scholarly journals Expression of tumor necrosis factor - α (TNF-α) and interleukin 1-β (IL1-β) in chronic tubotympanic suppurative otitis media

Author(s):  
Anton Budhi Darmawan ◽  
Marsetyawan HNE Soesatyo ◽  
Ratna Dwi Restuti ◽  
Agus Surono
2002 ◽  
Vol 126 (4) ◽  
pp. 417-422 ◽  
Author(s):  
Sertac Yetiser ◽  
Bulent Satar ◽  
Atilla Gumusgun ◽  
Faruk Unal ◽  
Yalcin Ozkaptan

OBJECTIVE: Based on interleukin (IL)-1β and tumor necrosis factor (TNF)-α levels in effusions, our goals were to specify either recurrent or persistent otitis media with effusion (OME) is a mid stage in the development of chronic disease and to identify the factors that have an influence on cytokine levels. STUDY DESIGN: Samples from groups with recurrent (n = 15) and persistent (n = 39) OME were essayed for IL-1 β and TNF-α. Children were also grouped with respect to age, sex, quality of effusion, and the presence of pharyngeal adenoid tissue. SETTING: Tertiary referral center. RESULTS: In recurrent and persistent OME groups, IL-1β was higher than TNF-α ( P < 0.01). IL-β was higher in recurrent OME than in persistent OME ( P < 0.05). CONCLUSION: Recurrent OME seems to be closer to the chronic stage of the disease relative to persistent OME in terms of higher IL-1 β levels. Each exacerbation of acute disease in recurrent otitis media is likely to be mediated by IL-1 β. SIGNIFICANCE: We were able to clarify that recurrent OME is a stage that occurs before chronic OME. Therefore, the prevention of acute attacks in recurrent disease would also impede long-term damage to the middle ear.


FEBS Letters ◽  
1997 ◽  
Vol 405 (2) ◽  
pp. 213-218 ◽  
Author(s):  
Martin Knöfler ◽  
Herbert Kiss ◽  
Barbara Mösl ◽  
Christian Egarter ◽  
Peter Husslein

Author(s):  
M. Kabu ◽  
C. Uyarlar

Background: This study aims to determine the concentration of serum haptoglobin (Hp), interleukin 1 (IL-1β), interleukin 6 (IL-6) and tumor necrosis factor-α (TNF-α) in cases of Pneumonia, Pneumoenteritis and Enteritis. Methods: 60 calves were subjected to the study and they were divided into four groups. The study group consisted of the claves diagnosed with clinical pneumonia (Group P; n=15), pneumoenteritis (Group PE; n=15) and enteritis (Group E; n=15) while the control group included the healthy calves (Group C; n=15). The measurements of the concentration of serum haptoglobin (Hp), interleukin 1 (IL-1β), interleukin 6 (IL-6) and tumor necrosis factor-α (TNF-α), Total protein (TP) and Albumin (ALB) were made by using commercial kits. Conclusion: In all infection groups (P, PE ve E), Haptoglobin concentration, serum cytokine (IL-1β, IL-6 and TNF-α) and Albumin values were found to have been higher than the control group (p≤0,005). However, there was no difference in total protein. In the light of these findings, it is suggested that routine controls for Haptoglobin and cytokine (IL-1β, IL-6 and TNF-α) concentrations would be rewarding to determine the severity of the infection, to choose the suitable treatment and to detect subclinical infections in veterinary medicine.


2019 ◽  
Vol 88 ◽  
pp. 149-150 ◽  
Author(s):  
Erkoseoglu Ilknur ◽  
Kadioglu Mine ◽  
Cavusoglu Irem ◽  
Sisman Mulkiye ◽  
Aran Turhan ◽  
...  

2017 ◽  
Vol 9 ◽  
pp. 117957351770927 ◽  
Author(s):  
Rudy Chang ◽  
Kei-Lwun Yee ◽  
Rachita K Sumbria

Tumor necrosis factor α (TNF-α) plays a central role in the pathophysiology of Alzheimer’s disease (AD). Food and Drug Administration–approved biologic TNF-α inhibitors are thus a potential treatment for AD, but they do not cross the blood-brain barrier. In this short review, we discuss the involvement of TNF-α in AD, challenges associated with the development of existing biologic TNF-α inhibitors for AD, and potential therapeutic strategies for targeting TNF-α for AD therapy.


2002 ◽  
Vol 283 (4) ◽  
pp. G947-G956 ◽  
Author(s):  
Nathan W. Werneburg ◽  
M. Eugenia Guicciardi ◽  
Steven F. Bronk ◽  
Gregory J. Gores

Cathepsin B (Cat B) is released from lysososomes during tumor necrosis factor-α (TNF-α) cytotoxic signaling in hepatocytes and contributes to cell death. Sphingosine has recently been implicated in lysosomal permeabilization and is increased in the liver by TNF-α. Thus the aims of this study were to examine the mechanisms involved in TNF-α-associated lysosomal permeabilization, especially the role of sphingosine. Confocal microscopy demonstrated Cat B-green fluorescent protein and LysoTracker Red were both released from lysosomes after treatment of McNtcp.24 cells with TNF-α/actinomycin D, a finding compatible with lysosomal destabilization. In contrast, endosomes labeled with Texas Red dextran remained intact, suggesting lysosomes were specifically targeted for permeabilization. LysoTracker Red was released from lysosomes in hepatocytes treated with TNF-α or sphingosine in Cat B(+/+) but not Cat B(−/−) hepatocytes, as assessed by a fluorescence-based assay. With the use of a calcein release assay in isolated lysosomes, sphingosine permeabilized liver lysosomes isolated from Cat B(+/+) but not Cat B(−/−) liver. C6ceramide did not permeabilize lysosomes. In conclusion, these data implicate a sphingosine-Cat B interaction inducing lysosomal destabilization during TNF-α cytotoxic signaling.


2009 ◽  
Vol 36 (4) ◽  
pp. 837-842 ◽  
Author(s):  
ANA FILIPA MOURÃO ◽  
JOANA CAETANO-LOPES ◽  
PAULA COSTA ◽  
HELENA CANHÃO ◽  
MARIA JOSÉ SANTOS ◽  
...  

Objective.Considering the relevance of tumor necrosis factor-α (TNF-α) in the pathophysiology of juvenile idiopathic arthritis (JIA), it is likely that polymorphisms in its promoter area may be relevant in disease susceptibility and activity. We investigated if clinical measures of JIA activity and TNF-α serum concentrations were associated with TNF-α −308 genotypes.Methods.Portuguese patients with JIA in 5 pediatric rheumatology centers were recruited consecutively, along with a control group of healthy subjects. Demographic and clinical data and blood samples were collected from each patient. DNA was extracted for analysis of TNF-α gene promoter polymorphisms at position −308 by restriction fragment-length polymorphism.Results.One hundred fourteen patients and 117 controls were evaluated; 57% of patients presented the oligoarticular subtype, 25% the polyarticular subtype, 8% the systemic subtype, and 9% had enthesitis-related arthritis and 5% psoriatic arthritis. Twenty-four percent of the patients presented the −308 GA/AA genotypes and 76% the −308 GG genotype, similar to findings in controls. Patients with the −308 GA/AA genotype had higher degree of functional impairment, erythrocyte sedimentation rate, 100-mm visual analog scale score for disease activity, and TNF-α levels compared to those with the −308 GG genotype.Conclusion.TNF-α −308 GA/AA genotypes were found to be related to higher inflammatory activity and worse measures of disease activity in Portuguese patients with JIA. They were not associated with susceptibility to JIA.


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