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Topic Review
Impaired Mitophagy in Neurons and Glial Cells
Aging is associated with a decline in cognitive function, which can partly be explained by the accumulation of damage to the brain cells over time. Neurons and glia undergo morphological and ultrastructure changes during aging. Over the past several years, it has become evident that at the cellular level, various hallmarks of an aging brain are closely related to mitophagy. The importance of mitochondria quality and quantity control through mitophagy is highlighted by the contribution that defects in mitochondria–autophagy crosstalk make to aging and age-related diseases.
  • 391
  • 11 Jan 2022
Topic Review
Anticancer Effects of R-Loops
R-loops are three-stranded DNA/RNA hybrids that form by the annealing of the mRNA transcript to its coding template while displacing the non-coding strand. While R-loop formation regulates physiological genomic and mitochondrial transcription and DNA damage response, imbalanced R-loop formation can be a threat to the genomic integrity of the cell. As such, R-loop formation is a double-edged sword in cancer progression, and perturbed R-loop homeostasis is observed across various malignancies. 
  • 393
  • 10 May 2023
Topic Review
Roles of Non-Coding RNA in Alzheimer’s Disease Pathophysiology
Alzheimer’s disease (AD) is a chronic neurodegenerative disorder that is accompanied by deficits in memory and cognitive functions. The disease is pathologically characterised by the accumulation and aggregation of an extracellular peptide referred to as amyloid-β (Aβ) in the form of amyloid plaques and the intracellular aggregation of a hyperphosphorelated protein tau in the form of neurofibrillary tangles (NFTs) that cause neuroinflammation, synaptic dysfunction, and oxidative stress. The search for pathomechanisms leading to disease onset and progression has identified many key players that include genetic, epigenetic, behavioural, and environmental factors, which lend support to the fact that this is a multi-faceted disease where failure in various systems contributes to disease onset and progression. Although the vast majority of individuals present with the sporadic (non-genetic) form of the disease, dysfunctions in numerous protein-coding and non-coding genes have been implicated in mechanisms contributing to the disease.
  • 391
  • 25 Aug 2023
Topic Review
NK Cells in Pregnancy
NK cells are lymphocytes involved in the innate and adaptative immune response. These cells differ from T and B lymphocytes by the expression of preferentially CD16, CD56 markers. NK cells are located in peripheral blood and tissues with ample functions, from immune vigilant to tolerogenic reactions. The presence of tissue-resident NK cells has been observed in several species.
  • 390
  • 12 Jul 2021
Topic Review
Epstein-Barr Virus Lytic Genes in Carcinogenesis
Epstein-Barr virus (EBV) was the first human tumor virus to be discovered and is a causative agent for several cancer types of epithelial and lymphoid origin. EBV has two life cycles comprised of latent and lytic phases. The lytic cycle is when new virions are produced, whereas the latent cycle is a state of persistent infection without productive viral replication. It has been recognized that latent infection is the predominant mode of infection in EBV-associated cancers and the expression of a restricted set of latent genes drives disease development. 
  • 390
  • 15 Dec 2022
Topic Review
Plasmodium falciparum Development from Gametocyte to Oocyst
Malaria elimination never succeed without the implementation of transmission-blocking strategies. The transmission of Plasmodium spp. parasites from the human host to the mosquito vector depends on circulating gametocytes in the peripheral blood of the vertebrate host. Once ingested by the mosquito during blood meals, these sexual forms undergo a series of radical morphological and metabolic changes to survive and progress from the gut to the salivary glands, where they will be waiting to be injected into the vertebrate host. The design of effective transmission-blocking strategies requires a thorough understanding of all the mechanisms that drive the development of gametocytes, gametes, sexual reproduction, and subsequent differentiation within the mosquito. The drastic changes in Plasmodium falciparum shape and function throughout its life cycle rely on the tight regulation of stage-specific gene expression.
  • 390
  • 01 Sep 2023
Topic Review
Utility of Retinal Organoids
The eye is one of the most important sensory organs in humans, providing us with a valuable remote sense, vision. A wealth of information enters the visual system through the eyes, creating complex images with shapes, colors, and textures. Despite the progress of modern medicine in the last decades, millions of people diagnosed with retinal dystrophies (RDs), such as retinitis pigmentosa (RP), or age-related diseases, such as age-related macular degeneration (AMD), are suffering from severe visual impairment or even legal blindness. On one hand, the reprogramming of somatic cells into induced pluripotent stem cells (iPSCs) and the progress of three-dimensional (3D) retinal organoids (ROs) technology provide a great opportunity to study, understand, and even treat retinal diseases. On the other hand, research advances in the field of electronic retinal prosthesis using inorganic photovoltaic polymers and the emergence of organic semiconductors represent an encouraging therapeutical strategy to restore vision to patients at the late onset of the disease.
  • 389
  • 18 Mar 2022
Topic Review
Ureteral Neuroendocrine Neoplasms
Primary ureteral neuroendocrine neoplasms (NENs) are rare. Small-cell neuroendocrine cancer (NEC) of the ureter is usually observed in elderly patients, and around 15 cases have been observed in females so far.
  • 389
  • 14 Jul 2022
Topic Review
Nutrition as Personalized Medicine against SARS-CoV-2 Infections
Coronavirus disease 2019 (COVID-19) is a respiratory disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). It is acknowledged that vulnerable people can suffer from mortal complications of COVID-19. Therefore, strengthening the immune system particularly in the most fragile people could help to protect them from infection. First, general nutritional status and food consumption patterns of everyone affect the effectiveness of each immune system. The effects of nutrition could impact the level of intestinal and genital microbiota, the adaptive immune system, and the innate immune system. Indeed, immune system cells and mediators, which are crucial to inflammatory reaction, are in the structures of fats, carbohydrates, and proteins and are activated through vitamins (vit) and minerals. Therefore, the association of malnutrition and infection could damage the immune response, reducing the immune cells and amplifying inflammatory mediators. Both amount and type of dietary fat impact on cytokine biology, that consequently assumes a crucial role in inflammatory disease. 
  • 389
  • 26 Aug 2022
Topic Review
Ethanol on Melanoma Initiation and Progression
Malignant melanoma is an aggressive cancer of the skin and the leading cause of death from skin cancer. One major risk factor linked to melanoma development is exposure to UV radiation. Recent studies have demonstrated that alcohol consumption is positively linked with an increased risk of cancers, including melanoma.
  • 389
  • 25 Oct 2022
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