10 nM, compared with a known NETosis inhibitor (10 μM). In a murine Staphylococcus aureus infection, RvTs (50 ng each) limited neutrophil infiltration, bacterial titers, and NETs. In addition, each RvT enhanced NET uptake by human macrophages; RvT2 was the most potent of the four RvTs, giving a >50% increase in NET-phagocytosis. As part of the intracellular signaling mechanism, RvT2 increased cyclic adenosine monophosphate and phospho-AMP-activated protein kinase (AMPK) within human macrophages, and RvT2-stimulated NET uptake was abolished by protein kinase A and AMPK inhibition. RvT2 also stimulated NET clearance by mouse macrophages in vivo. Together, these results provide evidence for novel pro-resolving functions of RvTs, namely reducing NETosis and enhancing macrophage NET clearance via a cyclic adenosine monophosphate-protein kinase A-AMPK axis. Thus, RvTs open opportunities for regulating NET-mediated collateral tissue damage during infection as well as monitoring NETs.