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Topic Review
Chronic Rhinosinusitis and Alzheimer’s Disease
Among millions of sufferers of chronic rhinosinusitis (CRS), the challenge is not only constantly coping with CRS-related symptoms, such as congested nose, sinus pain, and headaches, but also various complications, such as attention difficulties and possible depression. These complications suggest that neural activity in the central nervous system may be altered in those patients, leading to unexpected conditions, such as neurodegeneration in elderly patients. 
  • 938
  • 26 Oct 2021
Topic Review
Epilepsy in Mitochondrial Diseases
Mitochondrial diseases are a heterogeneous group of diseases resulting from energy deficit and reduced adenosine triphosphate (ATP) production due to impaired oxidative phosphorylation. The manifestation of mitochondrial disease is usually multi-organ. Epilepsy is one of the most common manifestations of diseases resulting from mitochondrial dysfunction, especially in children.
  • 938
  • 28 Sep 2021
Topic Review
Therapeutic Approaches to Bacterial Infections
The quick spread of infectious diseases and their unpredictable consequences, in terms of human lives and economic losses, will require a change in our strategy, both at the clinical and the research level. Ultimately, we should be ready to fight against infectious diseases affecting a huge number of people in different parts of the world. This new scenario will require rapid, inexpensive diagnostic systems, applicable anywhere in the world and, preferably, without the need for specialized personnel. Also, treatments for these diseases must be versatile, easily scalable, cheap, and easy to apply. All this will only be possible with the joint support of governments, which will have to make the requirements for the approval of new therapies more flexible. Meanwhile, the pharmaceutical sector must commit to prioritizing products of global interest over the most profitable ones. Extreme circumstances demand a vehement response, and any profit losses may well pay dividends going forward.
  • 938
  • 05 Jan 2021
Topic Review
Management of Obstructive Sleep Apnea with Comorbidities
Obstructive sleep apnea (OSA) is a common disease that is often under-diagnosed and under-treated in all ages. Personalized medicine in OSA should focus on the management of patients’ comorbidities. Comorbidities of OSA are more common in adult or elderly patients than children. These include chronic respiratory diseases, cardiovascular diseases, and endocrinological or neurological disorders. The optimal management of OSA, using a personalized approach, should target comorbidities which may improve patient outcomes.
  • 937
  • 21 Dec 2022
Topic Review
Myotonia Congenita
Myotonia congenita (MC) is a rare disorder characterized by stiffness and weakness of the limb and trunk muscles. Mutations in the SCN4A gene encoding the alpha-subunit of the voltage-gated sodium channel Nav1.4 have been reported to be responsible for sodium channel myotonia (SCM). The Nav1.4 channel is expressed in skeletal muscles, and its related channelopathies affect skeletal muscle excitability, which can manifest as SCM, paramyotonia, and periodic paralysis. In this study, the missense mutation p.V445M was identified in two individual families with MC. To determine the functional consequences of having a mutated Nav1.4 channel, whole-cell patch-clamp recording of transfected Chinese hamster ovary cells was performed. Evaluation of the transient Na+ current found that a hyperpolarizing shift occurs at both the activation and inactivation curves with an increase of the window currents in the mutant channels. The Nav1.4 channel’s co-expression with the Navβ4 peptide can generate resurgent Na+ currents at repolarization following a depolarization. The magnitude of the resurgent currents is higher in the mutant than in the wild-type (WT) channel. Although the decay kinetics are comparable between the mutant and WT channels, the time to the peak of resurgent Na+ currents in the mutant channel is significantly protracted compared with that in the WT channel. These findings suggest that the p.V445M mutation in the Nav1.4 channel results in an increase of both sustained and resurgent Na+ currents, which may contribute to hyperexcitability with repetitive firing and is likely to facilitate recurrent myotonia in SCM patients.
  • 937
  • 29 Oct 2020
Topic Review
Refugee Children
Nearly half of all refugees are children, and almost one in three children living outside their country of birth is a refugee. These numbers encompass children whose refugee status has been formally confirmed, as well as children in refugee-like situations. In addition to facing the direct threat of violence resulting from conflict, forcibly displaced children also face various health risks, including: disease outbreaks and long-term psychological trauma, inadequate access to water and sanitation, nutritious food, and regular vaccination schedules. Refugee children, particularly those without documentation and those who travel alone, are also vulnerable to abuse and exploitation. Although many communities around the world have welcomed them, forcibly displaced children and their families often face discrimination, poverty, and social marginalization in their home, transit, and destination countries. Language barriers and legal barriers in transit and destination countries often bar refugee children and their families from accessing education, healthcare, social protection, and other services. Many countries of destination also lack intercultural supports and policies for social integration. Such threats to safety and well-being are amplified for refugee children with disabilities.
  • 937
  • 24 Oct 2022
Topic Review
P53
While viewed as the “guardian of the genome”, the importance of the tumor suppressor p53 protein has increasingly gained ever more recognition in modulating additional modes of action related to cell death. Slowly but surely, its importance has evolved from a mutated genetic locus heavily implicated in a wide array of cancer types to modulating lysosomal-mediated cell death either directly or indirectly through the transcriptional regulation of the key signal transduction pathway intermediates involved in this. Taken with its ability to directly modulate mitochondrial outer-membrane permeabilization (and cell death) collectively highlights the complex role that this protein undertakes at the molecular level
  • 937
  • 07 Dec 2020
Topic Review
Autophagy in Pancreatic Cancer
Pancreatic cancer is known to have the lowest survival outcomes among all major cancers, and unfortunately, this has only been marginally improved over last four decades. The innate characteristics of pancreatic cancer include an aggressive and fast-growing nature from powerful driver mutations, a highly defensive tumor microenvironment and the upregulation of advantageous survival pathways such as autophagy. Autophagy involves targeted degradation of proteins and organelles to provide a secondary source of cellular supplies to maintain cell growth.
  • 937
  • 29 Jul 2022
Topic Review
Riboswitches
Riboswitches reside in the 5'- untranslated region of RNA and regulate genes involved in the homeostasis of molecules or Ions they bind to. Since their discovery at the beginning of this century, some of the riboswitches have been regarded as potential antibacterial targets due to their role in the regulation of the homeostasis of the essential metabolites. The pharmacological potential of such riboswitches is being explored u various approaches which include fragment screening, high-throughput screening and rational ligand design guided by X-ray crystallography.
  • 937
  • 24 Feb 2021
Topic Review
Natural Products from Actinomycetes of Marine Organisms
The actinomycetes have proven to be a rich source of bioactive secondary metabolites and play a critical role in the development of pharmaceutical researches. With interactions of host organisms and having special ecological status, the actinomycetes associated with marine animals, marine plants, macroalgae, cyanobacteria, and lichens have more potential to produce active metabolites acting as chemical defenses to protect the host from predators as well as microbial infection. This entry focuses on 536 secondary metabolites (SMs) from actinomycetes associated with these marine organisms covering the literature to mid-2021, which will highlight the taxonomic diversity of actinomycetes and the structural classes, biological activities of SMs. Among all the actinomycetes listed, members of Streptomyces (68%), Micromonospora (6%), and Nocardiopsis (3%) are dominant producers of secondary metabolites. Additionally, alkaloids (37%), polyketides (33%), and peptides (15%) comprise the largest proportion of natural products with mostly antimicrobial activity and cytotoxicity. Furthermore, the data analysis and clinical information of SMs have been summarized in this article, suggesting that some of these actinomycetes with multiple host organisms deserve more attention to their special ecological status and genetic factors.
  • 937
  • 22 Nov 2021
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