Analysis of Pro-inflammatory Cytokine and Type II Interferon Induction by Nanoparticles

Author(s):  
Timothy M. Potter ◽  
Barry W. Neun ◽  
Jamie C. Rodriguez ◽  
Anna N. Ilinskaya ◽  
Marina A. Dobrovolskaia
2021 ◽  
Author(s):  
◽  
Delgertsetseg Chuluundorj

<p><b>Multiple sclerosis (MS) is an incurable autoimmune disease of the CNS. Although its cause is not known, immune cells are involved in the disease progression. Among these cells, type I monocytes are first to arrive to the brain and initiate inflammation; however, if monocytes are type II activated, they can inhibit inflammation. Previous research has shown that immune responses can be modulated by treatments, such as glatiramer acetate (GA) and immune complexes (IC). Therefore, we aimed to determine whether GA and IC can induce type II activation of monocytes in MS.</b></p> <p>Human blood monocytes from healthy volunteers and MS patients were stimulated in vitro with bacterial lipopolysaccharide (classical activation) in the presence or absence of GA and immune complexes (IC) composed of IVIG and human red blood cells (type II activation). Flow cytometry, ELISA and cytometric bead array were used to assess levels of marker expression and cytokine production in order to define the activation of monocytes.</p> <p>Interestingly, while both GA and IC induced type II activation of monocytes, the characteristics of these type II monocytes were distinct. We have found that monocytes from both healthy people and MS patients have significantly lower levels of inflammatory marker CD40 and higher levels of the anti-inflammatory cytokine IL-10 after treatment with IC. In contrast, GA treatment reduced the levels of CD40, CD86 and the inflammatory cytokine IL- 12. Moreover, the combined addition of GA and IC appeared to be more effective in type II activating monocytes than either agent alone. We also found that both CD14++CD16- and CD14+CD16+ monocyte subsets can be type II activated by the treatments; however, an interaction between the subsets impaired their response to the treatments.</p> <p>Our study suggests that treatments with GA and IC, especially in combination, are effective in type II activation of human monocytes and can be beneficial therapeutic approaches for multiple sclerosis.</p>


1980 ◽  
Vol 17 (6) ◽  
pp. 969-972 ◽  
Author(s):  
G Sonnenfeld ◽  
C L Harned ◽  
S Thaniyavarn ◽  
T Huff ◽  
A D Mandel ◽  
...  

Author(s):  
Ran Cheng ◽  
Zhiwu Wu ◽  
Mingming Li ◽  
Meiying Shao ◽  
Tao Hu

AbstractInterleukin(IL)-1β, a pro-inflammatory cytokine, was elevated and participates in periodontitis. Not only the link between IL-1β and periodontitis was proved by clinical evidence, but also the increased IL-1β triggers a series of inflammatory reactions and promotes bone resorption. Currently, IL-1β blockage has been therapeutic strategies for autoimmune and autoinflammatory diseases such as rheumatoid arthritis, cryopyrin-associated periodic syndromes, gout and type II diabetes mellitus. It is speculated that IL-1β be a potential therapeutic target for periodontitis. The review focuses on the production, mechanism, present treatments and future potential strategies for IL-1β in periodontitis.


2021 ◽  
Author(s):  
◽  
Delgertsetseg Chuluundorj

<p><b>Multiple sclerosis (MS) is an incurable autoimmune disease of the CNS. Although its cause is not known, immune cells are involved in the disease progression. Among these cells, type I monocytes are first to arrive to the brain and initiate inflammation; however, if monocytes are type II activated, they can inhibit inflammation. Previous research has shown that immune responses can be modulated by treatments, such as glatiramer acetate (GA) and immune complexes (IC). Therefore, we aimed to determine whether GA and IC can induce type II activation of monocytes in MS.</b></p> <p>Human blood monocytes from healthy volunteers and MS patients were stimulated in vitro with bacterial lipopolysaccharide (classical activation) in the presence or absence of GA and immune complexes (IC) composed of IVIG and human red blood cells (type II activation). Flow cytometry, ELISA and cytometric bead array were used to assess levels of marker expression and cytokine production in order to define the activation of monocytes.</p> <p>Interestingly, while both GA and IC induced type II activation of monocytes, the characteristics of these type II monocytes were distinct. We have found that monocytes from both healthy people and MS patients have significantly lower levels of inflammatory marker CD40 and higher levels of the anti-inflammatory cytokine IL-10 after treatment with IC. In contrast, GA treatment reduced the levels of CD40, CD86 and the inflammatory cytokine IL- 12. Moreover, the combined addition of GA and IC appeared to be more effective in type II activating monocytes than either agent alone. We also found that both CD14++CD16- and CD14+CD16+ monocyte subsets can be type II activated by the treatments; however, an interaction between the subsets impaired their response to the treatments.</p> <p>Our study suggests that treatments with GA and IC, especially in combination, are effective in type II activation of human monocytes and can be beneficial therapeutic approaches for multiple sclerosis.</p>


2014 ◽  
Vol 166 ◽  
pp. 187-192 ◽  
Author(s):  
Ya-Mei Bai ◽  
Tung-Ping Su ◽  
Shih-Jen Tsai ◽  
Chiou Wen-Fei ◽  
Cheng-Ta Li ◽  
...  

1994 ◽  
Vol 144 ◽  
pp. 283-284
Author(s):  
G. Maris ◽  
E. Tifrea

The type II solar radio bursts produced by a shock wave passing through the solar corona are one of the most frequently studied solar activity phenomena. The scientific interest in this type of phenomenon is due to the fact that the presence of this radio event in a solar flare is an almost certain indicator of a future geophysical effect. The origin of the shock waves which produce these bursts is not at all simple; besides the shocks which are generated as a result of a strong energy release during the impulsive phase of a flare, there are also the shocks generated by a coronal mass ejection or the shocks which appear in the interplanetary space due to the supplementary acceleration of the solar particles.


Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.


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