Your browser does not fully support modern features. Please upgrade for a smoother experience.
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 by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Topic Review
Anoikis in Brief
Anoikis, a term rooted in the Greek word "anoikos," meaning homelessness. Anoikis is a fundamental process in cellular biology, orchestrating programmed cell death when cells lose their anchorage by detaching from the extracellular matrix (ECM) or surrounding tissue. Beyond its crucial role in maintaining tissue homeostasis, anoikis is deeply intertwined with the complex landscape of cancer biology, metastasis, and tissue regeneration. We embark on a journey through the molecular mechanisms governing anoikis, highlighting its significance in normal physiological processes. However, when it comes to cancer, anoikis dysregulation emerges as a harbinger of disease progression. Cancer cells acquire the ability to evade anoikis, empowering them to navigate the challenges of metastasis by surviving in the bloodstream and colonizing distant organs. They exhibit invasive capabilities, infiltrating neighboring tissues and fueling local tumor expansion. Moreover, this resistance extends to therapeutic interventions, making cancer cells resilient to conventional treatments like chemotherapy and radiation therapy. We also explore the mechanisms behind cancer cells' evasion of anoikis, shedding light on alterations in apoptotic pathways, activation of survival signaling, epithelial-mesenchymal transition (EMT), and the role of autophagy in promoting survival during detachment. The promising realm of targeting anoikis resistance in cancer treatment is unveiled, with approaches including apoptosis inducers, inhibitors of survival signaling, anti-EMT therapies, and autophagy inhibitors. These strategies hold potential to restore anoikis sensitivity in cancer cells and curb metastasis, offering hope to patients battling this relentless disease. Comprehending anoikis and its dysregulation in cancer is a pivotal step toward developing innovative therapeutic interventions. By targeting anoikis resistance, we aim to improve treatment outcomes, overcome therapy resistance, and ultimately provide renewed hope to cancer patients facing this formidable adversary.
  • 1.1K
  • 15 Sep 2023
Topic Review
Regulation of p53 by E3s
p53 plays a role in different biological processes such as proliferation, invasion, pluripotency, metabolism, cell cycle control, ROS (reactive oxygen species) production, apoptosis, inflammation and autophagy.
  • 1.1K
  • 29 Mar 2021
Topic Review
Role of α-Synuclein in Serotonin System Regulation
Pathologically, Parkinson’s disease (PD) is characterized by the loss of dopamine (DA) neurons in the substantia nigra pars compacta (SNc) and the presence of intracellular inclusions, called Lewy bodies and Lewy neurites, composed mostly of α-synuclein (α-Syn). Much of PD research has focused on the role of α-Syn aggregates in the degeneration of SNc DA neurons due to the impact of striatal DA deficits on classical motor phenotypes. However, abundant Lewy pathology is also found in other brain regions including the midbrain raphe nuclei, which may contribute to non-motor symptoms. Indeed, dysfunction of the serotonergic (5-HT) system, which regulates mood and emotional pathways, occurs during the premotor phase of PD. 
  • 1.1K
  • 25 Apr 2023
Topic Review
Inflammasomes in Psoriasis
Inflammasomes are high-molecular-weight protein complexes that may cleave the two main proinflammatory cytokines, pro-interleukin-1β and pro-interleukin-18, into active forms, and contribute to psoriasis. Despite recent advances made in the pathogenesis of psoriasis, mainly studied as an autoimmune condition, activation of immune response triggers of psoriasis is still not completely understood. Recently, focus was placed on the role of inflammasomes in the pathogenesis of psoriasis. Multiple types of inhibitors and activators of various inflammasomes, inflammasome-related genes, and genetic susceptibility loci were recognized in psoriasis.
  • 1.1K
  • 17 Jun 2021
Topic Review
Sinonasal Inverted Papilloma and Squamous Cell Carcinoma
Inverted papillomas (IP) are the most common sinonasal tumor with a tendency for recurrence, potential attachment to the orbit and skull base, and risk of malignant degeneration into squamous cell carcinoma (SCC). While the overall rate of recurrence has decreased with the widespread adoption of high-definition endoscopic optics and advanced surgical tools, there remain challenges in managing tumors that are multiply recurrent or involve vital neurovascular structures. The World Health Organization has defined three subtypes of sinonasal Schneiderian papillomas: inverted, exophytic, and oncocytic lesions.
  • 1.1K
  • 23 May 2022
Topic Review
Discoidin Domain Receptor
Discoidin domain receptor (DDR) is a collagen-activated receptor tyrosine kinase that plays critical roles in regulating essential cellular processes such as morphogenesis, differentiation, proliferation, adhesion, migration, invasion, and matrix remodeling. As a result, DDR dysregulation has been attributed to a variety of human cancer disorders, for instance, non-small-cell lung carcinoma (NSCLC), ovarian cancer, glioblastoma, and breast cancer, in addition to some inflammatory and neurodegenerative disorders. Since the target identification in the early 1990s to date, a lot of efforts have been devoted to the development of DDR inhibitors.
