Encyclopedia
Scholarly Community
Encyclopedia
Entry
Video
Image
Journal
Book
News
About
Log in/Sign up
Submit
Entry
Video
Image
and
or
not
All
${ type }
To
Search
Subject:
All Disciplines
Arts & Humanities
Biology & Life Sciences
Business & Economics
Chemistry & Materials Science
Computer Science & Mathematics
Engineering
Environmental & Earth Sciences
Medicine & Pharmacology
Physical Sciences
Public Health & Healthcare
Social Sciences
Sort:
Most Viewed
Latest
Alphabetical (A-Z)
Alphabetical (Z-A)
Filter:
All
Topic Review
Biography
Peer Reviewed Entry
Video Entry
Topic Review
Effects of Melatonin on Cryopreservation-Induced Oxidative Stress
It is widely accepted that oxidative stress (OS) coming from a wide variety of causes has detrimental effects on male fertility. Antioxidants could have a significant role in the treatment of male infertility, and the systematic research on the role of melatonin to ameliorate OS clearly shows that improvement of semen parameters follows melatonin supplementation.
412
18 Oct 2023
Topic Review
Multimodal Communication in Plant Environment
Stink bugs use semiochemicals to communicate over long distances and exchange vibratory signals that are transmitted on plants over shorter distances. These signals are produced by various mechanisms, such as body vibration (tremulation) or drumming on the substrate, and are accompanied by visual, chemical, and mechanical signals and cues when they encounter a mate.
411
07 Jan 2022
Topic Review
Regulatory Element Database for Fly
The REDfly (Regulatory Element Database for Fly) database (http://redfly.ccr.buffalo.edu/, accessed on 27 July 2022) integrates all of the available insect cis-regulatory information from multiple sources to provide a comprehensive collection of known regulatory elements.
411
28 Jul 2022
Topic Review
TLR9
Toll-like receptor 9 is a protein that in humans is encoded by the TLR9 gene. TLR9 has also been designated as CD289 (cluster of differentiation 289). It is a member of the toll-like receptor (TLR) family. TLR9 is an important receptor expressed in immune system cells including dendritic cells, macrophages, natural killer cells, and other antigen presenting cells. TLR9 preferentially binds DNA present in bacteria and viruses, and triggers signaling cascades that lead to a pro-inflammatory cytokine response. Cancer, infection, and tissue damage can all modulate TLR9 expression and activation. TLR9 is also an important factor in autoimmune diseases, and there is active research into synthetic TLR9 agonists and antagonists that help regulate autoimmune inflammation.
410
11 Oct 2022
Topic Review
European Eel
The European eel (Anguilla anguilla) is a migratory, catadromous fish species, consisting of a single stock, distributed throughout the European continent as well as in the Mediterranean basin, which reproduces in the Atlantic Ocean and for which the panmixia hypothesis is currently accepted.
410
03 Apr 2023
Topic Review
Ethical Approach in Echinoderms
The majority of ethical and welfare approaches in animal research have primarily focused on vertebrates. Echinoderms are a phylum of marine invertebrates. They are often key, long-living species that shape and maintain the status of many marine ecosystems, inhabiting a wide range of ecological niches from the abyssal depths of the oceans to the intertidal zone. Progress has been made toward developing an ethical framework for invertebrates, such as crustaceans, echinoderms, and cephalopods.
410
15 Nov 2023
Topic Review
Circulating Tumor Cells and DNA in Precision Oncology
Liquid biopsies allow for the detection of cancer biomarkers such as circulating tumor cells (CTCs) and circulating tumor DNA (ctDNA). Elevated levels of these biomarkers during cancer treatment could potentially serve as indicators of cancer progression and shed light on the mechanisms of metastasis and therapy resistance. Thus, liquid biopsies serve as tools for cancer detection and monitoring through a simple, non-invasive blood draw, allowing multiple longitudinal sampling. These circulating markers have significant prospects for use in assessing patients’ prognosis, monitoring response to therapy, and developing precision medicine. In addition, single-cell omics of these liquid biopsy markers can be potential tools for identifying tumor heterogeneity and plasticity as well as novel therapeutic targets.
409
27 Jul 2022
Topic Review
miRNA in Molecular Diagnostics
miRNAs influence the expression of numerous proteins, including the expression of tumor suppressors and protooncogenes, thus becoming oncogenes and tumor suppressors themselves. As the same miRNA can have different targets in different tissues, its function will also be different in different types of tumors, depending on the intracellular milieu and the set of proteins for which its translation is modulated. Therefore, the same miRNA can act as a tumor suppressor and an oncogene in different tumors. Even in the same tumor, the same miRNA can be involved in regulation circles with feedback loops and potentially affect both tumor suppressors and oncogenes. As 50% of miRNA genes are located in regions associated with cancers, their expression is found to be deregulated in tumors. miRNAs were found to be members of signaling circuits, often involving also long non-coding RNAs (lnc RNAs) and circular RNAs (cRNAs).
