scholarly journals The Role of Monocytes and Macrophages in Human Atherosclerosis, Plaque Neoangiogenesis, and Atherothrombosis

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Francesco Moroni ◽  
Enrico Ammirati ◽  
Giuseppe Danilo Norata ◽  
Marco Magnoni ◽  
Paolo G. Camici
Keyword(s):  
Animal Studies ◽  
Arterial Wall ◽  
Causes Of Death ◽  
Complex Disease ◽  
Potential Role ◽  
Innate Immune ◽  
Pathogenic Role ◽  
Monocytes And Macrophages ◽  
Human Atherosclerosis

Atherosclerosis is one of the leading causes of death and disability worldwide. It is a complex disease characterized by lipid accumulation within the arterial wall, inflammation, local neoangiogenesis, and apoptosis. Innate immune effectors, in particular monocytes and macrophages, play a pivotal role in atherosclerosis initiation and progression. Although most of available evidence on the role of monocytes and macrophages in atherosclerosis is derived from animal studies, a growing body of evidence elucidating the role of these mononuclear cell subtypes in human atherosclerosis is currently accumulating. A novel pathogenic role of monocytes and macrophages in terms of atherosclerosis initiation and progression, in particular concerning the role of these cell subsets in neovascularization, has been discovered. The aim of the present article is to review currently available evidence on the role of monocytes and macrophages in human atherosclerosis and in relation to plaque characteristics, such as plaque neoangiogenesis, and patients’ prognosis and their potential role as biomarkers.

scholarly journals Primary and Memory Response of Human Monocytes to Vaccines: Role of Nanoparticulate Antigens in Inducing Innate Memory

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 931
Author(s):  
Mayra M. Ferrari Ferrari Barbosa ◽  
Alex Issamu Kanno ◽  
Leonardo Paiva Farias ◽  
Mariusz Madej ◽  
Gergö Sipos ◽  
...  
Keyword(s):  
Membrane Vesicles ◽  
Outer Membrane Vesicles ◽  
Innate Immune ◽  
Soluble Form ◽  
Neisseria Lactamica ◽  
Particulate Form ◽  
Future Challenges ◽  
Monocytes And Macrophages

Innate immune cells such as monocytes and macrophages are activated in response to microbial and other challenges and mount an inflammatory defensive response. Exposed cells develop the so-called innate memory, which allows them to react differently to a subsequent challenge, aiming at better protection. In this study, using human primary monocytes in vitro, we have assessed the memory-inducing capacity of two antigenic molecules of Schistosoma mansoni in soluble form compared to the same molecules coupled to outer membrane vesicles of Neisseria lactamica. The results show that particulate challenges are much more efficient than soluble molecules in inducing innate memory, which is measured as the production of inflammatory and anti-inflammatory cytokines (TNFα, IL-6, IL-10). Controls run with LPS from Klebsiella pneumoniae compared to the whole bacteria show that while LPS alone has strong memory-inducing capacity, the entire bacteria are more efficient. These data suggest that microbial antigens that are unable to induce innate immune activation can nevertheless participate in innate activation and memory when in a particulate form, which is a notion that supports the use of nanoparticulate antigens in vaccination strategies for achieving adjuvant-like effects of innate activation as well as priming for improved reactivity to future challenges.

scholarly journals Advances in the understanding of trauma-induced coagulopathy

Blood ◽  
2016 ◽  
Vol 128 (8) ◽  
pp. 1043-1049 ◽  
Author(s):  
Ronald Chang ◽  
Jessica C. Cardenas ◽  
Charles E. Wade ◽  
John B. Holcomb
Keyword(s):  
Animal Studies ◽  
Causes Of Death ◽  
Endothelial Activation ◽  
The United States ◽  
Trauma Patients ◽  
Platelet Dysfunction ◽  
Intracranial Injury ◽  
Trauma Induced Coagulopathy ◽  
Common Causes

Abstract Ten percent of deaths worldwide are due to trauma, and it is the third most common cause of death in the United States. Despite a profound upregulation in procoagulant mechanisms, one-quarter of trauma patients present with laboratory-based evidence of trauma-induced coagulopathy (TIC), which is associated with poorer outcomes including increased mortality. The most common causes of death after trauma are hemorrhage and traumatic brain injury (TBI). The management of TIC has significant implications in both because many hemorrhagic deaths could be preventable, and TIC is associated with progression of intracranial injury after TBI. This review covers the most recent evidence and advances in our understanding of TIC, including the role of platelet dysfunction, endothelial activation, and fibrinolysis. Trauma induces a plethora of biochemical and physiologic changes, and despite numerous studies reporting differences in coagulation parameters between trauma patients and uninjured controls, it is unclear whether some of these differences may be “normal” after trauma. Comparisons between trauma patients with differing outcomes and use of animal studies have shed some light on this issue, but much of the data continue to be correlative with causative links lacking. In particular, there are little data linking the laboratory-based abnormalities with true clinically evident coagulopathic bleeding. For these reasons, TIC continues to be a significant diagnostic and therapeutic challenge.