  • 1.1K
  • 28 Jun 2021
Topic Review
Nrf2 Activation in Peripheral Neuropathic Pain
Nuclear factor erythroid 2 (NFE2)-related factor 2 (Nrf2) is a transcription factor encoded by the NFE2L2 gene and is a member of the cap ‘n’ collar subfamily of basic region leucine zipper transcription factors. 
  • 1.1K
  • 28 Mar 2022
Topic Review
Adrenomedullin/PAMP’s Roles in the Digestive System
Adrenomedullin (AM) and proadrenomedullin N-terminal 20 peptide (PAMP) are two bioactive peptides derived from the same precursor with several biological functions including vasodilation, angiogenesis, or anti-inflammation, among others. AM and PAMP are widely expressed throughout the gastrointestinal (GI) tract where they behave as GI hormones, regulating numerous physiological processes such as gastric emptying, gastric acid release, insulin secretion, bowel movements, or intestinal barrier function. 
  • 1.1K
  • 15 Feb 2022
Topic Review
Voltammetry in Studies on Drug and Alcohol Addictions
Drug and alcohol addictions are chronic psychiatric conditions, which are characterized by uncontrolled substance seeking and taking behaviors, and long-lasting vulnerability to relapse. A wealth of evidence demonstrated that altered dopamine signaling is involved in all stages of this psychopathology. Due to a high temporal resolution and sufficient chemical specificity, fast-scan cyclic voltammetry was especially helpful in studying abnormalities in dopamine transmission in advanced animal models of addictions.
  • 1.1K
  • 18 Oct 2022
Topic Review
Mitochondrial Functioning and Cognitive Ability
Performance in one cognitive domain, such as attentional control, is positively correlated with performance in all other cognitive domains, such as reading comprehension, and performance in all of these domains is correlated with current and predictive of later health outcomes. These relations suggest a common biological mechanism that contributes to cognition and health; moreover, this mechanism has been linked to systematic and parallel declines in cognition and health with normal aging. Mitochondrial functioning, including contributions to cellular energy production, control of oxidative stress, immunity, and intracellular signaling (among others), is well situated to explain at least some of these links. Indeed, mitochondrial dysfunction contributes to the cognitive declines (e.g., memory loss) associated with age-related diseases, such as Alzheimer’s disease, but the links are broader than this. A focus on mitochondrial functioning provides a means to better integrate research in cell biology and cognitive science, and in doing so will expand our understanding of the fundamental biological mechanisms that underlie brain and cognitive development and functioning and result in more sensitive assessments of age- and pathology-related changes in cognition.
  • 1.1K
  • 29 Mar 2022
Topic Review
Polyphenols and Heat Stress
Heat stress is a non-specific physiological response of the body when exposed to high ambient temperatures, which can break the balance of body redox and result in oxidative stress that affects growth performance as well as the health of animal and poultry species. Polyphenols have attracted much attention in recent years due to their antioxidant ability and thus, can be an effective attenuator of heat stress.
  • 1.1K
  • 13 Aug 2021
Topic Review
Warburg Effect in Colorectal Carcinogenesis
Colorectal cancer is one of the most leading causes of death worldwide. The Hallmark of colorectal cancer is the increase of glucose uptake and lactate production even in the presence of oxygen, a phenomenon known as the “Warburg effect”. 
  • 1.0K
  • 26 Sep 2021
Topic Review
CRISPR Screen
Genome-wide CRISPR/Cas9 screen provides a robust and unbiased means for interrogating such genes, and a series of landmark reports since its introduction in 2014 have demonstrated that the technology yields high-quality functional hits. This technology, in combination with other orthogonal methods for studying protein function on a systems scale, can provide valuable functional insights that would take years to establish using conventional methods.
  • 1.0K
  • 01 Dec 2021
Topic Review
Antigenicity of the Brucella Cell Wall
The members of Brucella spp. as Gram-negative bacteria are characterized by their sandwich-structured cell envelopes composed of the lipopolysaccharide (LPS)-covered bacterial outer membrane and the inner cytoplasmic cell membrane with a thin peptidoglycan layer between them in the periplasmic space.
  • 1.0K
  • 23 May 2023
Topic Review
Splicing Factors in Prostate Cancer
Although inhibition of the androgen–androgen receptor (AR) axis effectively represses the growth of prostate cancer, most of all cases eventually become castration-resistant prostate cancers (CRPCs). Enhancement of the expression of AR and its variants along with the downstream signals is important for disease progression. AR-V7, a constitutive active form of AR, is generated as a result of RNA splicing. RNA splicing creates multiple transcript variants from one pre-messenger RNA (mRNA) by removing introns/exons to allow mRNA translation. The molecular mechanisms leading to marked increases of AR and generation of AR-V7 have been unclear. However, recent papers highlighted the roles of RNA splicing factors which promote AR expression and production of variants. Notably, a broad range of splicing components were aberrantly regulated in CRPC tissues. Interestingly, expression of various spliceosome genes is enhanced by RNA-binding protein splicing factor proline- and glutamine-rich (PSF/SFPQ), leading to changes in the expression of AR transcript variants. Moreover, inhibition of several splicing factors repressed tumor growth in vivo. Altered expression of splicing factors is correlated to biochemical recurrence in prostate cancer patients. 