409
22 Sep 2022
Topic Review
Intra-Articular Platelet-Rich Plasma Injections in Knee Osteoarthritis
Primary knee osteoarthritis (OA) continues to be a hard-to-control degenerative disease. Intra-articular corticosteroids are typically advised, but only for short-term pain alleviation, given that their benefits last only a few weeks. The efficacy of hyaluronic acid is controversial. When the aforesaid options fail, total knee arthroplasty is generally recommended as an efficacious treatment. However, it is costly and can involve medical and postoperative complications. Therefore, determining alternate safe and effective treatments for knee OA is paramount. Platelet-rich plasma (PRP) has lately been investigated for the treatment of knee OA.
408
28 Feb 2022
Topic Review
Phytochemical of
Euphorbia neriifolia
In the Indian subcontinents, Euphorbia neriifolia Linn. (EN) is one of the valuable plants from the big family of Euphorbiaceae, which is usually found in rocky and hilly areas. E. neriifolia was found to be useful in curing tumors, abdominal swelling, bronchial infection, hydrophobia, earache, cough and cold, asthma, leprosy, gonorrhea, spleen enlargement, leucoderma, snake bites, scorpion stings, and causing appetite improvement, etc. Different in vitro and in vivo experimental studies were performed to determine the antioxidant, anti-diabetic, immunomodulatory, anti-inflammatory, anti-arthritic, wound healing, anti-atherosclerosis, radioprotective, anti-anxiety, anti-convulsant, anti-psychotic, anti-thrombotic, dermal irritation, hemolytic, analgesic, anti-fertility, diuretic, anti-microbial, anti-diarrheal, and anti-carcinogenic activities of the various parts of EN. Several bioactive compounds, such as euphol, nerifoliol, taraxerol, euphonerins A–G, lectin, etc., were isolated from E. neriifolia and need to be investigated further for various biological activities (cardiovascular and neuronal diseases). In the pharmaceutical sector, E. neriifolia was selected for the development of new drugs due to its broad pharmacological activities.
408
23 Oct 2023
Topic Review
The Phenomenon of Ash Dieback
Common ash F. excelsior is a species with demanding soil requirements, needing fertile, moist sites with neutral pH. For many years, common ash was considered a species resistant to diseases, including pathogenic oomycetes of the genus Phytophthora.
408
15 Nov 2023
Topic Review
IL-6 Cytokine Family in Breast Cancer
The IL-6 cytokine family is a group of signaling molecules with wide expression and function across vertebrates. Each member of the family signals by binding to its specific receptor and at least one molecule of gp130, which is the common transmembrane receptor subunit for the whole group. Signal transduction upon stimulation of the receptor complex results in the activation of multiple downstream cascades, among which, in mammary cells, the JAK-STAT3 pathway plays a central role. The role of the IL-6 cytokine family—specifically IL-6 itself, LIF, OSM, and IL-11—as relevant players during breast cancer progression was summarized. The evidence indicating that this group of soluble factors may be used for early and more precise breast cancer diagnosis and to design targeted therapy to treat or even prevent metastasis development,particularly to the bone. Expression profiles and possible therapeutic use of their specific receptors in the different breast cancer subtypes are also described. In addition, participation of these cytokines in pathologies of the breast linked to lactation and involution of the gland, as post-partum breast cancer and mastitis, is discussed.
406
16 Mar 2022
Topic Review
Gastric Stump Cancer after Partial Gastrectomy
Distal gastrectomy for benign gastroduodenal peptic disease has become rare, but it still represents a widely adopted procedure for advanced and, in some countries, even for early distal gastric cancer.
405
25 Mar 2022
Topic Review
Fungal Host Defence
Humans have developed complex immune systems that defend against invading microbes, including fungal pathogens. Many highly specialized cells of the immune system share the ability to store antimicrobial compounds in membrane bound organelles that can be immediately deployed to eradicate or inhibit growth of invading pathogens. These membrane-bound organelles consist of secretory vesicles or granules, which move to the surface of the cell, where they fuse with the plasma membrane to release their contents in the process of degranulation. Lymphocytes, macrophages, neutrophils, mast cells, eosinophils, and basophils all degranulate in fungal host defence. While anti-microbial secretory vesicles are shared among different immune cell types, information about each cell type has emerged independently leading to an uncoordinated and confusing classification of granules and incomplete description of the mechanism by which they are deployed. While there are important differences, there are many similarities in granule morphology, granule content, stimulus for degranulation, granule trafficking, and release of granules against fungal pathogens.
