scholarly journals Psoriasis: Keratinocytes or Immune Cells – Which Is the Trigger?

Dermatology ◽  
2018 ◽  
Vol 235 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Farida Benhadou ◽  
Dillon Mintoff ◽  
Véronique del Marmol
Keyword(s):  
Immune Cells ◽  
Complex Disease ◽  
Murine Models ◽  
Cell Type ◽  
Chronological Order ◽  
Inflammatory Skin Disorder ◽  
Underlying Mechanisms ◽  
Transgenic Murine Models ◽  
Dynamic Interplay

Background: Psoriasis is a common, chronic inflammatory skin disorder, which can significantly impact quality of life. Despite major breakthroughs in our understanding of the pathogenesis of psoriasis, the chronological order of the underlying mechanisms leading to the development of psoriatic plaques remains to be completely understood. Summary: Although psoriasis is classically perceived as a T-cell disease, it is now well recognized that T lymphocytes do not function in exclusivity. This theory is supported by evidence from transgenic murine models that develop marked psoriasiform disease. In addition, immune cells and cytokines regulate both early and late events involved in the pathogenesis of psoriasis. Key Messages: Psoriasis is a complex disease – a dynamic interplay between immune cells, keratinocytes, and various other skin-resident cells, such as endothelial and immune cells. The contribution of each cell type is crucial in the initiation and maintenance phases of psoriatic alterations.

scholarly journals The Contribution of the Immune System in Bone Metastasis Pathogenesis

2019 ◽  
Vol 20 (4) ◽  
pp. 999 ◽  
Author(s):  
Lisha Xiang ◽  
Daniele Gilkes
Keyword(s):  
Bone Metastasis ◽  
Immune Cells ◽  
Immune Cell ◽  
Suppressor Cells ◽  
Disseminated Tumor Cells ◽  
Myeloid Derived Suppressor Cells ◽  
Bone Microenvironment ◽  
Cell Type ◽  
Cell Metastasis

Bone metastasis is associated with significant morbidity for cancer patients and results in a reduced quality of life. The bone marrow is a fertile soil containing a complex composition of immune cells that may actually provide an immune-privileged niche for disseminated tumor cells to colonize and proliferate. In this unique immune milieu, multiple immune cells including T cells, natural killer cells, macrophages, dendritic cells, myeloid-derived suppressor cells, and neutrophils are involved in the process of bone metastasis. In this review, we will discuss the crosstalk between immune cells in bone microenvironment and their involvement with cancer cell metastasis to the bone. Furthermore, we will highlight the anti-tumoral and pro-tumoral function of each immune cell type that contributes to bone metastasis. We will end with a discussion of current therapeutic strategies aimed at sensitizing immune cells.

scholarly journals Clinical and Radiological Phenotypes and Endotypes

2021 ◽  
Vol 42 (04) ◽  
pp. 549-555
Author(s):  
Ricardo J. José ◽  
Michael R. Loebinger
Keyword(s):  
Quality Of Life ◽  
Airway Inflammation ◽  
Complex Disease ◽  
Molecular Pathways ◽  
Improve Quality ◽  
Drug Responses ◽  
Radiological Features ◽  
Underlying Mechanisms ◽  
Cellular Immune

AbstractBronchiectasis is a heterogenous disease with multiple etiologies and associated comorbidities. As bronchiectasis is a complex disease, it is unsound to think of it as a single disease particularly when the differing etiologies are likely to be driving bronchiectasis through initial divergent molecular pathways, known as endotypes, that phenotypically present as the same disease due to protracted airway inflammation, but revealing potential differing underlying mechanisms that may have disparity of drug responses. Improved understanding of the cellular immune, inflammatory, and microbiological milieu associated with clinical and radiological features of bronchiectasis has resulted in the recognition of important endotypes and phenotypes that will allow for personalized treatments to improve quality of life and outcomes of patients with bronchiectasis. Here we discuss clinical and radiological phenotypes, as well as emerging molecular endotypes that are possible treatable traits in bronchiectasis.

