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Topic Review
MDM2-Based Proteolysis-Targeting Chimeras (PROTACs)
Proteolysis-targeting chimeras (PROTACs) are molecules that selectively degrade a protein of interest (POI). The incorporation of ligands that recruit mouse double minute 2 (MDM2) into PROTACs, forming the so-called MDM2-based PROTACs, has shown promise in cancer treatment due to its dual mechanism of action: a PROTAC that recruits MDM2 prevents its binding to p53, resulting not only in the degradation of POI but also in the increase of intracellular levels of the p53 suppressor, with the activation of a whole set of biological processes, such as cell cycle arrest or apoptosis. In addition, these PROTACs, in certain cases, allow for the degradation of the target, with nanomolar potency, in a rapid and sustained manner over time, with less susceptibility to the development of resistance and tolerance, without causing changes in protein expression, and with selectivity to the target, including the respective isoforms or mutations, and to the cell type, overcoming some limitations associated with the use of inhibitors for the same therapeutic target.
  • 707
  • 15 Oct 2022
Topic Review
Western Diet, Insulin/IGF-I Signaling Pathway and Metabolic Syndrome
The metabolic syndrome is a cluster of overlapping conditions resulting in an increased incidence of type 2 diabetes, cardiovascular disease, and cancer. In the last few decades, prevalence of the metabolic syndrome in the Western world has reached epidemic proportions and this is likely due to alterations in diet and the environment as well as decreased physical activity. The Western diet and lifestyle (Westernization) plays an important etiological role in the pathogenesis of the metabolic syndrome  by exerting negative effects on activity of the insulin–insulin-like growth factor-I (insulin–IGF-I) system. Interventions that normalize/reduce activity of the insulin–IGF-I system may play a key role in the prevention and treatment of the metabolic syndrome. For successful prevention, limitation, and treatment of the metabolic syndrome, the focus should be primarily on changing our diets and lifestyle in accordance with our genetic make-up, formed in adaptation to Paleolithic diets and lifestyles during a period of several million years of human evolution.
  • 706
  • 03 Mar 2023
Topic Review
The (Poly)Pharmacology of Cannabidiol
Cannabidiol (CBD), the major nonpsychoactive Cannabis constituent, has been proposed for the treatment of a wide panel of neurological and neuropsychiatric disorders, including anxiety, schizophrenia, epilepsy and drug addiction due to the ability of its versatile scaffold to interact with diverse molecular targets that are not restricted to the endocannabinoid system. 
  • 706
  • 25 May 2021
Topic Review
Nanomaterials Aiming to Tackle Antibiotic-Resistant Bacteria
The most important current issue related to human health is bacterial resistance against antibiotics. Prolonged treatment using antibiotics is required in multidrug-resistant conditions, along with debridement of tissue, but in a small number of cases, the high costs of healthcare and low patient compliance prevent this treatment from succeeding. The identical features of nanomaterials make them unique candidates and boost the efficacy against multi-drug-resistant bacterial infection. Nanomaterials execute different bactericidal actions, and therefore bacteria face difficulty against therapeutics due to nanomaterial morphology such as size, shape, and surface chemistry. Nanomaterials can penetrate the bacterial membrane with unique drug cargo. Therefore, nanomaterials may be helpful for treatment by improving the therapeutic efficacy through their interaction with the bacterial cell system.
  • 706
  • 30 Mar 2022
Topic Review
Skin Pigmentation
Human skin pigmentation and melanin synthesis are incredibly variable, and are impacted by genetics, UV exposure, and some drugs. Patients’ physical appearance, psychological health, and social functioning are all impacted by a sizable number of skin conditions that cause pigmentary abnormalities. Hyperpigmentation, where pigment appears to overflow, and hypopigmentation, where pigment is reduced, are the two major classifications of skin pigmentation. Albinism, melasma, vitiligo, Addison’s disease, and post-inflammatory hyperpigmentation, which can be brought on by eczema, acne vulgaris, and drug interactions, are the most common skin pigmentation disorders in clinical practice. Anti-inflammatory medications, antioxidants, and medications that inhibit tyrosinase, which prevents the production of melanin, are all possible treatments for pigmentation problems. Skin pigmentation can be treated orally and topically with medications, herbal remedies, and cosmetic products, but a doctor should always be consulted before beginning any new medicine or treatment plan. 