Houttuynia cordatamodulates oral innate immune mediators: potential role of herbal plant on oral health

Oral Diseases ◽  
2015 ◽  
Vol 21 (4) ◽  
pp. 512-518 ◽  
Author(s):  
S Satthakarn ◽  
WO Chung ◽  
A Promsong ◽  
W Nittayananta
Keyword(s):  
Oral Health ◽  
Potential Role ◽  
Innate Immune ◽  
Immune Mediators ◽  
Herbal Plant

scholarly journals Borrelia burgdorferi Resistance to a Major Skin Antimicrobial Peptide Is Independent of Outer Surface Lipoprotein Content

2009 ◽  
Vol 53 (10) ◽  
pp. 4490-4494 ◽  
Author(s):  
Amit Sarkar ◽  
Kit Tilly ◽  
Philip Stewart ◽  
Aaron Bestor ◽  
James M. Battisti ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Antimicrobial Peptide ◽  
Immune Evasion ◽  
Essential Role ◽  
Potential Role ◽  
Innate Immune ◽  
Initial Stage ◽  
Mammalian Infection ◽  
Innate Immune Evasion

ABSTRACT We hypothesize a potential role for Borrelia burgdorferi OspC in innate immune evasion at the initial stage of mammalian infection. We demonstrate that B. burgdorferi is resistant to high levels (>200 μg/ml) of cathelicidin and that this antimicrobial peptide exhibits limited binding to the spirochetal outer membrane, irrespective of OspC or other abundant surface lipoproteins. We conclude that the essential role of OspC is unrelated to resistance to this component of innate immunity.

Potential Role of Darvyadi Kwatha in the Management of Diabetes

The Healer ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 80-86
Author(s):  
Shankar Gautam ◽  
Abhishek Upadhyay ◽  
Rashmi Mutha ◽  
BINOD KUMAR SINGH ◽  
Ram Kishor Joshi
Keyword(s):  
Causes Of Death ◽  
Potential Role ◽  
Critical Role ◽  
Animal Experiments ◽  
Safety Evaluation ◽  
New Drugs ◽  
Effective Management ◽  
The Individual ◽  
Glucose 6 Phosphate Dehydrogenase

Diabetes is a clinical condition characterized by a spike in blood glucose in plasma. It is one of the 21st century's greatest public health crises and is among the top 10 causes of death worldwide. Although new drugs and therapeutics are emerging for its management but the prevalence is increasing at an alarming pace; thus, every system must contribute for effective management. An effort is made to review the efficacy and safety evaluation of the individual herbs of Darvyadi Kwatha (DK), an Ayurvedic formulation mentioned in Charaka Samhita. The constituents of the DK has some strong efficient antidiabetic/hypoglycaemic chemical principle having insulin-triggering and insulin-like behaviors which increases the activity of glucose-6-phosphate dehydrogenase (G6PD) and glucokinase and decreases glucose-6-phosphatase activity, reduce oxidative stress and prevention of glutathione reductase, superoxide dismutase, and catalase activity play a critical role in glucose homeostasis. DK also improve biochemical parameters such as SGPT, SGOT, cholesterol and triglycerides and is found to be safe in animal experiments. The various evidences clearly indicates that DK has definite hypoglycemic potential as well as anti-diabetic activity.

scholarly journals Ozone Therapy as Adjuvant for Cancer Treatment: Is Further Research Warranted?

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Bernardino Clavo ◽  
Norberto Santana-Rodríguez ◽  
Pedro Llontop ◽  
Dominga Gutiérrez ◽  
Gerardo Suárez ◽  
...  
Keyword(s):  
Cancer Treatment ◽  
Immune Modulation ◽  
Animal Studies ◽  
Potential Role ◽  
Randomized Clinical Trials ◽  
Tumor Hypoxia ◽  
Tumor Resection ◽  
Ozone Therapy

Introduction. This article provides an overview of the potential use of ozone as an adjuvant during cancer treatment.Methods. We summarize the findings of the most relevant publications focused on this goal, and we include our related clinical experience.Results. Over several decades, prestigious journals have publishedin vitrostudies on the capacity of ozone to induce direct damage on tumor cells and, as well, to enhance the effects of radiotherapy and chemotherapy. Indirect effects have been demonstrated in animal models: immune modulation by ozone alone and sensitizing effect of radiotherapy by concurrent ozone administration. The effects of ozone in modifying hemoglobin dissociation curve, 2,3-diphosphoglycerate levels, locoregional blood flow, and tumor hypoxia provide additional support for potential beneficial effects during cancer treatment. Unfortunately, only a few clinical studies are available. Finally, we describe some works and our experience supporting the potential role of local ozone therapy in treating delayed healing after tumor resection, to avoid delays in commencing radiotherapy and chemotherapy.Conclusions.In vitroand animal studies, as well as isolated clinical reports, suggest the potential role of ozone as an adjuvant during radiotherapy and/or chemotherapy. However, further research, such as randomized clinical trials, is required to demonstrate its potential usefulness as an adjuvant therapeutic tool.