  • 1.0K
  • 18 Sep 2021
Topic Review
Lectin Activity
A purificação de biomoléculas com alto grau de especificidade, como as lectinas, tem despertado interesse no uso de leitos fixos não tradicionais funcionalizados com ligantes de particular interesse. A interação é robusta o suficiente para permitir a adsorção de glicoproteínas e reversível o suficiente para permitir a dissociação de moléculas em resposta a mudanças no pH da solução. Estudos sobre adsorventes não convencionais, como suportes cromatográficos, podem fundamentar, enriquecer e auxiliar projetos em diversas áreas do conhecimento. Criogênios de poliacrilamida são emergentes e eficientes, podendo ser sintetizados e ter suas matrizes modificadas para múltiplos fins e técnicas cromatográficas. Também são funcionais e apresentam baixo custo quando comparados aos adsorventes cromatográficos convencionais. Nesse contexto, as lectinas podem ser utilizadas principalmente na prevenção de doenças autoimunes e em estudos com biossensores.
  • 1.0K
  • 18 May 2023
Topic Review
Melanocortins Protect against Diabetes Caused by Obesity
Melanocortins, a group of cleavage peptide products of pro-opiomelanocortin (POMC), activate melanocortin receptors on the surface of a diverse range of cell types, leading to different biological actions. They are so named because of their melanotropic activity, that is, the ability of melanocortins to increase pigmentation in melanocytes in the skin and hair follicles, increase concentrations of eumelanin and prevent an increase in photosensitive pheomelanin. Melanocortins are produced by POMC neurons in the pars intermedia of the pituitary gland, the hypothalamic arcuate nucleus and the dorsal medullary nucleus of the solitary tract. They can be distinguished by the presence of an invariant amino acid sequence in each melanocortin peptide, His-Phe-Arg-Trp. The melanocortins produced in humans include alpha-melanocyte stimulating hormone (α-MSH), beta-melanocyte stimulating hormone (β-MSH), gamma-melanocyte stimulating hormone (γ-MSH) and adrenocorticotropic hormone (ACTH).
  • 1.0K
  • 26 Feb 2024
Topic Review
Phagocytosis in Human and C.elegans
Endocytosis provides the cellular nutrition and homeostasis of organisms, but pathogens often take advantage of this entry point to infect host cells. This is counteracted by phagocytosis that plays a key role in the protection against invading microbes both during the initial engulfment of pathogens and in the clearance of infected cells. Phagocytic cells balance two vital functions: preventing the accumulation of cell corpses to avoid pathological inflammation and autoimmunity, whilst maintaining host defence. In this review, we compare elements of phagocytosis in mammals and the nematode Caenorhabditis elegans. Initial recognition of infection requires different mechanisms. In mammals, pattern recognition receptors bind pathogens directly, whereas activation of the innate immune response in the nematode rather relies on the detection of cellular damage. In contrast, molecules involved in efferocytosis—the engulfment and elimination of dying cells and cell debris—are highly conserved between the two species. Therefore, C. elegans is a powerful model to research mechanisms of the phagocytic machinery. Finally, we show that both mammalian and worm studies help to understand how the two phagocytic functions are interconnected: emerging data suggest the activation of innate immunity as a consequence of defective apoptotic cell clearance. 
  • 1.0K
  • 18 Sep 2021
Topic Review
Cinnamomum osmophloeum and Oral Mucositis
Cinnamon plants (Cinnamomum spp.) are of the genus Lauraceae, native to South and Southeast Asia, and are generally used as food flavors and traditional medicinal plants. Cinnamomum osmophloeum, commonly known as indigenous cinnamon or pseudocinnamon, is endemic to Taiwan’s natural hardwood forests.
  • 1.0K
  • 24 Jun 2021
Topic Review
Zinc Transporters of the Brain
Zinc ions play an essential role in the physiology of brain function. Zinc acts as a potent neuromodulatory agent and signaling ions, regulating healthy brain development and the function of both neurons and glial cells. Therefore, the concentration of zinc within the brain and its cells is tightly controlled. Zinc transporters are key regulators of (extra-)cellular zinc levels, and deregulation of zinc homeostasis and zinc transporters has been associated with neurodegenerative and neuropsychiatric disorders. Here, more information is provided about the presence of specific zinc transporters and their subcellular localization within brain cells (neurons, astrocytes).
  • 1.0K
  • 12 May 2021
  • Page
  • of
  • 48
Featured Entry Collections
>>

Featured Reprints

>>
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Medieval Royal Iconography
Academic Video Service
Feedback