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Topic Review
Subtelomeric Heterochromatin in Rye
The genome of cultivated rye, Secale cereale L., is considered one of the largest among species of the tribe Triticeae and thus it tops the average angiosperm genome and the genomes of its closest evolutionary neighbors, such as species of barley, Hordeum (by approximately 30–35%), and diploid wheat species, Triticum (approximately 25%).The review provides an analysis of the structural organization of subtelomeric heterochromatic regions of rye chromosomes with a description of the molecular mechanisms contributing to their size increase during evolution and the classes of DNA sequences involved in these processes. 
  • 260
  • 26 Jun 2023
Topic Review
Structure-Dynamic Determinants of Regulatory Divergence in Eukaryotic NCXs
The plasma-membrane Na+/Ca2+ exchangers (NCXs) mediate Ca2+ extrusion/entry to dynamically shape Ca2+ signaling in biological systems ranging from bacteria to humans. The NCX gene orthologs, isoforms, and their splice variants are expressed in a tissue-specific manner and exhibit nearly 104-fold differences in the transport rates and diverse regulatory specificities to match the cell-specific requirements. About 280 residues are directly involved in the folding of Ca2+ binding CBD1 and CBD2 domains that form a two-domain regulatory tandem (CBD12). The X-ray and NMR structures of the CBD1, CBD2, and CBD12 domains reveal a β-immunoglobulin (Ig)-like folding, where two antiparallel β-sheets (with A-B-E and D-C-F-G strands) form a seven-strand β-sandwich motif. The remarkable similarity between the folding structures of CBD1 and CBD2 is evident since the overlay of the CBD1 and CBD2 crystal structures display nearly identical folding with RMSD = 1.3 Å, although all the Ca2+ binding sites in both CBDs reside at the C-terminal ends of distal loops. However, the striking difference between the CBDs is that the CBD1 domain contains four Ca2+ binding sites in all known variants, whereas in the CBD2 domain, the splicing segment varies the number of Ca2+ binding sites from zero to three. The challenge is to resolve the underlying structure-dynamic mechanisms that can explain how the Ca2+ interactions with different variants of eukaryotic NCXs can result in positive, negative, and neutral responses. 
  • 241
  • 09 Jan 2023
Topic Review
Spinal-Deformities and Advancement in Corrective-Orthoses
Spinal deformity is an abnormality in the spinal curves and can seriously affect the activities of daily life. The conventional way to treat spinal deformities, such as scoliosis, kyphosis, and spondylolisthesis, is to use spinal orthoses (braces). Braces have been used for centuries to apply corrective forces to the spine to treat spinal deformities or to stabilize the spine during postoperative rehabilitation. Braces have not modernized with advancements in technology, and very few braces are equipped with smart sensory design and active actuation. There is a need to enable the orthotists, ergonomics practitioners, and developers to incorporate new technologies into the passive field of bracing. 
  • 1.8K
  • 30 Jan 2021
Topic Review
Sjögren’s Syndrome Lymphomagenesis
Sjögren’s Syndrome (SS) is a chronic autoimmune disorder characterized by focal mononuclear cell infiltrates that surround the ducts of the exocrine glands, impairing the function of their secretory units. Compared to other autoimmune disorders, SS is associated with a notably high incidence of non-Hodgkin lymphoma (NHL) and more frequently mucosa associated lymphoid tissue (MALT) lymphoma, leading to increased morbidity and mortality rates. High risk features of lymphoma development include systemic extraepithelial manifestations, low serum levels of complement component C4 and mixed type II cryoglobulinemia. The discrimination between reactive and neoplastic lymphoepithelial lesion (LEL) is challenging, probably reflecting a continuum in the evolution from purely inflammatory lymphoid infiltration to the clonal neoplastic evolution. Early lesions display a predominance of activated T cells, while B cells prevail in severe histologic lesions. This strong B cell infiltration is not only a morphologic phenomenon, but it is also progressively associated with the presence of ectopic germinal centers (GCs). 
  • 453
  • 08 Dec 2020
Topic Review
Seeking Sense in the Hox Gene Cluster
The Hox gene cluster, responsible for patterning of the head–tail axis, is an ancestral feature of all bilaterally symmetrical animals (the Bilateria) that remains intact in a wide range of species.
  • 856
  • 20 Dec 2022
Topic Review
Sedentary Lifestyle and Masticatory Dysfunction
Unhealthy brain aging and cognitive decline associate with a sedentary lifestyle and, at a cellular level, this is accompanied by astrocyte hypertrophy, myelin dysregulation, neurovascular dysfunction and the impairment of neurogenesis.
  • 330
  • 28 Jun 2022
Topic Review
Secretory Structures in Five Alismataceae Species
Alismataceae is a family consisting of floating to emergent aquatic or marsh herbs with a worldwide distribution. Limnocharitaceae was merged with Alismataceae to form one family comprising 17 genera and ca. 100 species.
  • 424
  • 22 Dec 2021
Topic Review
Seaweeds in Human Diet
Seaweeds have been harvested and used as food since ancient times in Asian countries, such as Korea, China, and especially Japan. There are over 600 recognized edible seaweed species and around 200 are consumed worldwide.
  • 331
  • 11 Jan 2023
Topic Review
Role of Liquid–Liquid Phase Separation in Cardiovascular Diseases
Liquid–liquid phase separation (LLPS) is a biochemical process in cells that can drive proteins, RNA, and other molecules to concentrate into droplets. These droplets do not have a lipid membrane but rather exist as distinct organelles relative to the surrounding environment, and act as biochemical reaction chambers. Significant progress has been made in the study of LLPS, especially in the neurodegenerative disease, cancer, and virology fields, but little is known about LLPS in cardiovascular disease (CVD).
  • 390
  • 18 Oct 2022
Topic Review
Real-Time Medical Diagnostic Equipment of Triboelectric Nanogenerators
The vast majority of diseases cause a gradual deterioration in the patient over time, and the rapid detection and treatment of diseases in their early stages can not only greatly reduce the investment in medical treatment required for patients, but also effectively reduce the severity of sequelae. TENG-based real-time medical monitoring equipment can provide a variety of physiological data measurements of the human body over a long time. And the equipment has different outputs with different raw materials and testing positions. Through terminal data analysis and processing, diseases can be quickly diagnosed, and personalized treatment plans can be provided for patients, effectively improving the use of medical resources.
  • 253
  • 23 Dec 2022
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