403
30 Jun 2021
Topic Review
Zebrafish Research
Zebrafish (Danio rerio) are a versatile and invaluable model organism in scientific research. These small, freshwater fish have gained prominence due to their transparency, rapid development, and genetic tractability. Zebrafish embryos are transparent, allowing researchers to observe developmental processes in real time, making them ideal for studies in developmental biology. Their genetic makeup can be easily manipulated, enabling forward and reverse genetics studies, including the use of advanced techniques like CRISPR-Cas9. Zebrafish have made significant contributions to various research areas, such as neurobiology, where their neural development and behaviors are studied. They are also crucial in disease modeling, including cancer, cardiovascular diseases, and neurodegenerative disorders, providing insights into disease mechanisms and potential therapies. Furthermore, zebrafish play a pivotal role in drug discovery, toxicology, regenerative medicine, and environmental studies. Despite certain limitations, their unique attributes continue to drive breakthroughs in scientific understanding and medical advancements.
403
09 Oct 2023
Topic Review
TRPA1 as a Factor in Migraine-Related Intracranial Hypersensitivity
The transient receptor potential ankyrin 1 (TRPA1) has gained more attention in migraine-related research. The involvement of the TRPA1 receptor in migraine headaches is proposed by the fact that TRPA1 may be a target of some migraine-triggering factors. Although it is doubtful that activation of TRPA1 alone is sufficient to induce pain, behavioral studies have demonstrated that TRPA1 is involved in injury- and inflammation-induced hypersensitivity. Here, the functional relevance of TRPA1 in headaches and its therapeutic potential was introduced, mainly focusing on its role in the development of hypersensitivity, referring to its altered expression in pathological conditions, and its functional interaction with other TRP channels.
402
09 Jun 2023
Topic Review
S-100 Proteins
S100s are a group of calcium-binding proteins which received this name because of their solubility in a 100% saturated solution of ammonium sulphate at neutral pH. All members of the S100 protein family have a similar molecular mass of 10–12 KDa, and they each share 25–65% similarity in their amino acid sequence.
402
03 Jul 2023
Topic Review
SPARC Gene in Mesothelioma
The SPARC gene plays multiple roles in extracellular matrix synthesis and cell shaping, associated with tumor cell migration, invasion, and metastasis. The SPARC gene is also involved in the epithelial-mesenchymal transition (EMT) process, which is a critical phenomenon leading to a more aggressive cancer cell phenotype. SPARC gene overexpression has shown to be associated with poor survival in the mesothelioma (MESO) cohort from the TCGA database, indicating that this gene may be a powerful prognostic factor in MESO.
402
27 Jul 2023
Topic Review
Life’s Mechanism
The state of ‘being alive’ is difficult to characterize because ‘life’ is currently defined using superficial features or long-term processes, rather than a single physical property unique to living things. Here, a mechanistic theory and definition of life is outlined, based on the observation that a disparate range of biomolecules share the principle of uniplanar conformation state changes that direct thermodynamic disequilibria into progressive motion to perform work.
402
24 Aug 2023
Topic Review
Diopatra
The genus Diopatra is a major driver in sedimentary systems, altering the structure of habitats and changing the frequency of refugia and predator access to prey. It is taken as prey by a variety of shorebirds, crustaceans, and fish and used worldwide as bait.
401
05 Sep 2023
Page
of
47
Featured Entry Collections
>>
Featured Books
>>
Encyclopedia of Social Sciences
Chief Editor:
Kum Fai Yuen
Encyclopedia of COVID-19
Chief Editor:
Stephen Bustin
Encyclopedia of Fungi
Chief Editor:
Luis V. Lopez-Llorca
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Chief Editor:
Sandro Serpa
Entry
Video
Image
Journal
Book
News
About
Log in/Sign up
New Entry
New Video
New Images
About
Terms and Conditions
Privacy Policy
Advisory Board
Contact
Partner
ScholarVision Creations
Feedback
Top
Feedback
×
Help Center
Browse our user manual, common Q&A, author guidelines, etc.
Rate your experience
Let us know your experience and what we could improve.
Report an error
Is something wrong? Please let us know!
Other feedback
Other feedback you would like to report.
×
Did you find what you were looking for?
Love
Like
Neutral
Dislike
Hate
0
/500
Email
Do you agree to share your valuable feedback publicly on
Encyclopedia
’s homepage?
Yes, I agree. Encyclopedia can post it.
No, I do not agree. I would not like to post my testimonial.
Webpage
Upload a screenshot
(Max file size 2MB)
Submit
Back
Close
×