Search results for "pathogen"

C-reactive protein and intercellular adhesion molecule-1 are stronger predictors of oxidant stress than blood pressure in established hypertension

2007

Oxidant stress is implicated in the pathogenesis of atherosclerosis in cardiovascular diseases. Our aim was to test oxidative stress, as 8-iso-prostaglandin F2alpha (8-iso-PGF2alpha), and its relationship with inflammation markers C-reactive protein (CRP) and tumour necrosis factor-alpha (TNFalpha), and endothelial activation assayed as soluble intercellular adhesion molecule (ICAM)-1 and vascular cell adhesion molecule (VCAM)-1 in essential hypertension.In 216 essential hypertensive patients and 55 healthy control individuals, plasma levels of high-sensitivity CRP and TNFalpha, 8-iso-PGF2alpha, ICAM-1 and VCAM-1 were measured in basal conditions. Moreover, basal and 24-h ambulatory blood p…

Role of interleukin-4 in pathogenesis of oral lichen planus : a systematic review

2020

Background Oral lichen planus (OLP) is a premalignant mucocutaneous disease that affects 1-2% of the adult population. Immunological factor may act as etiological factor. The cellular immune cells such as T cells are important in pathogenesis of OLP. Interleukin-4 (IL-4) is secreted by T-helper 2 (Th2). Several studies have been carried out on the role of IL-4 in OLP. The aim of this study was to review the level of IL-4 in OLP, effective factors in the production of IL-4 and its role in the development of OLP. Material and Methods A search in PubMed was performed on the literature published from 2000 until august 2019 using the following keywords: “oral lichen planus” or “OLP” and “interle…

Editorial Comment—Is Heme Oxygenase-1 a Causal Player for Plaque Stability?

2005

Inflammatory mechanisms play an important role in all stages of the atherosclerotic process.1 Various studies implicate that certain infectious agents represent candidates that trigger these inflammatory responses.2 An association of viral infection with atherosclerosis was first reported in the 1970s, when experimental infection of germ-free chickens with an avian herpes virus was found to produce arterial disease.3 Although several infectious pathogens have been detected within the atherosclerotic plaque, including Chlamydia pneumoniae , Cytomegalovirus, and Helicobacter pylori , the precise role of these pathogens in causing atherosclerosis or in aggravating the atherosclerotic process r…

Pro-inflammatory genetic background and zinc status in old atherosclerotic subjects.

2008

Inflammation and genetics are prominent mechanisms in the pathogenesis of atherosclerosis (AT) and its complications. In this review we discuss the possible impact on AT development of several genetic determinants involved in inflammation, oxidative stress and cytoprotection (IL-6, TNF-alpha, IL-10, CD14, TLR4, MT, HSP70). Genetic polymorphisms of these genes may affect a differential inflammatory response predisposing to AT. However, allelic polymorphisms of genes which increase the risk of AT frequently occur in the general population but, only adequate gene-environment-polymorphism interactions promote the onset of the disease. Zinc deficiency has been suggested as an environmental risk …

CCR5 Receptor: Biologic and Genetic Implications in Age-Related Diseases

2007

The CC chemokine receptor 5 (CCR5) is a member of CC-chemokine receptor family. CCR5 has the characteristic structure of a seven transmembrane G protein-coupled receptor (GPCR), which regulates trafficking and effector functions of memory/effector Th1 cells, macrophages, NK cells, and immature dendritic cells. CCR5 and its ligands are important molecules in viral pathogenesis. CCR5 represents the co-receptor for macrophage (M) and dual (T cell and M)-tropic immunodeficiency viruses. Recent evidence has also demonstrated the role of CCR5 in a variety of human diseases, ranging from infectious and inflammatory diseases to cancer. In this article, we describe the involvement of CCR5 in two age…

Immunological and immunogenetic markers in sporadic Alzheimer’s disease

2006

Background: Common polymorphisms of genes controlling inflammation-modulating cytokines and acute-phase proteins which play important roles in the pathogenesis of Alzheimer''s disease (AD) have been shown to be associated with AD. Aims: The immunological and immunogenetic markers potentially useful for the AD risk evaluation and diagnosis are briefly reviewed. Conclusion: The state-of-the-art of immunological and immunogenetic markers of AD indicates that new tools and strategies are necessary to identify gene products useful as diagnostic tools.

Senile cataract: a review on free radical related pathogenesis and antioxidant prevention

1990

Abstract Glutathione metabolism plays an essential role in the homeostasis of the lens. Thus, it is not surprising that experimental depletion of this substance leads to a process of lens disorganization similar to senile cataract and that in all types of irreversible cataract there is a decrease in the glutathione content of the lens. Therefore, it may be useful in preventive geriatrics to raise the glutathione concentration of the lens and, since glutathione monoethyl ester can cross the capsule and membranes of the lens, administration of this compound may be the treatment of choice. This could be complemented by long-term administration of small doses of acetylsalicylic acid, in the ear…

Biomarkers of oxidative and nitrosative damage in Alzheimer's disease and mild cognitive impairment

2009

Alzheimer's disease (AD) is the most common type of dementia in the elderly. Products of oxidative and nitrosative stress (OS and NS, respectively) accumulate with aging, which is the main risk factor for AD. This provides the basis for the involvement of OS and NS in AD pathogenesis. OS and NS occur in biological systems due to the dysregulation of the redox balance, caused by a deficiency of antioxidants and/or the overproduction of free radicals. Free radical attack against lipids, proteins, sugars and nucleic acids leads to the formation of bioproducts whose detection in fluids and tissues represents the currently available method for assessing oxidative/nitrosative damage. Post-mortem …

Agrobacterium tumefaciens-mediated trasformation of nonpathogenic and antagonistic Fusarium oxisporum with the jellyfish gene GFP.

2008

RNA2-encoded VP37 protein of Broad bean wilt virus 1 is a determinant of pathogenicity, host susceptibility, and a suppressor of post-transcriptional…

2020

Abstract Broad bean wilt virus 1 (BBWV‐1, genus Fabavirus, family Secoviridae) is a bipartite, single‐stranded positive‐sense RNA virus infecting many horticultural and ornamental crops worldwide. RNA1 encodes proteins involved in viral replication whereas RNA2 encodes two coat proteins (the large and small coat proteins) and two putative movement proteins (MPs) of different sizes with overlapping C‐terminal regions. In this work, we determined the role played by the small putative BBWV‐1 MP (VP37) on virus pathogenicity, host specificity, and suppression of post‐transcriptional gene silencing (PTGS). We engineered a BBWV‐1 35S‐driven full‐length cDNA infectious clone corresponding to BBWV‐…