  • 706
  • 25 Jun 2023
Topic Review Peer Reviewed
Anxiety, Depression, and Other Emotional Disorders during the COVID-19 Pandemic: A Narrative Review of the Risk Factors and Risk Groups
The COVID-19 pandemic has affected many aspects of our lives, including mental health. Identifying risk factors and risk groups associated with anxiety, depression, and other emotional disorders for reasons related to the COVID-19 pandemic is highly relevant. This narrative review aims to summarize the evidence to date on risk factors for emotional disorders during the COVID-19 pandemic in order to identify the risk groups of people in need of early psychiatric and psychological assistance, point out the controversial data on the influence of risk factors on emotional disorders in COVID-19, and finally offer recommendations for alleviating symptoms of anxiety, depression, and other emotional disorders in such people. According to the current literature, being under the age of 40, being female, having contact with a COVID-infected person, and watching the news about COVID-19 for more than 3 h a day all increase the likelihood of anxiety, depression, and sleep disturbances. Healthcare workers, particularly nurses, working in the COVID-19 hot zone suffer more from sleep disorders, anxiety, and depression. It is also noted that people with a previous psychiatric history, in addition to increased risks of anxiety and depression, have an increased risk of relapse during the COVID-19 pandemic. The same is true for people who have had episodes of substance abuse in the past. Aside from socioeconomic factors, the mental wellbeing of those who have had COVID-19 is also impacted by biological factors (using anti-COVID-19 drugs, COVID-19-associated immunothrombosis and venous thromboembolism, interferon-gamma-related cytokine storm, etc.), resulting in a wide range of acute and long-term cognitive disorders. During the restricted resource time, the aforementioned risk groups should be prioritized for prevention, early identification, and proper treatment of potential emotional disorders. The risk factors that were found in this narrative review, as well as how they interact and change over time, will help understand why some studies of at-risk groups do not agree with each other, justify new preventive measures, and strengthen existing programs to keep people’s mental health in check during this pandemic and other emergencies.
  • 706
  • 10 Mar 2023
Topic Review
Primary cilia and cancer
Primacy cilia are antenna-like structures present in many vertebrate cells. These organelles detect extracellular cues, transduce signals into the cell, and play an essential role in ensuring correct cell proliferation, migration, and differentiation in a spatiotemporal manner. Not surprisingly, dysregulation of primary cilia can cause various diseases, including cancer. The structure and function of primary cilia are dynamically regulated through many proteins and various posttranslational mechanisms of these proteins, including phosphorylation, acetylation, and ubiquitination. Targeting these signaling that regulates the assembly and disassembly of primary cilia may be a promising approach for cancer treatment.
  • 706
  • 27 Aug 2020
Topic Review
Myocardial Injury Related to SARS-CoV-2 Pneumonia
The diagnosis of SARS-CoV-2 pneumonia is expected to worsen, and mortality will be higher when combined with myocardial injury (MI). The combination of novel coronavirus infections in patients with MI can cause confusion in diagnosis and assessment, with each condition exacerbating the other, and increasing the complexity and difficulty of treatment.
  • 707
  • 08 Oct 2022
Topic Review
Artificial Intelligence in Alzheimer’s Disease
Alzheimer’s disease (AD) represents most of the dementia cases and stands as the most common neurodegenerative disease. A shift from a curative to a preventive approach is imminent, and we are moving towards the application of personalized medicine, whereas we can shape the best clinical intervention for each patient at a given point. This new step in medicine requires the most recent tools and the analysis of huge amounts of data where the application of artificial intelligence (AI) plays a critical part in the depiction of disease-patient dynamics, critical to reach early/optimal diagnosis, monitoring and intervention. Predictive models and algorithms are the key elements in this innovative field. 
  • 705
  • 02 Mar 2022
Topic Review
Endoscopy Lifetime Systems Architecture
Systems engineering captures the desires and needs of the customer to conceptualize a system from the overall goal down to the small details prior to any physical development. While many systems projects tend to be large and complicated (i.e., cloud-based infrastructure, long-term space travel shuttles, missile defense systems), systems engineering can also be applied to smaller, complex systems. The system of interest is the endoscope, a standard biomedical screening device used in laparoscopic surgery, screening of upper and lower gastrointestinal tracts, and inspection of the upper airway.
  • 706
  • 25 Oct 2022
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