Modified Intermittent Fasting in Psoriasis (MANGO) trial: a two-arm pilot randomized controlled open cross-over study (Preprint)

2020 ◽  
Author(s):  
Lynda Grine ◽  
Niels Hilhorst ◽  
Nathalie Michels ◽  
Souheila Abbedou ◽  
Stefaan De Henauw ◽  
...  
Keyword(s):  
Complex Disease ◽  
Intermittent Fasting ◽  
Gut Health ◽  
Metabolic Markers ◽  
Regular Diet ◽  
Beneficial Effects ◽  
General Quality ◽  
Randomized Control ◽  
Psoriasis Severity

BACKGROUND Psoriasis is a complex disease associated with multiple comorbidities, including metabolic syndrome and leaky gut syndrome. Dietary lifestyle interventions have been reported to affect the disease in terms of lesional severity. It remains unclear how diets affect these comorbidities and the general health in psoriasis patients. Modified Intermittent Fasting (MIF) on 2 non-consecutive days has shown beneficial effects on metabolic parameters. A significant advantage of MIF over the currently investigated dietary changes is its feasibility. OBJECTIVE Here, we aim to study the effects of MIF on skin, gut and metabolic health in psoriasis patients. METHODS A two-arm pilot prospective cross-over randomized control trial (RCT) will be performed in 20 patients with psoriasis as a pilot study. Patients will be randomized 1:1 to either start with MIF and subsequent regular diet for 12 weeks each or to start with regular diet and subsequent MIF for 12 weeks each. The following parameters will be assessed: demographics, disease phenotype, medical and familial history, psoriasis severity, dermatology-specific and general quality of life, nutritional and physical habits, mental and intestinal health, intestinal and cutaneous integrity, inflammatory and metabolic markers, and satisfaction. RESULTS The aim is to uncover the effects of MIF on psoriasis severity and gut health integrity through clinical and molecular investigation. More precisely, we want to map the evolution of the different markers in response to MIF as compared to the regular diet, such as psoriasis severity, permeability and inflammation. CONCLUSIONS Understanding how dietary lifestyles can affect epithelial lineages such as the skin and gut, will greatly improve our understanding on the development of psoriasis and may pose a non-pharmacological venue for treatments. CLINICALTRIAL ClinicalTrials.gov, NCT04418791. Registered June 5 2020, https://clinicaltrials.gov/ct2/show/NCT04418791. Current protocol date/version: May 20 2020

scholarly journals Remodeling Alzheimer-amyloidosis models by seeding

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Brittany S. Ulm ◽  
David R. Borchelt ◽  
Brenda D. Moore
Keyword(s):  
Amyloid Precursor Protein ◽  
Neurodegenerative Diseases ◽  
Amyloid Beta ◽  
Precursor Protein ◽  
Time Interval ◽  
Murine Models ◽  
Brain Pathology ◽  
Amyloid Deposits ◽  
Transgenic Murine Models ◽  
Mutant Genes

AbstractAlzheimer’s disease (AD) is among the most prevalent neurodegenerative diseases, with brain pathology defined by extracellular amyloid beta deposits and intracellular tau aggregates. To aid in research efforts to improve understanding of this disease, transgenic murine models have been developed that replicate aspects of AD pathology. Familial AD is associated with mutations in the amyloid precursor protein and in the presenilins (associated with amyloidosis); transgenic amyloid models feature one or more of these mutant genes. Recent advances in seeding methods provide a means to alter the morphology of resultant amyloid deposits and the age that pathology develops. In this review, we discuss the variety of factors that influence the seeding of amyloid beta pathology, including the source of seed, the time interval after seeding, the nature of the transgenic host, and the preparation of the seeding inoculum.

Downregulation of renal TonEBP in hypokalemic rats

2007 ◽  
Vol 293 (1) ◽  
pp. F408-F415 ◽  
Author(s):  
Un Sil Jeon ◽  
Ki-Hwan Han ◽  
Soo-Hyun Park ◽  
Sang Do Lee ◽  
Mee Rie Sheen ◽  
...  
Keyword(s):  
Cultured Cells ◽  
Renal Medulla ◽  
Distal Tubule ◽  
Cell Type ◽  
Outer Medulla ◽  
Sodium Transporters ◽  
Enhancer Binding Protein ◽  
Collecting Ducts ◽  
Cell Type Specific ◽  
Underlying Mechanisms