scholarly journals Toll-Like Receptors, Their Ligands, and Atherosclerosis

2011 ◽  
Vol 11 ◽  
pp. 437-453 ◽  
Author(s):  
Conrad P. Hodgkinson ◽  
Shu Ye
Keyword(s):  
Arterial Wall ◽  
Cell Types ◽  
Innate Immune ◽  
Toll Like Receptors ◽  
Increased Risk ◽  
Inflammatory Proteins ◽  
Endogenous Proteins ◽  
Molecular Patterns ◽  
Microbial Agents

Atherosclerosis is a disease characterized by inflammation in the arterial wall. Atherogenesis is dependent on the innate immune response involving activation of Toll-like receptors (TLRs) and the expression of inflammatory proteins. TLRs, which recognize various pathogen-associated molecular patterns, are expressed in various cell types within the atherosclerotic plaque. Microbial agents are associated with an increased risk of atherosclerosis and this is, in part, due to activation of TLRs. Recently considerable evidence has been provided suggesting that endogenous proteins promote atherosclerosis by binding to TLRs. In this review, we describe the role of TLRs in atherosclerosis with particular emphasis on those atherogenic endogenous proteins that have been implicated as TLR ligands.

scholarly journals Potential Role of miRNAs in the Acquisition of Chemoresistance in Neuroblastoma

2021 ◽  
Vol 11 (2) ◽  
pp. 107
Author(s):  
Barbara Marengo ◽  
Alessandra Pulliero ◽  
Maria Valeria Corrias ◽  
Riccardo Leardi ◽  
Emanuele Farinini ◽  
...  
Keyword(s):  
Causes Of Death ◽  
Potential Role ◽  
Principal Component ◽  
Analysis Data ◽  
Mycn Amplification ◽  
Rna Sequences ◽  
Primary Tumors ◽  
Non Coding Rna

Neuroblastoma (NB) accounts for about 8–10% of pediatric cancers, and the main causes of death are the presence of metastases and the acquisition of chemoresistance. Metastatic NB is characterized by MYCN amplification that correlates with changes in the expression of miRNAs, which are small non-coding RNA sequences, playing a crucial role in NB development and chemoresistance. In the present study, miRNA expression was analyzed in two human MYCN-amplified NB cell lines, one sensitive (HTLA-230) and one resistant to Etoposide (ER-HTLA), by microarray and RT-qPCR techniques. These analyses showed that miRNA-15a, -16-1, -19b, -218, and -338 were down-regulated in ER-HTLA cells. In order to validate the presence of this down-regulation in vivo, the expression of these miRNAs was analyzed in primary tumors, metastases, and bone marrow of therapy responder and non-responder pediatric patients. Principal component analysis data showed that the expression of miRNA-19b, -218, and -338 influenced metastases, and that the expression levels of all miRNAs analyzed were higher in therapy responders in respect to non-responders. Collectively, these findings suggest that these miRNAs might be involved in the regulation of the drug response, and could be employed for therapeutic purposes.

scholarly journals Role of Vitamin D in Systemic Lupus Erythematosus

2014 ◽  
Vol 2 (4) ◽  
pp. 662-667 ◽  
Author(s):  
Rada Miskovic ◽  
Aleksandra Plavsic ◽  
Jasna Bolpacic ◽  
Sanvila Raskovic ◽  
Mirjana Bogic
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Vitamin D ◽  
Lupus Erythematosus ◽  
Animal Studies ◽  
Potential Role ◽  
Vitamin D Supplementation ◽  
Vitamin D Status ◽  
Systemic Lupus

Vitamin D is a steroid hormone that in addition to its well known role in the metabolism of calcium and phosphorus exerts immunoregulatory properties. Data from animal studies and from prospective clinical trials on patients with rheumatoid arthritis, multiple sclerosis and type 1 diabetes point to the potential role of vitamin D as important environmental factor in the development of autoimmune diseases. Such role of vitamin D in systemic lupus erythematosus (SLE) has not yet been sufficiently studied. This review shows the sources, metabolism and mechanism of action of vitamin D, its effect on the cells of the immune system, prevalence and causes of vitamin D deficiency in patients with SLE, the link between vitamin D status and disease activity as well as recommendations for vitamin D supplementation.

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