Hypokalemia causes a significant decrease in the tonicity of the renal medullary interstitium in association with reduced expression of sodium transporters in the distal tubule. We asked whether hypokalemia caused downregulation of the tonicity-responsive enhancer binding protein (TonEBP) transcriptional activator in the renal medulla due to the reduced tonicity. We found that the abundance of TonEBP decreased significantly in the outer and inner medullas of hypokalemic rats. Underlying mechanisms appeared different in the two regions because the abundance of TonEBP mRNA was lower in the outer medulla but unchanged in the inner medulla. Immunohistochemical examination of TonEBP revealed cell type-specific differences. TonEBP expression decreased dramatically in the outer and inner medullary collecting ducts, thick ascending limbs, and interstitial cells. In the descending and ascending thin limbs, TonEBP abundance decreased modestly. In the outer medulla, TonEBP shifted to the cytoplasm in the descending thin limbs. As expected, transcription of aldose reductase, a target of TonEBP, was decreased since the abundance of mRNA and protein was reduced. Downregulation of TonEBP appeared to have also contributed to reduced expression of aquaporin-2 and UT-A urea transporters in the renal medulla. In cultured cells, expression and activity of TonEBP were not affected by reduced potassium concentrations in the medium. These data support the view that medullary tonicity regulates expression and nuclear distribution of TonEBP in the renal medulla in cell type-specific manners.

Rethinking FQoL: The Dynamic Interplay Between Individual and Family Quality of Life

2017 ◽  
Vol 14 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Femke Boelsma ◽  
Irene Caubo-Damen ◽  
Alice Schippers ◽  
Menco Dane ◽  
Tineke A. Abma
Keyword(s):  
Quality Of Life ◽  
Family Quality Of Life ◽  
Dynamic Interplay

scholarly journals Application of microRNA Database Mining in Biomarker Discovery and Identification of Therapeutic Targets for Complex Disease

2020 ◽  
Vol 4 (1) ◽  
pp. 5
Author(s):  
Jennifer L. Major ◽  
Rushita A. Bagchi ◽  
Julie Pires da Silva
Keyword(s):  
Complex Disease ◽  
Biomarker Discovery ◽  
Ischemia Reperfusion Injury ◽  
Ischemia Reperfusion ◽  
Expression Patterns ◽  
Therapeutic Targets ◽  
Human Diseases ◽  
Mirna Expression Data ◽  
Artery Disease ◽  
Underlying Mechanisms

Over the past two decades, it has become increasingly evident that microRNAs (miRNA) play a major role in human diseases such as cancer and cardiovascular diseases. Moreover, their easy detection in circulation has made them a tantalizing target for biomarkers of disease. This surge in interest has led to the accumulation of a vast amount of miRNA expression data, prediction tools, and repositories. We used the Human microRNA Disease Database (HMDD) to discover miRNAs which shared expression patterns in the related diseases of ischemia/reperfusion injury, coronary artery disease, stroke, and obesity as a model to identify miRNA candidates for biomarker and/or therapeutic intervention in complex human diseases. Our analysis identified a single miRNA, hsa-miR-21, which was casually linked to all four pathologies, and numerous others which have been detected in the circulation in more than one of the diseases. Target analysis revealed that hsa-miR-21 can regulate a number of genes related to inflammation and cell growth/death which are major underlying mechanisms of these related diseases. Our study demonstrates a model for researchers to use HMDD in combination with gene analysis tools to identify miRNAs which could serve as biomarkers and/or therapeutic targets of complex human diseases.

scholarly journals Показники клітинного імунітету індиків, уражених асоціативною еймеріозо-гістомонозною інвазією та лікованих бровітакокцидом сукупно з плодами розторопші плямистої

2013 ◽  
pp. 110-112
Author(s):  
І. І. Харів
Keyword(s):  
Intestinal Mucosa ◽  
Immune Cells ◽  
Milk Thistle ◽  
Cell Type ◽  
Nonspecific Immunity ◽  
Metabolic Products ◽  
Specific Phase

У слизовій оболонці кишечника еймерії та гістомонади виділяють продукти метаболізму, що діють токсично на різні системи і тканини індиків. Вони знижують активність сенсибілізованих клітин (клітинний тип), пригнічують специфічну фазу імунітету, представлену антитілами (гуморальний тип), сповільнюють неспецифічну фазу імунітету, що представлена різними імунними клітинами. За еймеріозо-гістомонозної інвазії в індиків швидше й повніше відбувається відновлення показників неспецифічного імунітету. In the intestinal mucosa eymeriyi and histomonady produce metabolic products that are toxic to different systems and tissues of turkeys. They reduce the activity of sensitized cells (cell type), inhibit specific phase of immunity provided by antibodies (humoral type), slow down the phase of nonspecific immunity, which is represented by different immune cells. When turkeys have eymeriozo-histomonozniy invasion faster and complete renewal of nonspecific immunity is found if brovitakoktsyd was given together with milk thistle fruit.

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